{"info":{"_postman_id":"a6cf9b5a-6eb9-49f6-99e1-488f2e3ef170","name":"LOTUS™ SHELL AND TUBE HEAT EXCHANGERS CALCULATION Copy","description":"

\n\n

API Documentation

This api presents methods for calculating heat exchangers. The methods described below allow you to make a heat balance, determine the flow rate of the medium according to the heat balance, determine the required heat exchange surface, calculate the cost of manufacturing and materials. Also presented are methods for unloading the results and checking the status of the calculation. Detailed descriptions of each method are given below.

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1501325.0,\r\n \"Temperature\": 450,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 7.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 900000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0.001,\r\n \"constant_p_specific_heat\": 4000,\r\n \"density\": 1000,\r\n \"thermal_conductivity\": 0.1,\r\n \"surface_tension\": 35\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1.1e-05,\r\n \"constant_p_specific_heat\": 4100,\r\n \"density\": 4.5,\r\n \"thermal_conductivity\": 0.18\r\n }\r\n }\r\n },\r\n {\r\n \"FLOW\": {\r\n \"Components\": [],\r\n \"HL_Comps\": 0,\r\n \"HL_MoleFr\": 0,\r\n \"Heat Flow\": 0,\r\n \"Heavy Liquid\": 15,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": 0,\r\n \"LL_MoleFr\": 0,\r\n \"Light Liquid\": 5,\r\n \"Mass Flow\": 23.472,\r\n \"Pressure\": 1501325.0,\r\n \"Temperature\": 500,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 3.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 1000000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0.0015,\r\n \"constant_p_specific_heat\": 3900,\r\n \"density\": 950,\r\n \"thermal_conductivity\": 0.09,\r\n \"surface_tension\": 30\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0.002,\r\n \"constant_p_specific_heat\": 3500,\r\n \"density\": 800,\r\n \"thermal_conductivity\": 0.05,\r\n \"surface_tension\": 20\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1e-05,\r\n \"constant_p_specific_heat\": 4150,\r\n \"density\": 4,\r\n \"thermal_conductivity\": 0.2\r\n }\r\n }\r\n }\r\n ]\r\n }\r\n}","options":{"raw":{"language":"json"}}},"url":"https://23.api3.lotus-uems.ru/sthe/api/v2.0/task_create"},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"Server","value":"openresty","enabled":true},{"key":"Date","value":"Thu, 08 Aug 2024 07:39:20 GMT","enabled":true},{"key":"Content-Type","value":"application/json","enabled":true},{"key":"Content-Length","value":"59","enabled":true},{"key":"Connection","value":"keep-alive","enabled":true},{"key":"X-Served-By","value":"23.api3.lotus-uems.ru","enabled":true}],"cookie":[],"responseTime":null,"body":"{\n \"uuid\": \"947f2b08-fcb3-46b1-8884-46edce601e69\",\n \"rowid\": 129\n}"},{"id":"b1843f86-eb1f-443c-a3fc-92faf8b379a3","name":"Validatin error (points)","originalRequest":{"method":"POST","header":[{"key":"Authorization","value":"Bearer 12345","type":"text"},{"key":"Content-Type","value":"application/json","type":"text"}],"body":{"mode":"raw","raw":"{\r\n \"method\": \"heat_balance\",\r\n \"data\": {\r\n \"type\": \"points\",\r\n \"mode\": \"regular\",\r\n \"UserInput\": {\r\n \"cold\": {\r\n \"flow_name\": \"Dried gas\",\r\n \"t_in\": -1102,\r\n \"t_out\": 250,\r\n \"P_ab\": 2001.325,\r\n \"G\": 84500,\r\n \"components\": [],\r\n \"property_package\": null,\r\n \"fraction_type\": \"mass\",\r\n \"P_drop\": 200,\r\n \"Number_points\": 50,\r\n \"distillation\": []\r\n },\r\n \"hot\": {\r\n \"flow_name\": \"50% ethylene glycol solution\",\r\n \"t_in\": 472,\r\n \"t_out\": 329,\r\n \"P_ab\": 1501.325,\r\n \"G\": null,\r\n \"components\": [],\r\n \"property_package\": null,\r\n \"fraction_type\": \"mass\",\r\n \"P_drop\": 50,\r\n \"Number_points\": 50,\r\n \"distillation\": []\r\n }\r\n },\r\n \"HBArrCOLD\": [\r\n {\r\n \"FLOW\": {\r\n \"Components\": [],\r\n \"HL_Comps\": 0,\r\n \"HL_MoleFr\": 0,\r\n \"Heat Flow\": 0,\r\n \"Heavy Liquid\": 40,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": 0,\r\n \"LL_MoleFr\": 0,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 23.472,\r\n \"Pressure\": 2001325.0,\r\n \"Temperature\": 90,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 23.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 100000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1.4e-05,\r\n \"constant_p_specific_heat\": 4031,\r\n \"density\": 6.481,\r\n \"thermal_conductivity\": 0.1407\r\n }\r\n }\r\n },\r\n {\r\n \"FLOW\": {\r\n \"Components\": [],\r\n \"HL_Comps\": 0,\r\n \"HL_MoleFr\": 0,\r\n \"Heat Flow\": 0,\r\n \"Heavy Liquid\": 0,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": 0,\r\n \"LL_MoleFr\": 0,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 23.472,\r\n \"Pressure\": 2001325.0,\r\n \"Temperature\": 120,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 23.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 200000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1.3e-05,\r\n \"constant_p_specific_heat\": 4050,\r\n \"density\": 5,\r\n \"thermal_conductivity\": 0.16\r\n }\r\n }\r\n },\r\n {\r\n \"FLOW\": {\r\n \"Components\": [],\r\n \"HL_Comps\": 0,\r\n \"HL_MoleFr\": 0,\r\n \"Heat Flow\": 0,\r\n \"Heavy Liquid\": 0,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": 0,\r\n \"LL_MoleFr\": 0,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 23.472,\r\n \"Pressure\": 2001325.0,\r\n \"Temperature\": 160,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 23.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 500000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1.1e-05,\r\n \"constant_p_specific_heat\": 4100,\r\n \"density\": 4.5,\r\n \"thermal_conductivity\": 0.18\r\n }\r\n }\r\n },\r\n {\r\n \"FLOW\": {\r\n \"Components\": [],\r\n \"HL_Comps\": 0,\r\n \"HL_MoleFr\": 0,\r\n \"Heat Flow\": 0,\r\n \"Heavy Liquid\": 0,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": 0,\r\n \"LL_MoleFr\": 0,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 23.472,\r\n \"Pressure\": 2001325.0,\r\n \"Temperature\": 280,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 23.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 1000000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1e-05,\r\n \"constant_p_specific_heat\": 4150,\r\n \"density\": 4,\r\n \"thermal_conductivity\": 0.2\r\n }\r\n }\r\n }\r\n ],\r\n \"HBArrHOT\": [\r\n {\r\n \"FLOW\": {\r\n \"Components\": [],\r\n \"HL_Comps\": 0,\r\n \"HL_MoleFr\": 0,\r\n \"Heat Flow\": 0,\r\n \"Heavy Liquid\": 20,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": 0,\r\n \"LL_MoleFr\": 0,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 23.472,\r\n \"Pressure\": 1501325.0,\r\n \"Temperature\": 300,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 23.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 150000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1.4e-05,\r\n \"constant_p_specific_heat\": 4031,\r\n \"density\": 6.481,\r\n \"thermal_conductivity\": 0.1407\r\n }\r\n }\r\n },\r\n {\r\n \"FLOW\": {\r\n \"Components\": [],\r\n \"HL_Comps\": 0,\r\n \"HL_MoleFr\": 0,\r\n \"Heat Flow\": 0,\r\n \"Heavy Liquid\": 10,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": 0,\r\n \"LL_MoleFr\": 0,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 23.472,\r\n \"Pressure\": 1501325.0,\r\n \"Temperature\": 370,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 13.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 750000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0.001,\r\n \"constant_p_specific_heat\": 4000,\r\n \"density\": 1000,\r\n \"thermal_conductivity\": 0.1,\r\n \"surface_tension\": 35\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1.1e-05,\r\n \"constant_p_specific_heat\": 4100,\r\n \"density\": 4.5,\r\n \"thermal_conductivity\": 0.18\r\n }\r\n }\r\n },\r\n {\r\n \"FLOW\": {\r\n \"Components\": [],\r\n \"HL_Comps\": 0,\r\n \"HL_MoleFr\": 0,\r\n \"Heat Flow\": 0,\r\n \"Heavy Liquid\": 16,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": 0,\r\n \"LL_MoleFr\": 0,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 23.472,\r\n \"Pressure\": 1501325.0,\r\n \"Temperature\": 450,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 7.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 900000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0.001,\r\n \"constant_p_specific_heat\": 4000,\r\n \"density\": 1000,\r\n \"thermal_conductivity\": 0.1,\r\n \"surface_tension\": 35\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0,\r\n \"constant_p_specific_heat\": 0,\r\n \"density\": 0,\r\n \"thermal_conductivity\": 0,\r\n \"surface_tension\": 0\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1.1e-05,\r\n \"constant_p_specific_heat\": 4100,\r\n \"density\": 4.5,\r\n \"thermal_conductivity\": 0.18\r\n }\r\n }\r\n },\r\n {\r\n \"FLOW\": {\r\n \"Components\": [],\r\n \"HL_Comps\": 0,\r\n \"HL_MoleFr\": 0,\r\n \"Heat Flow\": 0,\r\n \"Heavy Liquid\": 15,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": 0,\r\n \"LL_MoleFr\": 0,\r\n \"Light Liquid\": 5,\r\n \"Mass Flow\": 23.472,\r\n \"Pressure\": 1501325.0,\r\n \"Temperature\": 500,\r\n \"V_Comps\": [],\r\n \"V_MoleFr\": [],\r\n \"Vapour\": 3.472\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": 1000000,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0.0015,\r\n \"constant_p_specific_heat\": 3900,\r\n \"density\": 950,\r\n \"thermal_conductivity\": 0.09,\r\n \"surface_tension\": 30\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": 0.002,\r\n \"constant_p_specific_heat\": 3500,\r\n \"density\": 800,\r\n \"thermal_conductivity\": 0.05,\r\n \"surface_tension\": 20\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": 1e-05,\r\n \"constant_p_specific_heat\": 4150,\r\n \"density\": 4,\r\n \"thermal_conductivity\": 0.2\r\n }\r\n }\r\n }\r\n ]\r\n }\r\n}","options":{"raw":{"language":"json"}}},"url":"https://23.api3.lotus-uems.ru/sthe/api/v2.0/task_create"},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"Server","value":"openresty","enabled":true},{"key":"Date","value":"Thu, 08 Aug 2024 07:40:10 GMT","enabled":true},{"key":"Content-Type","value":"application/json","enabled":true},{"key":"Content-Length","value":"104","enabled":true},{"key":"Connection","value":"keep-alive","enabled":true},{"key":"X-Served-By","value":"23.api3.lotus-uems.ru","enabled":true}],"cookie":[],"responseTime":null,"body":"{\n \"UserInput\": {\n \"cold/t_in\": {\n \"value\": -1102,\n \"error\": \"The temperature in °C cannot be less than -273.15\"\n }\n }\n}"}],"_postman_id":"168608a2-1554-43d6-a2ce-a7128ba0eb4f"}],"id":"5a1551f2-25e1-4eec-84f2-cb472ef1de77","description":"

Request Body Structure

{\n  \"method\": \"heat_balance\",\n  \"data\": {\n    \"type\": str,\n    \"mode\": str,\n    \"UserInput\": {\n      \"cold\": {\n        \"flow_name\": str,\n        \"t_in\": float| null,\n        \"t_out\": float| null,\n        \"P_abs\": float,\n        \"P_drop\": float,\n        \"G\": float| null,\n        \"property_package\": str,\n        \"fraction_type\": str,\n        \"components\": [],\n        \"distillation\": []\n      },\n      \"hot\": {\n        \"flow_name\": \"string\",\n        \"t_in\": float| null,\n        \"t_out\": float| null,\n        \"P_abs\": float,\n        \"P_drop\": float,\n        \"G\": float| null,\n        \"fraction_type\": \"mass\",\n        \"property_package\": null\n        \"components\": [...],\n        \"distillation\": [...]\n      }\n    },\n    \"HBArrCOLD\": [...],\n    \"HBArrHOT\": [...]\n  }\n}\n\n

General Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`method`	string	Must be \"heat_balance\"	✅ Yes
`type`	string	Type of calculation module. \"hss\" - generate properties of both by composition, \"points\" - use properties by points for both environments. \"mix\" - properties of one environment are taken by points and the other is generated by composition	✅ Yes
`language`	string	The response language for functions and reports. Currently supported: \"en\" (English)	✅ Yes
measuring_system	string	The measurement system in which the data is entered. Available options: \"SI\" (International System of Units)	✅ Yes
`mode`	string	Type of calculation module. For the balance “hss” - no value is specified, for the balance “points” - the value “regular” is specified, for the balance “mix” - if the properties are set on points for the hot side - the value ‘hotside’ and the dictionary “HBArrHOT” is filled in the properties. If the properties are set on the cold side - “coldside” and the dictionary “HBArrCOLD” is filled in the properties	✅ Yes

UserInput

⚠️ Requirement: One of these parameters must be null:
t_in[\"cold\"], t_out[\"cold\"], G[\"cold\"],
t_in[\"hot\"], t_out[\"hot\"], G[\"hot\"].

Cold Stream Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`flow_name`	string	Name of the cold stream	-
`t_in`	float/ null	Inlet temperature (°C). Must be ≥ -273.15	✅ Yes, but can take the value null
`t_out`	float/ null	Outlet temperature (°C). Must be > t_in	✅ Yes, but can take the value null
`P_abs`	float	Inlet pressure (absolute, MPa). Must be > 0	✅ Yes
`P_drop`	float	Pressure drop (kPa). Inlet pressure - Pressure drop > 0	✅ Yes
`G`	number / null	Mass flow rate (kg/s). Must be > 0	✅ Yes, but can take the value null
`fraction_type`	string	Type of concentration. \"mass\" - mass concentration; \"molar\" - molar concentration	✅ Yes
`property_package`	string	Property package for calculations. \"prsv\" - organic compounds; \"pengrob\" - organic compounds (Peng-Robinson); \"nrlt\" - inorganic compounds; \"if97pkg\" - wa
ter and steam; \"glycolpkg\" - glycol-containing compounds	✅ Yes
`components`	array	Array of component composition	✅ Yes, if used mode 'hss' or 'mix ' (cold or hot in 'mix' mode)
`distillation`	array	Array of fractional composition	✅ Yes, if used petroleum distillation

Hot Stream Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`flow_name`	string	Name of the hot stream	-
`t_in`	float/ null	Inlet temperature (°C). Must be > t_out	✅ Yes, but can take the value null
`t_out`	float/ null	Outlet temperature (°C). Must be > cold stream t_in	✅ Yes, but can take the value null
`P_abs`	float	Inlet pressure (absolute, MPa). Must be > 0	✅ Yes
`P_drop`	float	Pressure drop (kPa). Inlet pressure - Pressure drop > 0	✅ Yes
`G`	float/ null	Mass flow rate (kg/s). Must be > 0	✅ Yes, but can take the value null
`fraction_type`	string	Type of concentration. \"mass\" - mass concentration; \"molar\" - molar concentration	✅ Yes
`property_package`	string	Property package for calculations	\"prsv\" - organic compounds; \"pengrob\" - organic compounds (Peng-Robinson); \"nrlt\" - inorganic compounds; \"if97pkg\" - water and steam; \"glycolpkg\" - glycol-containing compounds
`components`	array	Array of component composition	✅ Yes, if used mode 'hss' or 'mix ' (cold or hot in 'mix' mode)
`distillation`	array	Array of fractional composition	✅ Yes, if used petroleum distillation

Component Object

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Parameter	Type	Description	Required
`name`	string	Name of the component. Component name from the Aspen Hysys list (e.g. “Nitrogen / N2 / N2”)	✅ Yes
`fraction`	float	Fraction of the component. Fraction of the specified component of type float	✅ Yes

Distillation Object

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Parameter	Type	Description	Required
`temperature`	float	Temperature point for distillation (°C). Temperature at which the amount of vapor phase is known	✅ Yes
`fraction`	float	Vapor phase fraction at this temperature. Mass fraction of vapor must be specified	✅ Yes

HBArrCOLD

An array of objects representing the properties of the cold flow at different points. Each object in the array has the following structure:

{\n  \"FLOW\": {\n    \"Components\": [],\n    \"HL_Comps\": float,\n    \"HL_MoleFr\": float,\n    \"Heat Flow\": float,\n    \"Heavy Liquid\": float,\n    \"Inerts\": float,\n    \"LL_Comps\": float,\n    \"LL_MoleFr\": float,\n    \"Light Liquid\": float,\n    \"Mass Flow\": float,\n    \"Pressure\": float,\n    \"Temperature\": float,\n    \"V_Comps\": [],\n    \"V_MoleFr\": [],\n    \"Vapour\": float\n  },\n  \"PROPERTIES\": {\n    \"Enthalpy\": float,\n    \"Heavy Liquid\": {\n      \"absolute_viscosity\": float,\n      \"constant_p_specific_heat\": float,\n      \"density\": float,\n      \"thermal_conductivity\": float,\n      \"surface_tension\": float\n    },\n    \"Inerts\": {\n      \"absolute_viscosity\": float,\n      \"constant_p_specific_heat\": float,\n      \"density\": float,\n      \"thermal_conductivity\": float\n    },\n    \"Light Liquid\": {\n      \"absolute_viscosity\": float,\n      \"constant_p_specific_heat\": float,\n      \"density\": float,\n      \"thermal_conductivity\": float,\n      \"surface_tension\": float\n    },\n    \"Vapour\": {\n      \"absolute_viscosity\": float,\n      \"constant_p_specific_heat\": float,\n      \"density\": float,\n      \"thermal_conductivity\": float\n    }\n  }\n}\n\n

HBArrHOT

An array of objects representing the properties of the hot flow at different points. The structure of each object is identical to those in HBArrCOLD.

Field Descriptions for FLOW and PROPERTIES

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`FLOW.Heavy Liquid`	float	Mass flow of high-boiling liquid. kg/s	✅ Yes
`FLOW.Inerts`	float	Mass flow of inerts liquid. kg/s	✅ Yes, if flow haven't inerts used '0'
`FLOW.Light Liquid`	float	Mass flow of low-boiling liquid. kg/s	✅ Yes, if flow haven't low-boiling liquid used '0'
`FLOW.Mass Flow`	float	Total mass flow. kg/s	✅ Yes
`FLOW.Pressure`	float	Absolute pressure. Pa	✅ Yes
`FLOW.Temperature`	float	Point temperature. °C	✅ Yes
`FLOW.Vapour`	float	Mass flow of vapour. kg/s	✅ Yes, if flow haven't vapour used '0'
`PROPERTIES.Enthalpy`	float	Enthalpy. J/kg	✅ Yes, if procces have change of phase. Default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.absolute_viscosity`	float	Dynamic viscosity. mPa·s	✅ Yes, default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.constant_p_specific_heat`	float	Isobaric heat capacity. J/kg·°C	✅ Yes, default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.density`	float	Density. kg/m³	✅ Yes, default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.thermal_conductivity`	float	Thermal conductivity. W/m·°C	✅ Yes, default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.surface_tension`	float	Surface tension. dyne/cm	✅ Yes, only for boiling procces. Default value 0

Successful Response Example

{  \n\"uuid\": \"7d363e9d-582b-4096-bfa8-b1d64ea7a488\",  \n\"rowid\": 2020  \n}\n\n

Response Fields

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`uuid`	`string`	Unique identifier (UUID v4 format). Used when sending a request to technical support. Sent together with \"rowid\"	✅ Yes
`rowid`	`integer`	Numeric ID of the record. Required to obtain results and calculation status	✅ Yes

","_postman_id":"5a1551f2-25e1-4eec-84f2-cb472ef1de77"},{"name":"VolumeMassConvertion","item":[{"name":"volume_mass_convertion","id":"ac3d1fd6-8239-4197-be89-a3800f5ba288","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"POST","header":[{"key":"Authorization","value":"Bearer 12345","type":"text"},{"key":"Content-Type","value":"application/json","type":"text"}],"body":{"mode":"raw","raw":"{\r\n \"method\": \"flow_conversion\",\r\n \"language\": \"en\",\r\n \"measuring_system\": \"SI\",\r\n \"data\": {\r\n \"V\": 2500,\r\n \"Vmode\": \"normal\",\r\n \"UserInput\": {\r\n \"t_in\": 20,\r\n \"t_out\": 45,\r\n \"P_abs\": 5101.325,\r\n \"P_drop\": 50,\r\n \"property_package\": \"prsv\",\r\n \"fraction_type\": \"mass\",\r\n \"components\": [\r\n {\r\n \"name\": \"Nitrogen / N2 / N2\",\r\n \"fraction\": 0.002\r\n },\r\n {\r\n \"name\": \"Methane / C1 / CH4\",\r\n \"fraction\": 0.881\r\n },\r\n {\r\n \"name\": \"Ethane / C2 / C2H6\",\r\n \"fraction\": 0.117\r\n }\r\n ],\r\n \"distillation\": [\r\n {\"temperature\": 100, \"fraction\": 0.005},\r\n {\"temperature\": 110, \"fraction\": 0.012},\r\n {\"temperature\": 120, \"fraction\": 0.014},\r\n {\"temperature\": 130, \"fraction\": 0.025},\r\n {\"temperature\": 140, \"fraction\": 0.054}\r\n ]\r\n }\r\n }\r\n}","options":{"raw":{"language":"json"}}},"url":"https://23.api3.lotus-uems.ru/sthe/api/v2.0/task_create","urlObject":{"protocol":"https","path":["sthe","api","v2.0","task_create"],"host":["23","api3","lotus-uems","ru"],"query":[],"variable":[]}},"response":[],"_postman_id":"ac3d1fd6-8239-4197-be89-a3800f5ba288"}],"id":"c6a7bb0e-df40-4861-96c4-5054604d5c2d","description":"

Flow Conversion API Documentation

Request Body

The request body should be a JSON object with the following structure:

{\n  \"method\": \"flow_conversion\",\n  \"data\": {\n    \"V\": float,\n    \"Vmode\": string,\n    \"UserInput\": {\n      \"t_in\": float,\n      \"t_out\": float,\n      \"P_abs\": float,\n      \"P_drop\": float,\n      \"property_package\": string,\n      \"fraction_type\": string,\n      \"components\": [\n        {\n          \"name\": string,\n          \"fraction\": float\n        }\n      ],\n      \"distillation\": [\n        {\n          \"temperature\": float,\n          \"fraction\": float\n        }\n      ]\n    }\n  }\n}\n\n

Data Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`method`	string	Must be set to \"flow_conversion\"	✅ Yes
`language`	string	The response language for functions and reports. Currently supported: \"en\" (English)	✅ Yes
`measuring_system`	string	The measurement system in which the data is entered. Available options: \"SI\" (International System of Units)	✅ Yes
`V`	float	Volume flow (m3/s)	✅ Yes
`Vmode`	string	Volume mode. \"normal\" - at t=0°C, p=1 atm. (abs.) \"standart\" - at t=20°C, p=1 atm. (abs.); \"current\" - at t and p of inlet.	✅ Yes
`t_in`	float	Inlet temperature (°C). Must be ≥ -273.15	✅ Yes
`t_out`	float	Outlet temperature (°C). Must be ≥ -273.15	✅ Yes
`P_abs`	float	Inlet pressure (absolute, MPa). Must be > 0	✅ Yes
`P_drop`	float	Pressure drop (kPa). Inlet pressure - Pressure drop > 0	✅ Yes
`property_package`	string	Property package for calculations. \"prsv\" - organic compounds; \"pengrob\" - organic compounds (Peng-Robinson); \"nrlt\" - inorganic compounds; \"if97pkg\" - water and steam; \"glycolpkg\" - glycol-containing compounds	✅ Yes
`fraction_type`	string	Type of concentration. \"mass\" - mass concentration; \"molar\" - molar concentration	✅ Yes
`components`	array	Array of component composition	✅ Yes
`distillation`	array	Array of fractional composition	✅ Yes, if used petroleum distillation

Component Object

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`name`	string	Name of the component. Component name from the Aspen Hysys list (e.g. “Nitrogen / N2 / N2”)	✅ Yes
`fraction`	float	Fraction of the component. Fraction of the specified component of type float	✅ Yes

Distillation Object

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`temperature`	float	Temperature point for distillation (°C). Temperature at which the amount of vapor phase is known	✅ Yes
`fraction`	float	Vapor phase fraction at this temperature. Mass fraction of vapor must be specified	✅ Yes

Example Request

{\n  \"method\": \"flow_conversion\",\n  \"data\": {\n    \"V\": 2500,\n    \"Vmode\": \"normal\",\n    \"UserInput\": {\n      \"t_in\": 20,\n      \"t_out\": 45,\n      \"P_abs\": 5.101325,\n      \"P_drop\": 50,\n      \"property_package\": \"prsv\",\n      \"fraction_type\": \"mass\",\n      \"components\": [\n        {\n          \"name\": \"Nitrogen / N2 / N2\",\n          \"fraction\": 0.002\n        },\n        {\n          \"name\": \"Methane / C1 / CH4\",\n          \"fraction\": 0.881\n        },\n        {\n          \"name\": \"Ethane / C2 / C2H6\",\n          \"fraction\": 0.117\n        }\n      ],\n      \"distillation\": [\n        {\"temperature\": 100, \"fraction\": 0.005},\n        {\"temperature\": 110, \"fraction\": 0.012},\n        {\"temperature\": 120, \"fraction\": 0.014},\n        {\"temperature\": 130, \"fraction\": 0.025},\n        {\"temperature\": 140, \"fraction\": 0.054}\n      ]\n    }\n  }\n}\n\n

Response Fields

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`uuid`	`string`	Unique identifier (UUID v4 format). Used when sending a request to technical support. Sent together with \"rowid\"	✅ Yes
`rowid`	`integer`	Numeric ID of the record. Required to obtain results and calculation status	✅ Yes

","_postman_id":"c6a7bb0e-df40-4861-96c4-5054604d5c2d"}],"id":"8be6c49d-0edf-429b-b947-c2c2e1918b61","description":"

Includes general functions for calculating heat processes.

HeatBalance allows you to calculate the heat balance for 5 any parameters (the sixth must be left blank). The calculation is performed in 3 ways. The first option - calculation by medium composition, it is necessary to specify all components of flows, their mass or mole fractions, or specify distillation for oil products. The second method allows to calculate the heat balance by known points of the medium with properties. Interpolation is carried out between the known points and properties are determined at the required parameters. The more points are specified the more accurate the calculation will be. The third method is mixed, when the bottom of the medium is determined by composition, and the second by points.
\n
VolumeMassConvertion this method will convert the volume flow rate in standard, normal or working cubic metres per second to mass flow rate in kg per second.
\n

\n","_postman_id":"8be6c49d-0edf-429b-b947-c2c2e1918b61"},{"name":"Solutions","item":[{"name":"ListOfConstructions","item":[{"name":"list_constructions_full","id":"68e3901d-59f2-4627-b250-237b124a8c7b","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"POST","header":[{"key":"Authorization","value":"Bearer 12345","type":"text"}],"body":{"mode":"raw","raw":"{\r\n \"method\": \"list_constructions\",\r\n \"language\": \"en\",\r\n \"measuring_system\": \"SI\",\r\n \"data\": {\r\n \"hb_rowid\": null,\r\n \"cases\": [],\r\n \"pattern_character\": {\r\n \"segm\": 30,\r\n \"screw\": 60,\r\n \"doubelsegm\": 45\r\n },\r\n \"Project\": {\r\n \"GENERAL\": {\r\n \"customer\": \"Name\",\r\n \"name_apparatus\": \"name_apparatus\",\r\n \"process_unit\": \"\",\r\n \"position\": \"\",\r\n \"appointment_apparatus\": \"water\",\r\n \"order\": 25606067,\r\n \"revision\": \" \",\r\n \"planned_date\": \"None\",\r\n \"stage\": \"Реализация проекта\"\r\n },\r\n \"FILES\": {\r\n \"Project\": [],\r\n \"HeatBalance\": [],\r\n \"CurrentDesign\": [],\r\n \"Other\": []\r\n }\r\n },\r\n \"HBData\": [\r\n \"Water1\",\r\n \"Water2\",\r\n [\r\n [\r\n [\r\n \"H2O / Water / H2O\"\r\n ],\r\n [],\r\n \"if97pkg\",\r\n [\r\n 1\r\n ],\r\n [],\r\n [\r\n 60,\r\n 75\r\n ],\r\n 1101.325,\r\n null,\r\n \"mass\",\r\n 40,\r\n 50\r\n ],\r\n [\r\n [\r\n \"H2O / Water / H2O\"\r\n ],\r\n [],\r\n \"if97pkg\",\r\n [\r\n 1\r\n ],\r\n [],\r\n [\r\n 140,\r\n 80\r\n ],\r\n 451.325,\r\n 4000,\r\n \"mass\",\r\n 50,\r\n 50\r\n ]\r\n ],\r\n {\r\n \"COLD\": {\r\n \"IN\": {\r\n \"FLOW\": {\r\n \"Components\": [\r\n \"H2O\"\r\n ],\r\n \"HL_Comps\": [\r\n \"H2O\"\r\n ],\r\n \"HL_MoleFr\": [\r\n 1\r\n ],\r\n \"Heat Flow\": -70717134.19,\r\n \"Heavy Liquid\": 4.5,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": null,\r\n \"LL_MoleFr\": null,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 4.5,\r\n \"Pressure\": 1101325,\r\n \"Temperature\": 60,\r\n \"V_Comps\": null,\r\n \"V_MoleFr\": null,\r\n \"Vapour\": 0\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": -15718236.0211894,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0.0004662830635588822,\r\n \"constant_p_specific_heat\": 4179.989104579076,\r\n \"density\": 983.6406696649576,\r\n \"surface_tension\": 66.23826252330558,\r\n \"thermal_conductivity\": 0.6515386552360124\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"surface_tension\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n }\r\n }\r\n },\r\n \"OUT\": {\r\n \"FLOW\": {\r\n \"Components\": [\r\n \"H2O\"\r\n ],\r\n \"HL_Comps\": [\r\n \"H2O\"\r\n ],\r\n \"HL_MoleFr\": [\r\n 1\r\n ],\r\n \"Heat Flow\": -70434879.19,\r\n \"Heavy Liquid\": 4.5,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": null,\r\n \"LL_MoleFr\": null,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 4.5,\r\n \"Pressure\": 1061325,\r\n \"Temperature\": 75,\r\n \"V_Comps\": null,\r\n \"V_MoleFr\": null,\r\n \"Vapour\": 0\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": -15655499.44672387,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0.0003776781116486409,\r\n \"constant_p_specific_heat\": 4188.897914980081,\r\n \"density\": 975.276349210292,\r\n \"surface_tension\": 63.58301950965922,\r\n \"thermal_conductivity\": 0.6640879471270806\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"surface_tension\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n }\r\n }\r\n },\r\n \"Q\": 282255\r\n },\r\n \"HOT\": {\r\n \"IN\": {\r\n \"FLOW\": {\r\n \"Components\": [\r\n \"H2O\"\r\n ],\r\n \"HL_Comps\": [\r\n \"H2O\"\r\n ],\r\n \"HL_MoleFr\": [\r\n 1\r\n ],\r\n \"Heat Flow\": -17090042.40101313,\r\n \"Heavy Liquid\": 1.111111111111111,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": null,\r\n \"LL_MoleFr\": null,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 1.111111111111111,\r\n \"Pressure\": 451325,\r\n \"Temperature\": 140,\r\n \"V_Comps\": null,\r\n \"V_MoleFr\": null,\r\n \"Vapour\": 0\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": -15381038.16091182,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0.0001966654191595099,\r\n \"constant_p_specific_heat\": 4285.223154220718,\r\n \"density\": 926.1756883455311,\r\n \"surface_tension\": 50.85586867542803,\r\n \"thermal_conductivity\": 0.6825817658536948\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"surface_tension\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n }\r\n }\r\n },\r\n \"OUT\": {\r\n \"FLOW\": {\r\n \"Components\": [\r\n \"H2O\"\r\n ],\r\n \"HL_Comps\": [\r\n \"H2O\"\r\n ],\r\n \"HL_MoleFr\": [\r\n 1\r\n ],\r\n \"Heat Flow\": -17372297.40400523,\r\n \"Heavy Liquid\": 1.111111111111111,\r\n \"Inerts\": 0,\r\n \"LL_Comps\": null,\r\n \"LL_MoleFr\": null,\r\n \"Light Liquid\": 0,\r\n \"Mass Flow\": 1.111111111111111,\r\n \"Pressure\": 401325,\r\n \"Temperature\": 80,\r\n \"V_Comps\": null,\r\n \"V_MoleFr\": null,\r\n \"Vapour\": 0\r\n },\r\n \"PROPERTIES\": {\r\n \"Enthalpy\": -15635067.66360471,\r\n \"Heavy Liquid\": {\r\n \"absolute_viscosity\": 0.0003541385636292626,\r\n \"constant_p_specific_heat\": 4194.306168783574,\r\n \"density\": 971.9316172448399,\r\n \"surface_tension\": 62.67285496652644,\r\n \"thermal_conductivity\": 0.6671705778146074\r\n },\r\n \"Inerts\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Light Liquid\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"surface_tension\": null,\r\n \"thermal_conductivity\": null\r\n },\r\n \"Vapour\": {\r\n \"absolute_viscosity\": null,\r\n \"constant_p_specific_heat\": null,\r\n \"density\": null,\r\n \"thermal_conductivity\": null\r\n }\r\n }\r\n },\r\n \"Q\": 282255.002992101\r\n }\r\n },\r\n 42.59872123894485\r\n ],\r\n \"UserInput\": {\r\n \"cold\": {\r\n \"flow_name\": \"Water1\",\r\n \"t_in\": 60,\r\n 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\"compensator\": false,\r\n \"loads_fitting_in\": [\r\n 1,\r\n 1,\r\n 1,\r\n 1,\r\n 1,\r\n 1,\r\n 1,\r\n 1,\r\n 1,\r\n 1\r\n ],\r\n \"loads_fitting_out\": [\r\n 1,\r\n 1,\r\n 1,\r\n 1,\r\n 1,\r\n 1\r\n ],\r\n \"flow_movement\": true,\r\n \"environmental_hazard_class\": 1,\r\n \"flammability\": true,\r\n \"danger_of_explosion\": true,\r\n \"between_supports\": \"\",\r\n \"n_supports\": \"\",\r\n \"R_pipe_min\": 30,\r\n \"R_pipe_max\": 471,\r\n \"user_fixed_support_poz\": \"\",\r\n \"user_mobile_support_poz\": \"\",\r\n \"user_fixed_support_poz_y\": \"\",\r\n \"user_mobile_support_poz_y\": \"\",\r\n \"T_k_medium\": 23.9\r\n }\r\n },\r\n \"UserAnswers\": {\r\n \"size_limits\": [\r\n 9,\r\n null,\r\n null\r\n ],\r\n \"out_tube_diam\": 0.02,\r\n \"tube_thickness\": 0.002,\r\n \"fouling_thermal_resistance\": {\r\n \"COLD\": 0.000176,\r\n \"HOT\": 0.000176\r\n },\r\n \"mechanical_clean\": {\r\n \"shell\": false,\r\n \"tube\": false\r\n },\r\n \"clean\": {\r\n \"shell\": \"2\",\r\n \"tube\": \"3\"\r\n },\r\n \"max_pressure_drop\": {\r\n \"COLD\": 50000,\r\n \"HOT\": 50000\r\n },\r\n \"start_temp\": {\r\n \"COLD\": null,\r\n \"HOT\": null\r\n },\r\n \"side_selection\": [\r\n \"HOT\",\r\n \"COLD\"\r\n ],\r\n \"tube_material\": \"Carbon Steel\",\r\n \"cap_material\": \"Carbon Steel\",\r\n \"grids_material\": \"Carbon Steel\",\r\n \"partions_material\": \"Carbon Steel\",\r\n \"head_material\": null,\r\n \"compensator_material\": null,\r\n \"shell_material\": \"Carbon Steel\",\r\n \"orientation\": \"horizontal\",\r\n \"maxD\": 3.2,\r\n \"Fz\": 20,\r\n \"BufflesType\": \"-\",\r\n \"camera_type\": \"B\",\r\n \"shell_type\": \"F\",\r\n \"cap_type\": \"M\",\r\n \"dismountable\": false,\r\n \"fix_L\": false,\r\n \"fix_D\": false,\r\n \"custom_options\": {\r\n \"k_dolki\": false,\r\n \"tubes_step\": null,\r\n \"l_min\": null,\r\n \"TubePasses_list\": \"1, 2, 4, 6, 8, 10, 12\",\r\n \"Cases_list\": \"1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12\",\r\n \"alfa_shell_user\": null,\r\n \"alfa_tube_user\": null,\r\n \"dP_gap\": 5,\r\n \"LMTD\": null,\r\n \"VDS\": null\r\n }\r\n },\r\n \"PropsArray\": {}\r\n }\r\n}","options":{"raw":{"language":"json"}}},"url":"https://23.api3.lotus-uems.ru/sthe/api/v2.0/task_create","urlObject":{"protocol":"https","path":["sthe","api","v2.0","task_create"],"host":["23","api3","lotus-uems","ru"],"query":[],"variable":[]}},"response":[],"_postman_id":"9a20c234-5bb1-4b80-af3d-33e80fdf06e0"}],"id":"faef1c25-1c9f-4154-9cef-b707067210b8","description":"

Overview

This API provides access to the LOTOUS heat exchanger design calculation system. It allows users to input detailed specifications for a heat exchanger and receive comprehensive design calculations and recommendations.

Request Structure

The request body should be a JSON object with the following main sections:

{\n  \"method\": \"mesh_calculation\",\n  \"data\": {\n    \"hb_rowid\": null,\n    \"cases\": [],\n    \"pattern_character\": {\"segm\": \"30\", \"screw\": \"60\"},\n    \"Project\": { ... },\n    \"HBData\": [ ... ],\n    \"UserInput\": { ... },\n    \"PropsArray\": [ ... ],\n    \"UserAnswers\": { ... },\n    \"Design_input_dict\": { ... },\n    \"Design_user_input\": { ... }\n  }\n}\n\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`method`	string	Must be set to \"mesh_calculation\"	✅ Yes
`language`	string	The response language for functions and reports. Currently supported: \"en\" (English)	✅ Yes
`measuring_system`	string	The measurement system in which the data is entered. Available options: \"SI\" (International System of Units)	✅ Yes

Let's break down each section in detail:

Simple keys:
“hb_rowid” - if the heat balance would have been calculated earlier in the program, you can use the heat balance task number to unload the data from the calculation. In this case the dictionaries “PropsArray”, “HBData”, “UserInput” are not specified.

1. Project

The Project object contains general information about the heat exchange equipment and associated files.

GENERAL

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Field	Type	Description
`customer`	string	Name of the final customer
`name_apparatus`	string	Name of the apparatus
`process_chain`	string	Name of the process chain
`position`	string	Technological position at the customer's production site
`appointment_apparatus`	string	General purpose of the device
`order`	integer	Order number
`revision`	string	Revision number
`planned_date`	string	null
`stage`	string	null

FILES

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Field	Type	Description
`Project`	array	List of project-related files
`HeatBalance`	array	List of heat balance files
`CurrentDesign`	array	List of current design files
`Other`	array	List of other relevant files

2. HBData

Request Body

The request body should be a JSON array with the following structure:

[\n  \"СОГ\",\n  \"ПНГ\",\n  [\n    [\n      [\"Helium / He / He\", \"n-Hexane / C6 / C6H14\", \"i-Pentane / i-C5 / C5H12\", ...],\n      [],\n      \"prsv\",\n      [1e-05, 3e-05, 0.00053, ...],\n      [],\n      [-45, 32.58],\n      551.325,\n      2019,\n      \"mole\",\n      15,\n      50\n    ],\n    [\n      [\"Helium / He / He\", \"Methanol / Methanol / CH4O\", \"n-Hexane / C6 / C6H14\", ...],\n      [],\n      \"prsv\",\n      [1e-05, 2e-05, 0.01005, ...],\n      [],\n      [39.58, 17.94],\n      566.325,\n      null,\n      \"mole\",\n      5,\n      50\n    ]\n  ]\n]\n\n

Cold Fluid and Hot Fluid Sub-arrays

Each sub-array contains the following elements:

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Index	Type	Description	Required
0	array	List of component names	✅ Yes
1	array	Temperature of distillation (°C)	✅ Yes
2	string	Property Generation Package	✅ Yes
3	array	Fraction of heat transfer fluid	✅ Yes
4	array	Fraction of distillation	✅ Yes
5	array	Temperature for fluid Inlet/Outlet (°C)	✅ Yes
6	number	Inlet absolute pressure (kPa)	✅ Yes
7	number or null	Mass flow rate for fluid (kg/hour)	✅ Yes
8	string	Fraction type (\"mass\" or \"mole\")	✅ Yes
9	number	Pressure drop in the unit for fluid (kPa)	✅ Yes
10	number	Number of points for temperature approximation	✅ Yes

Response PROPERTIES Structure

{\n  \"COLD\": {\n    \"IN\": {\n      \"FLOW\": {\n        // Flow data\n      },\n      \"PROPERTIES\": {\n        // Property data\n      }\n     },\n    \"OUT\": {\n      \"FLOW\": {\n        // Flow data\n      },\n      \"PROPERTIES\": {\n        // Property data\n    }\n  },\n  \"HOT\": {\n    // Similar structure to COLD\n  }\n}\n\n

COLD.IN.FLOW

Field	Type	Description	Required
Components	array	List of component names in the total flow	✅ Yes
HL_Comps	array or null	Component composition of high-boiling liquid
HL_MoleFr	array or null	Mole fraction of high-boiling liquid
Heat Flow	number	Heat flow in watts	✅ Yes
Heavy Liquid	number	Mass flow of high-boiling liquid in kg/s	✅ Yes
Inerts	number	Mass flow of inerts in kg/s
LL_Comps	array or null	Component composition of low-boiling liquid
LL_MoleFr	array or null	Mole fraction of low-boiling liquid
Light Liquid	number	Mass flow of low-boiling liquid in kg/s
Mass Flow	number	Total mass flow in kg/s	✅ Yes
Pressure	number	Absolute pressure in Pa	✅ Yes
Temperature	number	Point temperature in °C	✅ Yes
V_Comps	array	Component composition of vapor
V_MoleFr	array	Mole fraction of vapor phase
Vapour	number	Mass flow of vapor in kg/s

COLD.IN.PROPERTIES

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Field	Type	Description	Required
Enthalpy	number	Enthalpy in J/kg	✅ Yes, if procces have change of phase. Default value 0
Heavy Liquid	object	Properties of high-boiling liquid	✅ Yes
Inerts	object	Properties of inerts	✅ Yes, if flow haven't inerts used '0'
Light Liquid	object	Properties of low-boiling liquid	✅ Yes, if flow haven't low-boiling liquid used '0'
Vapour	object	Properties of vapor	✅ Yes, if flow haven't vapour used '0'

Property Objects (Heavy Liquid, Inerts, Light Liquid, Vapour)

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Field	Type	Description	Required
absolute_viscosity	number or null	Dynamic viscosity in mPa·s	✅ Yes, default value 0
constant_p_specific_heat	number or null	Isobaric heat capacity in J/kg·°C	✅ Yes, default value 0
density	number or null	Density in kg/m³	✅ Yes, default value 0
surface_tension	number or null	Surface tension in dyne/cm (not applicable for Inerts)	✅ Yes, only for boiling procces. Default value 0
thermal_conductivity	number or null	Thermal conductivity in W/m·°C	✅ Yes, default value 0

3. ### UserInput

⚠️ Requirement: One of these parameters must be null:
t_in[\"cold\"], t_out[\"cold\"], G[\"cold\"],
t_in[\"hot\"], t_out[\"hot\"], G[\"hot\"].

Cold Stream Parameters

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Field	Type	Description	Required
`flow_name`	string	Name of the cold stream	-
`t_in`	float/ null	Inlet temperature (°C). Must be ≥ -273.15	✅ Yes, but can take the value null
`t_out`	float/ null	Outlet temperature (°C). Must be > t_in	✅ Yes, but can take the value null
`P_abs`	float	Inlet pressure (absolute, MPa). Must be > 0	✅ Yes
`P_drop`	float	Pressure drop (kPa). Inlet pressure - Pressure drop > 0	✅ Yes
`G`	number / null	Mass flow rate (kg/s). Must be > 0	✅ Yes, but can take the value null
`fraction_type`	string	Type of concentration. \"mass\" - mass concentration; \"molar\" - molar concentration	✅ Yes
`property_package`	string	Property package for calculations. \"prsv\" - organic compounds; \"pengrob\" - organic compounds (Peng-Robinson); \"nrlt\" - inorganic compounds; \"if97pkg\" - water and steam; \"glycolpkg\" - glycol-containing compounds	✅ Yes
`components`	array	Array of component composition	✅ Yes, if used mode 'hss' or 'mix ' (cold or hot in 'mix' mode)
`distillation`	array	Array of fractional composition	✅ Yes, if used petroleum distillation

Hot Stream Parameters

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Field	Type	Description	Required
`flow_name`	string	Name of the hot stream	-
`t_in`	float/ null	Inlet temperature (°C). Must be > t_out	✅ Yes, but can take the value null
`t_out`	float/ null	Outlet temperature (°C). Must be > cold stream t_in	✅ Yes, but can take the value null
`P_abs`	float	Inlet pressure (absolute, MPa). Must be > 0	✅ Yes
`P_drop`	float	Pressure drop (kPa). Inlet pressure - Pressure drop > 0	✅ Yes
`G`	float/ null	Mass flow rate (kg/s). Must be > 0	✅ Yes, but can take the value null
`fraction_type`	string	Type of concentration. \"mass\" - mass concentration; \"molar\" - molar concentration	✅ Yes
`property_package`	string	Property package for calculations	\"prsv\" - organic compounds; \"pengrob\" - organic compounds (Peng-Robinson); \"nrlt\" - inorganic compounds; \"if97pkg\" - water and steam; \"glycolpkg\" - glycol-containing compounds
`components`	array	Array of component composition	✅ Yes, if used mode 'hss' or 'mix ' (cold or hot in 'mix' mode)
`distillation`	array	Array of fractional composition	✅ Yes, if used petroleum distillation

Component Object

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Field	Type	Description	Required
`name`	string	Name of the component. Component name from the Aspen Hysys list (e.g. “Nitrogen / N2 / N2”)	✅ Yes
`fraction`	float	Fraction of the component. Fraction of the specified component of type float	✅ Yes

Distillation Object

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`temperature`	float	Temperature point for distillation (°C). Temperature at which the amount of vapor phase is known	✅ Yes
`fraction`	float	Vapor phase fraction at this temperature. Mass fraction of vapor must be specified	✅ Yes

HBArrCOLD

An array of objects representing the properties of the cold flow at different points. Each object in the array has the following structure:

{\n  \"FLOW\": {\n    \"Components\": [],\n    \"HL_Comps\": float,\n    \"HL_MoleFr\": float,\n    \"Heat Flow\": float,\n    \"Heavy Liquid\": float,\n    \"Inerts\": float,\n    \"LL_Comps\": float,\n    \"LL_MoleFr\": float,\n    \"Light Liquid\": float,\n    \"Mass Flow\": float,\n    \"Pressure\": float,\n    \"Temperature\": float,\n    \"V_Comps\": [],\n    \"V_MoleFr\": [],\n    \"Vapour\": float\n  },\n  \"PROPERTIES\": {\n    \"Enthalpy\": float,\n    \"Heavy Liquid\": {\n      \"absolute_viscosity\": float,\n      \"constant_p_specific_heat\": float,\n      \"density\": float,\n      \"thermal_conductivity\": float,\n      \"surface_tension\": float\n    },\n    \"Inerts\": {\n      \"absolute_viscosity\": float,\n      \"constant_p_specific_heat\": float,\n      \"density\": float,\n      \"thermal_conductivity\": float\n    },\n    \"Light Liquid\": {\n      \"absolute_viscosity\": float,\n      \"constant_p_specific_heat\": float,\n      \"density\": float,\n      \"thermal_conductivity\": float,\n      \"surface_tension\": float\n    },\n    \"Vapour\": {\n      \"absolute_viscosity\": float,\n      \"constant_p_specific_heat\": float,\n      \"density\": float,\n      \"thermal_conductivity\": float\n    }\n  }\n}\n\n

HBArrHOT

An array of objects representing the properties of the hot flow at different points. The structure of each object is identical to those in HBArrCOLD.

Field Descriptions for FLOW and PROPERTIES

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Field	Type	Description	Required
`FLOW.Heavy Liquid`	float	Mass flow of high-boiling liquid. kg/s	✅ Yes
`FLOW.Inerts`	float	Mass flow of inerts liquid. kg/s	✅ Yes, if flow haven't inerts used '0'
`FLOW.Light Liquid`	float	Mass flow of low-boiling liquid. kg/s	✅ Yes, if flow haven't low-boiling liquid used '0'
`FLOW.Mass Flow`	float	Total mass flow. kg/s	✅ Yes
`FLOW.Pressure`	float	Absolute pressure. Pa	✅ Yes
`FLOW.Temperature`	float	Point temperature. °C	✅ Yes
`FLOW.Vapour`	float	Mass flow of vapour. kg/s	✅ Yes, if flow haven't vapour used '0'
`PROPERTIES.Enthalpy`	float	Enthalpy. J/kg	✅ Yes, if procces have change of phase. Default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.absolute_viscosity`	float	Dynamic viscosity. mPa·s	✅ Yes, default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.constant_p_specific_heat`	float	Isobaric heat capacity. J/kg·°C	✅ Yes, default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.density`	float	Density. kg/m³	✅ Yes, default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.thermal_conductivity`	float	Thermal conductivity. W/m·°C	✅ Yes, default value 0
`PROPERTIES.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*.surface_tension`	float	Surface tension. dyne/cm	✅ Yes, only for boiling procces. Default value 0

4. PropsArray

As an example, the following is presented one of 500 property poits. LOTUS™ uses 500 point for sufficient calculation accuracy.

Response Format

The response is a nested JSON structure containing detailed information about the flow and its properties.

Root Structure

[\n  [\n    [\n      {\n        \"FLOW\": {...},\n        \"PROPERTIES\": {...}\n      }\n    ]\n  ]\n]\n\n

FLOW Object

The FLOW object contains information about the flow components, phases, and physical properties.

Field	Type	Description	Required
Components	array of strings	List of chemical components in the flow	✅ Yes
HL_Comps	array or null	Component composition of high-boiling liquid	✅ Yes
HL_MoleFr	array or null	Mole fraction of high-boiling liquid	✅ Yes
Heat Flow	float	Heat flow in watts (W)	✅ Yes
Heavy Liquid	float	Mass flow of high-boiling liquid in kg/s
Inerts	float	Mass flow of inerts in kg/s
LL_Comps	array or null	Component composition of low-boiling liquid
LL_MoleFr	array or null	Mole fraction of low-boiling liquid
Light Liquid	float	Mass flow of low-boiling liquid in kg/s
Mass Flow	float	Total mass flow of all phases in kg/s
Pressure	float	Absolute pressure in Pascals (Pa)
Temperature	float	Temperature of flow in °C
V_Comps	array of strings	Component composition of vapor
V_MoleFr	array of numbers	Mole fraction of vapor phase
Vapour	float	Mass flow of vapor in kg/s	✅ Yes

PROPERTIES Object

The PROPERTIES object contains physical properties of the flow components.

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
Enthalpy	float	Enthalpy in J/kg	✅ Yes, if procces have change of phase. Default value 0
Heavy Liquid	object	Properties of high-boiling liquid	✅ Yes
Inerts	object	Properties of inerts	✅ Yes, if flow haven't inerts used '0'
Light Liquid	object	Properties of low-boiling liquid	✅ Yes, if flow haven't low-boiling liquid used '0'
Vapour	object	Properties of vapor	✅ Yes, if flow haven't vapour used '0'

Subobjects (Heavy Liquid, Inerts, Light Liquid, Vapour)

Each subobject may contain the following properties:

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Field	Type	Description	Required
absolute_viscosity	float	Dynamic viscosity in mPa∙s	✅ Yes, default value 0
constant_p_specific_heat	float	Isobaric heat capacity in J/kg∙°C	✅ Yes, default value 0
density	float	Density in kg/m³	✅ Yes, default value 0
surface_tension	float	Surface tension in dyne/cm (not applicable for Inerts)	✅ Yes, only for boiling procces. Default value 0
thermal_conductivity	float	Thermal conductivity in W/m∙°C	✅ Yes, default value 0

5. UserAnswers

Request Body

The request body is a JSON object containing various parameters for configuring a heat exchanger.

Root Structure

{\n  \"size_limits\": [...],\n  \"out_tube_diam\": number,\n  \"tube_thickness\": number,\n  \"fouling_thermal_resistance\": {...},\n  \"mechanical_clean\": {...},\n  \"clean\": {...},\n  \"max_pressure_drop\": {...},\n  \"start_temp\": {...},\n  \"side_selection\": [...],\n  \"tube_material\": string,\n  \"cap_material\": string,\n  \"grids_material\": string,\n  \"partions_material\": string,\n  \"head_material\": string | null,\n  \"compensator_material\": string | null,\n  \"shell_material\": string,\n  \"orientation\": string,\n  \"maxD\": number,\n  \"Fz\": number,\n  \"BufflesType\": string,\n  \"camera_type\": string,\n  \"shell_type\": string,\n  \"cap_type\": string,\n  \"dismountable\": boolean,\n  \"fix_L\": boolean,\n  \"fix_D\": boolean,\n  \"custom_options\": {...}\n}\n\n

Field Descriptions

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
size_limits	array	Maximum lengths for heat exchanger sections. Is the maximum length of the straight section of pipes (m)	✅ Yes
out_tube_diam	float	Outer diameter of heat exchanger pipes (m)	✅ Yes
tube_thickness	float	Wall thickness of heat exchanger pipes (m)
fouling_thermal_resistance	object	Thermal resistance due to fouling (m²×°C/W) for COLD and HOT sides	✅ Yes, default value 0
mechanical_clean	object	Mechanical cleaning requirements for shell and tube	✅ Yes
clean	object	Type of cleaning required for shell and tube space (1: Not required, 2: Mechanical, 3: Chemical)	✅ Yes
max_pressure_drop	object	Maximum permissible pressure drop (Pa) for COLD and HOT sides
start_temp	object	Wall temperature at apparatus run (°C) for COLD and HOT sides	✅ Yes
side_selection	array	Location of heat transfer fluids (HOT or COLD for tube and shell)	✅ Yes
tube_material	string	Heat exchanger tube material	✅ Yes
cap_material	string	Material of distribution chamber and cap	✅ Yes
grids_material	string	Material of pipe grids
partions_material	string	Material of transverse partitions
head_material	string or null	Floating head material
compensator_material	string or null	Compensator material
shell_material	string	Heat exchanger shell material	✅ Yes
orientation	string	Orientation of the heat exchanger tubes	✅ Yes
maxD	number	Maximum permissible diameter of the apparatus shell (m)	✅ Yes
Fz	number	Heat exchange surface reserve (%)	✅ Yes
BufflesType	string	Type of shell space baffle ('segm', 'screw', or '-' for no baffle)	✅ Yes
camera_type	string	Type of input chamber according to TEMA standard	✅ Yes
shell_type	string	Type of shell according to TEMA standard	✅ Yes
cap_type	string	Type of cap according to TEMA standard	✅ Yes
dismountable	boolean	Whether the heat exchanger is dismountable	✅ Yes
fix_L	boolean	Whether the length is fixed	✅ Yes
fix_D	boolean	Whether the diameter is fixed	✅ Yes
custom_options	object	Expert parameters for additional configuration

custom_options Object

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description
k_dolki	boolean	Expert parameter
tubes_step	float or null	Spacing between pipes (m)
l_min	float or null	Minimum spacing between partitions (m)
TubePasses_list	string	Possible number of strokes in the pipe space
Cases_list	string	Possible number of cases
alfa_shell_user	float or null	Fixed heat transfer coefficient for shell fluid (W/m²×°C)
alfa_tube_user	float or null	Fixed heat transfer coefficient for tube fluid (W/m²×°C)
dP_gap	float	Permissible excess of available pressure losses (%)
LMTD	float or null	Temperature correction Z
VDS	float or null	Double vertical partition cut

6. ## Design_input_dict Parameters

GENERAL Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`customer`	string	Customer name
`name_apparatus`	string	Apparatus name
`position`	string	Apparatus position in manufactures
`appointment_apparatus`	string	Purpose of the apparatus
`tema`	string	Name type apparatus in TEMA standard	✅ Yes
`media_type`	string	Type of media according to specifications (LOTUS™)
`order`	string	Order Number
`revision`	string	Calculation revision number
`area`	float	Effective area of one enclosure, m²	✅ Yes
`diameter`	float	Diameter of the device, mm	✅ Yes
`heat_load`	float	Heat load, kW
`t_minimum`	float	Temperature minimum, °C	✅ Yes
`climatic`	object	Climatic conditions	✅ Yes
`performance_device`	string	Apparatus performance horizontal or vertical	✅ Yes

TUBE Parameters

Field	Type	Description	Required
`dn_in`	number	DN of inlet pipe, mm	✅ Yes
`dn_in_diffuser`	string	DN max diffuser of inlet branch pipe, mm
`dn_out`	number	DN of outlet spigot, mm	✅ Yes
`dn_out_diffuser`	string	DN max outlet spigot diffuser, mm
`dn_connecting`	string	DN of intermediate nozzle, mm
`dn_deflating`	string	DN of air vent, mm
`dn_drainage`	string	DN of drainage, mm
`p_calculation`	number	Calculation pressure, MPa (Absolute pressure)	✅ Yes
`p_vacuum`	string	Vacuum, kPa (Absolute pressure)
`pn`	number	Conditional pressure, MPa	✅ Yes
`p_in`	number	Inlet pressure, MPa (Absolute pressure)	✅ Yes
`hydraulic_friction`	number	Hydraulic resistance, kPa	✅ Yes
`t_in`	number	Inlet temperature, °C	✅ Yes
`t_out`	number	Outlet temperature, °C	✅ Yes
`t_calculation`	number	Calculation temperature, °C	✅ Yes
`name_medium`	string	Flow name	\"recycled water\"
`mass_consumption`	number	Flow rate of mass medium, kg/h	✅ Yes
`motion`	number	Number of strokes	✅ Yes
`corrosion`	number	Corrosion allowance, mm	✅ Yes

SHELL Parameters

Field	Type	Description	Required
`dn_in`	float	DN of inlet pipe, mm	✅ Yes
`dn_in_diffuser`	float	DN max diffuser of inlet branch pipe, mm
`dn_out`	float	DN of outlet spigot, mm	✅ Yes
`dn_out_diffuser`	string	DN max outlet spigot diffuser, mm
`dn_connecting`	string	DN of intermediate nozzle, mm
`dn_deflating`	string	DN of air vent, mm
`dn_drainage`	string	DN of drainage, mm
`p_calculation`	float	Calculation pressure, MPa (Absolute pressure)	✅ Yes
`p_vacuum`	string	Vacuum, kPa (Absolute pressure)
`pn`	float	Conditional pressure, MPa	✅ Yes
`p_in`	float	Inlet pressure, MPa (Absolute pressure)	✅ Yes
`hydraulic_friction`	float	Hydraulic resistance, kPa	✅ Yes
`t_in`	float	Inlet temperature, °C	✅ Yes
`t_out`	float	Outlet temperature, °C	✅ Yes
`t_calculation`	float	Calculation temperature, °C	✅ Yes
`name_medium`	string	Flow name
`mass_consumption`	float	Flow rate of mass medium, kg/h	✅ Yes
`motion`	integer	Number of strokes	✅ Yes
`corrosion`	float	Corrosion allowance, mm
`corrosion_compensator`	float	Corrosion allowance for compensator, mm
`n_pipe`	integer	Number of heat-exchange pipes, pcs	✅ Yes
`d_pipe`	float	Diameter of heat exchanger pipes, mm	✅ Yes
`s_pipe`	float	Wall thickness of the heat exchanger pipe, mm	✅ Yes
`l_pipe`	float	Pipe length, mm	✅ Yes
`pipe_pitch`	float	Pitch of heat exchanger pipes, mm	✅ Yes
`distance_between_rows`	float	Distance between rows (max), mm	✅ Yes

REFERENCE Parameters

TUBE Reference

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`steel`	array	Material of the heat exchanger distribution chamber	✅ Yes
`kit`	object	Fastening materials for flange connections	✅ Yes

kit Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`kit_fitting`	array	Material of fasteners for flange connections of fittings	✅ Yes
`kit_general`	array	Fastening material of the main flange connection	✅ Yes

SHELL Reference

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`steel`	array	Heat exchanger housing material	✅ Yes
`pipe`	array	Material of heat exchange pipes	✅ Yes
`tube_sheet`	array	Material of heat exchange grids	✅ Yes
`floating_head_cover`	array	Material of floating head	✅ Yes
`partition`	array	Material of partition	✅ Yes
`compensator`	array	Material of shell compensator	✅ Yes
`kit`	object	Fastening materials for flange connections	✅ Yes

kit Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`kit_fitting`	array	Material of fasteners for flange connections of fittings	✅ Yes
`kit_general`	array	Fastening material of the main flange connection	✅ Yes

7. Design_user_input Parameters

GENERAL Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`execution_tab_1`	integer	Execution of sketch table_1 (for visualization, default 1)
`execution_scheme_load`	integer	Execution of load scheme on sketch (for visualization, default 1)	✅ Yes
`reverse_cemera`	boolean	Change position of the distribution chamber	✅ Yes

TUBE Parameters

Field	Type	Description	Required
`corrosion_cracking`	boolean	Corrosion cracking	✅ Yes
`in_input_seal_surface`	string	Input flange sealing surface design	✅ Yes
`out_input_seal_surface`	string	Design of the sealing surface of the outlet flanges
`in_row`	string	Inlet flange order	✅ Yes
`out_row`	string	Outlet flange row	✅ Yes
`in_flange_angle`	float	Inlet flange angle
`out_flange_angle`	float	Rotation angle of the outlet fitting
`in_flange_position_z`	float	Displacement of the inlet fitting relative to the vertical axis
`out_flange_position_z`	float	Outlet fitting offset relative to the vertical axis
`instrumentation`	boolean	Availability of bosses on the instrumentation fittings	✅ Yes
`camera_partition`	array	Camera partition configuration	✅ Yes
`cap_partition`	array	Cap partition configuration	✅ Yes
`loads_fitting_in`	array	Loads on inlet fittings	✅ Yes
`loads_fitting_out`	array	Loads on outlet fittings	✅ Yes
`transition_camera`	boolean	Camera in the form of a conical shell if one stroke on a pipe	✅ Yes
`transition_cap`	boolean	Cap as a conical shell if one pipe stroke
`shell_cap`	boolean	Shell in cap	✅ Yes
`flow_movement`	boolean	Change the direction of media movement	✅ Yes
`environmental_hazard_class`	number	Environmental hazard class
`flammability`	boolean	Flammability of the medium	✅ Yes
`danger_of_explosion`	boolean	Explosion hazard of the environment	✅ Yes
`t_t_medium`	float	Average pipe temperature, °C	✅ Yes

SHELL Parameters

Field	Type	Description	Required
`corrosion_cracking`	boolean	Corrosion cracking	✅ Yes
`in_input_seal_surface`	string	Inlet flange sealing surface design	✅ Yes
`out_input_seal_surface`	string	Design of the sealing surface of the outlet flanges	✅ Yes
`in_row`	string	Inlet flange order	✅ Yes
`out_row`	string	Outlet flange row	✅ Yes
`in_flange_angle`	float	Inlet flange angle	✅ Yes
`out_flange_angle`	float	Inlet flange angle	✅ Yes
`in_flange_position_z`	float	Displacement of the inlet fitting relative to the vertical axis	✅ Yes
`out_flange_position_z`	float	Outlet fitting offset relative to the vertical axis	✅ Yes
`instrumentation`	boolean	Availability of bosses on the instrumentation fittings	✅ Yes
`longitudinal_partition`	array	Longitudinal partition configuration	✅ Yes
`anti_bypass_lane`	array	Anti-bypass lane configuration	✅ Yes
`cross_partition`	array	Cross partition configuration	✅ Yes
`compensator`	boolean	Need for compensator	✅ Yes
`loads_fitting_in`	array	Loads on inlet fittings	✅ Yes
`loads_fitting_out`	array	Loads on outlet fittings	✅ Yes
`flow_movement`	boolean	Change the direction of media movement	✅ Yes
`environmental_hazard_class`	number	Environmental hazard class	✅ Yes
`flammability`	boolean	Flammability of the medium	✅ Yes
`danger_of_explosion`	boolean	Explosion hazard of the environment	✅ Yes
`between_supports`	string	Distance between supports
`n_supports`	string	Number of supports
`r_pipe_min`	float	Minimum bending radius for U-pipes (from TO, if U-pipe)	✅ Yes, if U-pipe
`r_pipe_max`	float	Maximum bending radius for U-pipes (from TO, if U-pipe)	✅ Yes, if U-pipe
`user_fixed_support_poz`	string	Position of fixed supports (if adjustment is needed)

`user_mobile_support_poz`	string	Position of mobile supports (if adjustment is needed)
`user_fixed_support_poz_y`	string	Position of fixed supports along Y-axis (if adjustment is needed)
`user_mobile_support_poz_y`	string	Position of mobile supports along Y-axis (if adjustment is needed)
`t_k_medium`	float	Average pipe temperature, °C	✅ Yes

Response Fields

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`uuid`	`string`	Unique identifier (UUID v4 format). Used when sending a request to technical support. Sent together with \"rowid\"	✅ Yes
`rowid`	`integer`	Numeric ID of the record. Required to obtain results and calculation status	✅ Yes

","_postman_id":"faef1c25-1c9f-4154-9cef-b707067210b8"},{"name":"CalibrateConstruction","item":[{"name":"calibrate_construction","id":"ddef409c-fd6f-429d-a82a-b2fd9d558dcd","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"POST","header":[{"key":"Authorization","value":"Bearer LOTUS_6n2x0k1c6d1j0f2h1t4nq","type":"text"},{"key":"Content-Type","value":"application/json","type":"text"}],"body":{"mode":"raw","raw":"{\r\n \"method\": \"calibrate\",\r\n \"language\": \"ru\",\r\n \"measuring_system\": \"SI\",\r\n \"data\": {\r\n \"rowid\": 4101,\r\n \"different_balance_rowid\": 4100,\r\n \"project_id\": 0,\r\n \"shell_type\": null, \r\n \"tubes_number\": [155], \r\n \"tube_passes\": [2], \r\n \"tube_length\": 5000, \r\n \"tube_thickness\": 1 , \r\n \"tube_delta_coefficient\": [[]],\r\n \"preliminary_coefficient_k\": [], \r\n \"baffles_type\": \"segm\", \r\n \"pattern_character\": 30, \r\n \"D_specified\": [500], \r\n \"cold_fouling_R\": 0 , \r\n \"hot_fouling_R\": 0, \r\n \"max_shell_speed\": 2250, \r\n \"beam_splitting_type\": \"layers\", \r\n \"states_of_tubes\": null, \r\n \"first_shellpass_sectors\": null, \r\n \"cut_buffels\" : null, \r\n \"distance_between_baffels\": null, \r\n \"shellsector_length_multiplier\": 2,\r\n \"reports\" : {\r\n \"heat\": true,\r\n \"scetch\": false,\r\n \"bill_materials\": false,\r\n \"user_report_config\": {\r\n \"hp_reports_count\" : \"tmp\",\r\n \"hb_uid\" : \"2/1\",\r\n \"hconstruction_uid\" : \"1\",\r\n \"hc_version\" : 1,\r\n \"Hash\" : \"-\",\r\n \"UserLastName\" : \"Ivanov\"\r\n },\r\n \"3d_graph\" : {\r\n \"TubeTemps\": false,\r\n \"ShellTemps\": false,\r\n \"HeatLoad\": false,\r\n \"LMTD\": false,\r\n \"K\": false,\r\n \"TubeVelocity\": false,\r\n \"ShellVelocity\": false,\r\n \"TubeVapour\": false,\r\n \"ShellVapour\": false,\r\n \"TubeAlpha\": false,\r\n \"ShellAlpha\": false,\r\n \"Vibration\": false\r\n }\r\n }\r\n }\r\n}","options":{"raw":{"language":"json"}}},"url":"https://23.api3.lotus-uems.ru/sthe/api/v2.0/task_create","urlObject":{"protocol":"https","path":["sthe","api","v2.0","task_create"],"host":["23","api3","lotus-uems","ru"],"query":[],"variable":[]}},"response":[],"_postman_id":"ddef409c-fd6f-429d-a82a-b2fd9d558dcd"}],"id":"57fd1375-1a63-49e3-8d23-b73702259469","description":"

Heat Exchanger Calibration API Documentation

Overview

This request is used to calibrate the parameters of a heat exchanger based on the provided data. The request sends a JSON object containing various parameters that are used for the calculation and calibration of the heat exchanger.

Note: If you don't know which parameter or don't want to change it, set the key to null and the values from the mesh calculation will be used.

Request Structure

GENERAL Parameters

Field	Type	Description	Required
`method`	String	The method to be executed on the server.	✅ Yes
`language`	string	The response language for functions and reports. Currently supported: \"en\" (English)	✅ Yes
`measuring_system`	string	The measurement system in which the data is entered. Available options: \"SI\" (International System of Units)	✅ Yes
`data`	Object	Contains all the necessary data for calibration.	✅ Yes
`rowid`	Integer	Grid construction number.	✅ Yes
`different_balance_rowid`	Integer	Use a different heat balance by specifying the number of the other balance.
`project_id`	Integer	Variant number from the grid.
`shell_type`	String	Shell type according to the TEMA standard (e.g., E, F, H, etc.).	✅ Yes
`tubes_number`	Array of Integers	Minimum number of tubes in pass per shell.
`tube_passes`	Array of Integers	Number of tube passes per shell.
`tube_length`	Integer or Array	Tube length in mm. Can be a single value or an array per shell.
`tube_thickness`	Float	Tube wall thickness in mm.
`tube_delta_coefficient`	Array of Arrays	Actual temperature shift coefficient for tube space, obtained after grid calculation.
`preliminary_coefficient_k`	Array	Preliminary heat transfer coefficient per shell for calibration.
`baffles_type`	String	Baffle type (`segm` or `screw`).
`pattern_character`	Integer	Tube bundle layout angle in degrees.
`D_specified`	Array of Integers	Array of shell diameters.	✅ Yes
`states_of_tubes`	Array of Arrays	Tube bundle state (enabled/disabled) per shell.
`first_shellpass_sectors`	Array of Integers	Distance to the first baffle per shell in mm.
`shell_fouling_R`	Float	Thermal resistance on the shell side.
`tube_fouling_R`	Float	Thermal resistance on the tube side.
`cold_fouling_R`	Float	Thermal resistance on the cold side (alternative to `tube_fouling_R`).
`hot_fouling_R`	Float	Thermal resistance on the hot side (alternative to `shell_fouling_R`).
`max_shell_speed`	Float	Maximum flow speed in the shell.
`beam_splitting_type`	String	Variant of pipe layout for multiple pipe runs (`layers` or `quadrants`).
`cut_buffels`	Array of Arrays	Baffle cut percentage per shell.
`baffles_arr_specified`	Array of Arrays	Distance between baffles per shell. Set to `null` to use default values from the mesh calculation.
`distance_between_baffels`	Array	Distance between baffles per shell.
`shellsector_length_multiplier`	Float	Multiplier for shell sector length.

REPORTS Parameters

Field	Type	Description	Required
`reports`	Object	Container for all report generation settings.	✅ Yes
`reports.heat`	Boolean	Enable heat report.	✅ Yes
`reports.scetch`	Boolean	Enable sketch.	✅ Yes
`reports.bill_materials`	Boolean	Enable bill of materials.	✅ Yes
`reports.user_report_config`	Object	User-specific report configuration.
`reports.user_report_config.hp_reports_count`	String	Reports count placeholder.
`reports.user_report_config.hb_uid`	String	Heat balance unique identifier.
`reports.user_report_config.hconstruction_uid`	String	Construction unique identifier.
`reports.user_report_config.hc_version`	Integer	Version of the construction.
`reports.user_report_config.Hash`	String	Hash for report identification.
`reports.user_report_config.UserLastName`	String	Last name of the user generating the report.
`reports.3d_graph`	Object	3D graph visualization settings.
`reports.3d_graph.TubeTemps`	Boolean	Enable tube temperature distribution graph.
`reports.3d_graph.ShellTemps`	Boolean	Enable shell temperature distribution graph.
`reports.3d_graph.HeatLoad`	Boolean	Enable heat load distribution graph.
`reports.3d_graph.LMTD`	Boolean	Enable Log Mean Temperature Difference graph.
`reports.3d_graph.K`	Boolean	Enable heat transfer coefficient graph.
`reports.3d_graph.TubeVelocity`	Boolean	Enable tube-side velocity distribution graph.
`reports.3d_graph.ShellVelocity`	Boolean	Enable shell-side velocity distribution graph.
`reports.3d_graph.TubeVapour`	Boolean	Enable tube-side vapor fraction graph.
`reports.3d_graph.ShellVapour`	Boolean	Enable shell-side vapor fraction graph.
`reports.3d_graph.TubeAlpha`	Boolean	Enable tube-side heat transfer coefficient graph.
`reports.3d_graph.ShellAlpha`	Boolean	Enable shell-side heat transfer coefficient graph.
`reports.3d_graph.Vibration`	Boolean	Enable vibration analysis graph.

Response Fields

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`uuid`	`string`	Unique identifier (UUID v4 format). Used when sending a request to technical support. Sent together with `rowid`.	✅ Yes
`rowid`	`integer`	Numeric ID of the record. Required to obtain results and calculation status.	✅ Yes

","_postman_id":"57fd1375-1a63-49e3-8d23-b73702259469"}],"id":"08a23df5-efe8-48cc-ac27-f30df7cbf957","description":"

This section includes calculations of apparatus designs.

ListOfConstractions allows to get a set of solutions of heat exchangers according to given parameters. Calculation can be performed in 2 ways - by specifying the heat balance results manually or by specifying the number of the calculated heat balance from HeatBalance.
\n
CalibrateConstructions allows you to make changes to the calculation of a specific design and get a thermal report, sketch and bill of materials of a specific solution. If it is necessary to get only reports, specify empty values in the changes.
\n

\n","_postman_id":"08a23df5-efe8-48cc-ac27-f30df7cbf957"},{"name":"MassAndSketch","item":[{"name":"mass_sketch","id":"4cce5da8-c2a7-450a-b765-625dfc4cd670","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"POST","header":[{"key":"Authorization","value":"Bearer 12345","type":"text"}],"body":{"mode":"raw","raw":"{\r\n \"method\": \"mass_sketch\",\r\n \"language\": \"en\",\r\n \"measuring_system\": \"SI\",\r\n \"data\": {\r\n \"User_Name\": \"LOTUS\",\r\n \"reports\" : {\r\n \"scetch\": true,\r\n \"bill_materials\": false\r\n },\r\n \"Design_input_dict\": {\r\n \"GENERAL\": {\r\n \"customer\": \"Name\",\r\n \"name_apparatus\": \"HEAT EXCHANGER\",\r\n \"position\": \"-\",\r\n \"appointment_apparatus\": \"\",\r\n \"TEMA\": \"BFM\",\r\n \"media_typ\": \"WW\",\r\n \"order\": \"23088042\",\r\n \"revision\": \"4\",\r\n \"area\": 195.9969284,\r\n \"D\": 1000,\r\n \"heat_load\": 13627.32,\r\n \"T_minimum\": 10,\r\n \"performance_device\": \"horizontal\"\r\n },\r\n \"TUBE\": {\r\n \"DN_IN\": 250,\r\n \"DN_IN_diffuser\": \"\",\r\n \"DN_OUT\": 250,\r\n \"DN_OUT_diffuser\": \"\",\r\n \"DN_connecting\": \"\",\r\n \"DN_deflating\": \"\",\r\n \"DN_drainage\": \"\",\r\n \"P_calculation\": 1.7,\r\n \"P_vacuum\": \"\",\r\n \"PN\": 2.8,\r\n \"P_IN\": 0.6,\r\n \"hydraulic_friction\": 62.20867963077237,\r\n \"T_IN\": 69,\r\n \"T_OUT\": 110,\r\n \"T_medium\": 102.9135201079704, \r\n \"T_calculation\": 150,\r\n \"name_medium\": \"Water\",\r\n \"mass_consumption\": 284700,\r\n \"motion\": 6,\r\n \"corrosion\": 2\r\n },\r\n \"SHELL\": {\r\n \"DN_IN\": 250,\r\n \"DN_IN_diffuser\": \"\",\r\n \"DN_OUT\": 250,\r\n \"DN_OUT_diffuser\": \"\",\r\n \"DN_connecting\": \"\",\r\n \"DN_deflating\": \"\",\r\n \"DN_drainage\": \"\",\r\n \"P_calculation\": 2.9,\r\n \"P_vacuum\": \"\",\r\n \"PN\": 4.0,\r\n \"P_IN\": 2.54,\r\n \"hydraulic_friction\": 55.47896188084469,\r\n \"T_IN\": 146.8,\r\n \"T_OUT\": 84.24253447805899,\r\n \"T_medium\":12.60774713105906, \r\n \"T_calculation\": 190,\r\n \"name_medium\": \"Water\",\r\n \"mass_consumption\": 185100,\r\n \"motion\": 2,\r\n \"corrosion\": 2,\r\n \"corrosion_compensator\": 1,\r\n \"N_pipe\": 1714,\r\n \"D_pipe\": 16,\r\n \"S_pipe\": 1.0,\r\n \"L_pipe\": 2400,\r\n \"pipe_pitch\": 26,\r\n \"distance_between_rows\": 64\r\n },\r\n \"REFERENCE\": {\r\n \"TUBE\": {\r\n \"steel\": [\r\n \"3.5Ni steel\"\r\n ],\r\n \"kit\": {\r\n \"kit_fitting\": [\r\n \"Carbon Steel\",\r\n \"Carbon Steel\",\r\n \"Carbon Steel\"\r\n ],\r\n \"kit_general\": [\r\n \"Carbon Steel\",\r\n \"Carbon Steel\",\r\n \"Carbon Steel\"\r\n ]\r\n }\r\n },\r\n \"SHELL\": {\r\n \"steel\": [\r\n \"3.5Ni steel\"\r\n ],\r\n \"pipe\": [\r\n \"SS 316\"\r\n ],\r\n \"tube_sheet\": [\r\n \"Carbon Steel\"\r\n ],\r\n \"floating_head_cover\": [\r\n \"\"\r\n ],\r\n \"partition\": [\r\n \"Carbon Steel\"\r\n ],\r\n \"compensator\": [\r\n \"SS 316\"\r\n ],\r\n \"kit\": {\r\n \"kit_fitting\": [\r\n \"Carbon Steel\",\r\n \"Carbon Steel\",\r\n \"Carbon Steel\"\r\n ],\r\n \"kit_general\": [\r\n \"Carbon Steel\",\r\n \"Carbon Steel\",\r\n \"Carbon Steel\"\r\n ]\r\n }\r\n }\r\n }\r\n },\r\n\"Design_user_input\": {\r\n \"GENERAL\": {\r\n \"execution_tab_1\": 1,\r\n \"execution_scheme_load\": 1,\r\n \"reverse_cemera\": false\r\n },\r\n \"TUBE\": {\r\n \"corrosion_cracking\": false,\r\n \"IN_input_seal_surface\": \"E-F\",\r\n \"OUT_input_seal_surface\": \"E-F\",\r\n \"IN_row\": \"1\",\r\n \"OUT_row\": \"1\",\r\n \"IN_FlangeAngle\": 270,\r\n \"OUT_FlangeAngle\": 90,\r\n \"IN_FlangePosition_z\": -250.0000000000001,\r\n \"OUT_FlangePosition_z\": -250.0000000000001,\r\n \"instrumentation\": false,\r\n \"camera_partition\": [\r\n true,\r\n \"tube_partition\",\r\n {\r\n \"Dimensions\": [\r\n null,\r\n 1000,\r\n null\r\n ]\r\n },\r\n \"Перегородка камеры\",\r\n \"K\"\r\n ],\r\n \"cap_partition\": [\r\n true,\r\n \"tube_partition\",\r\n {\r\n \"Dimensions\": [\r\n null,\r\n 1000,\r\n null\r\n ]\r\n },\r\n \"Name\",\r\n \"A\"\r\n ],\r\n \"loads_fitting_in\": [\r\n 5180,\r\n 3880,\r\n 5180,\r\n 2589000,\r\n 3366000,\r\n 3884000\r\n ],\r\n \"loads_fitting_out\": [\r\n 5180,\r\n 3880,\r\n 5180,\r\n 2589000,\r\n 3366000,\r\n 3884000\r\n ],\r\n \"transition_camera\": false,\r\n \"transition_cap\": false,\r\n \"shell_cap\": false,\r\n \"flow_movement\": true,\r\n \"environmental_hazard_class\": 1,\r\n \"flammability\": true,\r\n \"danger_of_explosion\": true,\r\n \"T_t_medium\": 102.9135201079704\r\n },\r\n \"SHELL\": {\r\n \"corrosion_cracking\": false,\r\n \"IN_input_seal_surface\": \"E-F\",\r\n \"OUT_input_seal_surface\": \"E-F\",\r\n \"IN_row\": \"1\",\r\n \"OUT_row\": \"1\",\r\n \"IN_FlangeAngle\": 90,\r\n \"OUT_FlangeAngle\": 90,\r\n \"IN_FlangePosition_z\": -250.0000000000001,\r\n \"OUT_FlangePosition_z\": 250.0000000000001,\r\n \"instrumentation\": false,\r\n \"longitudinal_partition\": [\r\n true,\r\n \"rectangular\",\r\n {\r\n \"Dimensions\": [\r\n 1846.4,\r\n 1000,\r\n 1\r\n ]\r\n },\r\n \"Name\"\r\n ],\r\n \"anti_bypass_lane\": [\r\n true,\r\n \"rectangular\",\r\n {\r\n \"Dimensions\": [\r\n 2300,\r\n 25,\r\n 4\r\n ]\r\n },\r\n \"Name\"\r\n ],\r\n \"cross_partition\": [\r\n true,\r\n \"circle\",\r\n {\r\n \"Dimensions\": [\r\n [\r\n 3,\r\n 336,\r\n null,\r\n null,\r\n null\r\n ],\r\n [\r\n 448,\r\n 448,\r\n 448,\r\n 448,\r\n 448\r\n ],\r\n 4\r\n ]\r\n },\r\n \"Name\"\r\n ],\r\n \"compensator\": false,\r\n \"loads_fitting_in\": [\r\n 6270,\r\n 4700,\r\n 6270,\r\n 3139000,\r\n 4080000,\r\n 4708000\r\n ],\r\n \"loads_fitting_out\": [\r\n 6270,\r\n 4700,\r\n 6270,\r\n 3139000,\r\n 4080000,\r\n 4708000\r\n ],\r\n \"flow_movement\": true,\r\n \"environmental_hazard_class\": 2,\r\n \"flammability\": true,\r\n \"danger_of_explosion\": true,\r\n \"between_supports\": \"\",\r\n \"n_supports\": \"\",\r\n \"R_pipe_min\": 39,\r\n \"R_pipe_max\": 221,\r\n \"user_fixed_support_poz\": \"\",\r\n \"user_mobile_support_poz\": \"\",\r\n \"user_fixed_support_poz_y\": \"\",\r\n \"user_mobile_support_poz_y\": \"\",\r\n \"T_k_medium\": 12.60774713105906\r\n }\r\n }\r\n }\r\n}","options":{"raw":{"language":"json"}}},"url":"https://23.api3.lotus-uems.ru/sthe/api/v2.0/task_create","urlObject":{"protocol":"https","path":["sthe","api","v2.0","task_create"],"host":["23","api3","lotus-uems","ru"],"query":[],"variable":[]}},"response":[],"_postman_id":"4cce5da8-c2a7-450a-b765-625dfc4cd670"}],"id":"7fffd8c8-b098-4860-b7ea-e44108788262","description":"

Request Structure

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`method`	string	The method to be called. Must be \"mass_calculation\"	✅ Yes
`language`	string	The response language for functions and reports. Currently supported: \"en\" (English)	✅ Yes
`measuring_system`	string	The measurement system in which the data is entered. Available options: \"SI\" (International System of Units)	✅ Yes
`data`	object	Contains the input data for the mesh calculation.	✅ Yes
`data.User_Name`	string	Name of user
`data.reports.scetch`	boolean	Enable sketch	✅ Yes
`data.reports.bill_materials`	boolean	Enable bill of materials	✅ Yes

Design_input_dict Parameters

GENERAL Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`customer`	string	Customer name
`name_apparatus`	string	Apparatus name
`position`	string	Apparatus position in manufactures
`appointment_apparatus`	string	Purpose of the apparatus
`tema`	string	Name type apparatus in TEMA standard	✅ Yes
`media_type`	string	Type of media according to specifications (LOTUS™)
`order`	string	Order Number
`revision`	string	Calculation revision number
`area`	float	Effective area of one enclosure, m²	✅ Yes
`diameter`	float	Diameter of the device, mm	✅ Yes
`heat_load`	float	Heat load, kW
`t_minimum`	float	Temperature minimum, °C	✅ Yes
`climatic`	object	Climatic conditions	✅ Yes
`performance_device`	string	Apparatus performance horizontal or vertical	✅ Yes

TUBE Parameters

Field	Type	Description	Required
`dn_in`	number	DN of inlet pipe, mm	✅ Yes
`dn_in_diffuser`	string	DN max diffuser of inlet branch pipe, mm
`dn_out`	number	DN of outlet spigot, mm	✅ Yes
`dn_out_diffuser`	string	DN max outlet spigot diffuser, mm
`dn_connecting`	string	DN of intermediate nozzle, mm
`dn_deflating`	string	DN of air vent, mm
`dn_drainage`	string	DN of drainage, mm
`p_calculation`	number	Calculation pressure, MPa (Absolute pressure)	✅ Yes
`p_vacuum`	string	Vacuum, kPa (Absolute pressure)
`pn`	number	Conditional pressure, MPa	✅ Yes
`p_in`	number	Inlet pressure, MPa (Absolute pressure)	✅ Yes
`hydraulic_friction`	number	Hydraulic resistance, kPa	✅ Yes
`t_in`	number	Inlet temperature, °C	✅ Yes
`t_out`	number	Outlet temperature, °C	✅ Yes
`t_calculation`	number	Calculation temperature, °C	✅ Yes
`name_medium`	string	Flow name	\"recycled water\"
`mass_consumption`	number	Flow rate of mass medium, kg/h	✅ Yes
`motion`	number	Number of strokes	✅ Yes
`corrosion`	number	Corrosion allowance, mm	✅ Yes

SHELL Parameters

Field	Type	Description	Required
`dn_in`	float	DN of inlet pipe, mm	✅ Yes
`dn_in_diffuser`	float	DN max diffuser of inlet branch pipe, mm
`dn_out`	float	DN of outlet spigot, mm	✅ Yes
`dn_out_diffuser`	string	DN max outlet spigot diffuser, mm
`dn_connecting`	string	DN of intermediate nozzle, mm
`dn_deflating`	string	DN of air vent, mm
`dn_drainage`	string	DN of drainage, mm
`p_calculation`	float	Calculation pressure, MPa (Absolute pressure)	✅ Yes
`p_vacuum`	string	Vacuum, kPa (Absolute pressure)
`pn`	float	Conditional pressure, MPa	✅ Yes
`p_in`	float	Inlet pressure, MPa (Absolute pressure)	✅ Yes
`hydraulic_friction`	float	Hydraulic resistance, kPa	✅ Yes
`t_in`	float	Inlet temperature, °C	✅ Yes
`t_out`	float	Outlet temperature, °C	✅ Yes
`t_calculation`	float	Calculation temperature, °C	✅ Yes
`name_medium`	string	Flow name
`mass_consumption`	float	Flow rate of mass medium, kg/h	✅ Yes
`motion`	integer	Number of strokes	✅ Yes
`corrosion`	float	Corrosion allowance, mm
`corrosion_compensator`	float	Corrosion allowance for compensator, mm

REFERENCE Parameters

TUBE Reference

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`steel`	array	Material of the heat exchanger distribution chamber	✅ Yes
`kit`	object	Fastening materials for flange connections	✅ Yes

kit Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`kit_fitting`	array	Material of fasteners for flange connections of fittings	✅ Yes
`kit_general`	array	Fastening material of the main flange connection	✅ Yes

SHELL Reference

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`steel`	array	Heat exchanger housing material	✅ Yes
`pipe`	array	Material of heat exchange pipes	✅ Yes
`tube_sheet`	array	Material of heat exchange grids	✅ Yes
`floating_head_cover`	array	Material of floating head	✅ Yes
`partition`	array	Material of partition	✅ Yes
`compensator`	array	Material of shell compensator	✅ Yes
`kit`	object	Fastening materials for flange connections	✅ Yes

kit Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`kit_fitting`	array	Material of fasteners for flange connections of fittings	✅ Yes
`kit_general`	array	Fastening material of the main flange connection	✅ Yes

Design_user_input Parameters

GENERAL Parameters

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`execution_tab_1`	integer	Execution of sketch table_1 (for visualization, default 1)
`execution_scheme_load`	integer	Execution of load scheme on sketch (for visualization, default 1)	✅ Yes
`reverse_cemera`	boolean	Change position of the distribution chamber	✅ Yes

TUBE Parameters

Field	Type	Description	Required
`corrosion_cracking`	boolean	Corrosion cracking	✅ Yes
`in_input_seal_surface`	string	Input flange sealing surface design	✅ Yes
`out_input_seal_surface`	string	Design of the sealing surface of the outlet flanges
`in_row`	string	Inlet flange order	✅ Yes
`out_row`	string	Outlet flange row	✅ Yes
`in_flange_angle`	float	Inlet flange angle
`out_flange_angle`	float	Rotation angle of the outlet fitting
`in_flange_position_z`	float	Displacement of the inlet fitting relative to the vertical axis
`out_flange_position_z`	float	Outlet fitting offset relative to the vertical axis
`instrumentation`	boolean	Availability of bosses on the instrumentation fittings	✅ Yes
`camera_partition`	array	Camera partition configuration	✅ Yes
`cap_partition`	array	Cap partition configuration	✅ Yes
`loads_fitting_in`	array	Loads on inlet fittings	✅ Yes
`loads_fitting_out`	array	Loads on outlet fittings	✅ Yes
`transition_camera`	boolean	Camera in the form of a conical shell if one stroke on a pipe	✅ Yes
`transition_cap`	boolean	Cap as a conical shell if one pipe stroke
`shell_cap`	boolean	Shell in cap	✅ Yes
`flow_movement`	boolean	Change the direction of media movement	✅ Yes
`environmental_hazard_class`	number	Environmental hazard class
`flammability`	boolean	Flammability of the medium	✅ Yes
`danger_of_explosion`	boolean	Explosion hazard of the environment	✅ Yes
`t_t_medium`	float	Average pipe temperature, °C	✅ Yes

SHELL Parameters

Field	Type	Description	Required
`corrosion_cracking`	boolean	Corrosion cracking	✅ Yes
`in_input_seal_surface`	string	Inlet flange sealing surface design	✅ Yes
`out_input_seal_surface`	string	Design of the sealing surface of the outlet flanges	✅ Yes
`in_row`	string	Inlet flange order	✅ Yes
`out_row`	string	Outlet flange row	✅ Yes
`in_flange_angle`	float	Inlet flange angle	✅ Yes
`out_flange_angle`	float	Inlet flange angle	✅ Yes
`in_flange_position_z`	float	Displacement of the inlet fitting relative to the vertical axis	✅ Yes
`out_flange_position_z`	float	Outlet fitting offset relative to the vertical axis	✅ Yes
`instrumentation`	boolean	Availability of bosses on the instrumentation fittings	✅ Yes
`longitudinal_partition`	array	Longitudinal partition configuration	✅ Yes
`anti_bypass_lane`	array	Anti-bypass lane configuration	✅ Yes
`cross_partition`	array	Cross partition configuration	✅ Yes
`compensator`	boolean	Need for compensator	✅ Yes
`loads_fitting_in`	array	Loads on inlet fittings	✅ Yes
`loads_fitting_out`	array	Loads on outlet fittings	✅ Yes
`flow_movement`	boolean	Change the direction of media movement	✅ Yes
`environmental_hazard_class`	number	Environmental hazard class	✅ Yes
`flammability`	boolean	Flammability of the medium	✅ Yes
`danger_of_explosion`	boolean	Explosion hazard of the environment	✅ Yes
`between_supports`	string	Distance between supports
`n_supports`	string	Number of supports
`r_pipe_min`	float	Minimum bending radius for U-pipes (from TO, if U-pipe)	✅ Yes, if U-pipe
`r_pipe_max`	float	Maximum bending radius for U-pipes (from TO, if U-pipe)	✅ Yes, if U-pipe
`user_fixed_support_poz`	string	Position of fixed supports (if adjustment is needed)

`user_mobile_support_poz`	string	Position of mobile supports (if adjustment is needed)
`user_fixed_support_poz_y`	string	Position of fixed supports along Y-axis (if adjustment is needed)
`user_mobile_support_poz_y`	string	Position of mobile supports along Y-axis (if adjustment is needed)
`t_k_medium`	float	Average pipe temperature, °C	✅ Yes

Response Fields

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Field	Type	Description	Required
`uuid`	`string`	Unique identifier (UUID v4 format). Used when sending a request to technical support. Sent together with \"rowid\"	✅ Yes
`rowid`	`integer`	Numeric ID of the record. Required to obtain results and calculation status	✅ Yes

","_postman_id":"7fffd8c8-b098-4860-b7ea-e44108788262"}],"id":"c4430b2e-1e02-42bd-bf78-79f406b6e55b","description":"

This section includes everything you need to calculate heat exchangers.

Process includes general functions for calculating heat processes. It includes the determination of the heat balance for five parameters using three different methods and the conversion of volume flow to mass flow.
\n
Solutions provides several heat exchanger designs. Allows multiple solutions to be calculated either by specifying the thermal process parameters or using data calculated from the Procces functions previously. It also allows changes to be made to a specific design to optimise the apparatus.
\n
MassAndSketch allows you to calculate the mass of the apparatuses, get a sketch of the general view and a bill of materials
\n
Cost allows you to determine the cost of materials, the cost of work for manufacturing and to make a report on the cost of the apparatus as a whole.
\n

\n","_postman_id":"c4430b2e-1e02-42bd-bf78-79f406b6e55b"}]}