The PRO/II shows a steam temperature of 254°C at 1600 kPa; shouldn’t it be 202°C? Could someone tell me how to set it up so that it shows...
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This post was last edited by longkui1990 on 2015-8-24 10:40, as titled
Additional information: TOTAL VAPOR ---------- ---------- RATE, KG-MOL/HR 333.0506 333.0506 TEMPERATURE, C 254.87 254.87 PRESSURE, KPA 1600.00 1600.00 MOLECULAR WEIGHT 18.0153 18.0153 FRACTION 1.0000 ENTHALPY, KJ/KG-MOL 53094.8316 53094.8316 CP, KJ/KG-C 2.2461 2.2461 These are the correct values; how can the errors mentioned above be resolved? TOTAL VAPOR ---------- ---------- RATE, KG-MOL/HR 138.7711 138.7711 TEMPERATURE, C 201.62 201.62 PRESSURE, KPA 1600.00 1600.00 MOLECULAR WEIGHT 18.0153 18.0153 FRACTION 1.0000 ENTHALPY, KJ/KG-MOL 51332.8458 51332.8458 CP, KJ/KG-C 2.1072 2.1072
The pressure isn’t set correctly, right? ? ?
Is the pressure gauge pressure or absolute pressure? There is a big difference between these
There’s a problem with the title – 1600 kg and 1600 kPa are not the same, right? Check the gauge pressure and absolute pressure settings to see if overheating is not occurring
Isn’t pressure the default setting of the system? Where should gauge pressure or absolute pressure be set?
It’s not a pressure issue; there’s definitely overheating during the process
This is the incoming steam stream; the first specification pressure is 1600.0 kPa, and the second specification is the dew point
Is it the same process or is only one flow of material specified? I see that your traffic volume is different; are you looking at the logistics of this item itself or those of the subsequent items? These might have an impact on
The last edit to this post was made by Revolution Killer on 2015-7-29 at 23:24; in PORII, kPa represents absolute pressure, while gauge pressure is indicated as kPag – this is common knowledge. If the temperature is given as the dew point, it means saturated steam; the bubble point temperature calculated in this case is 201°C. Does the poster have any other unit operations? It would be best to upload the PRZ file for a look.