Approach temperature

Discusses use of COCO, the process simulation and modelling software suite from AmsterCHEM, downloadable from http://www.cocosimulator.org

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Approach temperature

Postby thubelihle » 20 April 2022, 14:30

I have supply water at 90F to use source of cooling and l want it to heated to 120 to avoid fouling. I want to use a temperature approach of 10F. So do l use 90+ 10= 100F or 120 + 10 = 130 to get the condenser pressure. Thanks
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Re: Approach temperature

Postby jasper » 20 April 2022, 17:56

Quoting Ross Taylor:

The temperature and pressure of the coolant in the condenser plays no role in setting the pressure of the condenser (which, I assume, is attached to a column). These things are completely independent. If ChemSep is the column model then you do not need to know (and cannot, in any case, provide) the pressure of the coolant.
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Re: Approach temperature

Postby thubelihle » 21 April 2022, 04:10

Gooday,
I meant the pressure of the condenser, so as to determine the pressure of the column based on Tdew of the distillate
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Re: Approach temperature

Postby jasper » 21 April 2022, 12:20

If you are using 120 F water to cool with a 10 F approach temperature, you should probably have your condensor at 130 F.
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