November 29, 2023, 07:58:35 AM
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### Topic: problem with condensation  (Read 16300 times)

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#### technologist

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##### Re: problem with condensation
« Reply #15 on: June 17, 2008, 12:30:30 AM »
Simply take latent heats of methanol & water and calculate condensing load - Convert it to TR of refrigeration - Add process losses ~20% in 0°C chilling system. Find out steam requirement by thumb rule of 10 Kg/TR & U will get the no.

I dont know what is flash condensation.

#### coolsuman

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##### Re: problem with condensation
« Reply #16 on: June 17, 2008, 01:58:24 AM »
hai technologist,
flash condensation is nothing but flash separation, here it was condensing so i wrote flash condensation. this work i had done in aspen plus.
condensing load means just calculation of sensible entalphies right? if not please elucidate me. thanking you for spending your valuable time.

#### technologist

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##### Re: problem with condensation
« Reply #17 on: June 17, 2008, 04:54:59 AM »
Condensing load means latent heat of condensation which is much larger than sensible heat.

I could not understand flash condensation.

U r getting vapors of methanol & water from your pervaporation unit. So how can U flash vapors. Is it by pressure change or temp change.

#### coolsuman

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##### Re: problem with condensation
« Reply #18 on: June 17, 2008, 06:12:18 AM »
hai technologist,
ok, its not flash, it is fractional condensation, by decreasing from 280k - 278 k , by that some of the water and methanol condenses as liquid. that liquid had distillation done and it was made to 98 wt%