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Purpose Of Condensate Pot In Steam Reboilers


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#1 Chalapathi

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Posted 23 September 2019 - 08:28 PM

Dear All,

 

I would like to understand, purpose of condensate pot in steam reboiler, I have read few articles, which states, condensate pot will provide the liquid seal, to avoid blowing of steam outside the heat exchanger, and break in the seal result in heat transfer losses.

 

I would like to understand how exactly, it results in heat transfer losses?. Thank you.

 

 

What is the purpose of equalization line that is provided on condensate pot with steam pressure?



#2 breizh

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Posted 23 September 2019 - 08:56 PM

Hi ,

Consider the document attached .

Hope this is helping you.

Breizh

Attached Files



#3 fallah

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Posted 24 September 2019 - 03:32 AM

 

I would like to understand, purpose of condensate pot in steam reboiler, I have read few articles, which states, condensate pot will provide the liquid seal, to avoid blowing of steam outside the heat exchanger, and break in the seal result in heat transfer losses.

 

I would like to understand how exactly, it results in heat transfer losses?. Thank you.

 

 

What is the purpose of equalization line that is provided on condensate pot with steam pressure?

 

Hi Chalapathi,

 

Condensate pot is mostly applied in a steam reboiler to keep the live steam from passing into the downstream condensate line.

 

In general, reboiler balance line is a line connecting the condensate pot to the reboiler inlet in order to pressure equalization between mentioned pot and the reboiler. Such balancing allows the condensate will be easily conducted to the pot from the reboiler.



#4 fallah

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Posted 24 September 2019 - 03:47 AM   Best Answer

Hi Chalapathi,

 

In addition, heat transfer losses following to passing the live steam into the downstream condensate line is mostly due to the not used latent heat of the passed steam...



#5 Chalapathi

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Posted 24 September 2019 - 03:19 PM

Thank You all, for your response on the topic. I could understand and feel the concept now.



#6 Bobby Strain

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Posted 24 September 2019 - 06:29 PM

There is no loss in heat transfer. But, there is energy loss if steam is discharged as Fallah stated.

 

Bobby



#7 PhilippM

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Posted 25 September 2019 - 04:40 AM

I don't want to split hairs, but technically there is a heat transfer loss, isn't there? The steam passes through the reboiler without condensing, the heat transfer coefficient however is higher with condensation than it is without.

 

So both the energy is wasted (as the steam is discharged into the condensate system) and the heat transfer is lower, resulting in less heat transfer and therefore less duty and evaporation in the reboiler.

 

EDIT: Thought about it again: Of course there is condensation at the tubes, so the the heat transfer coefficient doesn't change. As the pressure is probably not properly maintained anymore however, the condensation temperature is lower, so the duty is reduced.


Edited by PhilippM, 25 September 2019 - 05:07 AM.


#8 Bobby Strain

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Posted 25 September 2019 - 10:51 PM

The condensate pot, properly installed and instrumented, is a highly reliable steam trap. And should only be used as such.

 

Bobby






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