Jump to content



Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog

- - - - -

Heat Exchanger Inlet Pressure


This topic has been archived. This means that you cannot reply to this topic.
2 replies to this topic
Share this topic:
| More

#1 Tommy

Tommy

    Junior Member

  • Members
  • 12 posts

Posted 05 August 2004 - 11:23 AM

Dear all,

I have the following question:

Considering a shell and tube heat exchanger (BFU type), what happens if there is an inlet shell pressure change?
In particular if the shell side fluid is sea water at 15°C and the heat exchanger has been sized for a flow of 87000 kg/h at 5.3 barg, could happens some changes in heat exchange if the same fluid with the same flow is sent at 2 barg?

Thanks
Tommy

#2 hduncan8943

hduncan8943

    Brand New Member

  • Members
  • 7 posts

Posted 05 August 2004 - 11:39 PM

Tommy,
If you were working with a gas, then an increase in pressure usually increases the heat transfer coefficient. Since your working with a liquid, I wouldn't expect to see any change in the coefficient by increasing the pressure.

#3 David Southall

David Southall

    Junior Member

  • ChE Plus Subscriber
  • 16 posts

Posted 17 August 2004 - 08:18 PM

It shouldn't have much effect on the liquid properties. If you were boiling the water, you would elevate the boiling point accordingly, and lose some latent heat transfer in favour of sensible heat transfer, but I'm assuming the water remains liquid here?

Remember to spec the design pressure for the worst case in terms of your pressure fluctations, i.e. spec the design pressure with the highest operating pressure in mind.




Similar Topics