Shell and tube heat exchanger temperatures

[spud22]

I need a shell and tube heat exchanger to heat a liquid from 170 F to 200 F. I have steam at 120 psig available on the shell side. What do I use as my Delta T? Assuming 5% moisture, I am down to about 30 psig steam equilibrium. That gives me a LMTD of about 30 F. Am I on the right track, or do I need to use the steam temperature at 120 psig?

 

[LittleInch]

You're in the wrong forum. Try heat transfer and thermodynamics. either cross refer or better still red flag your original post and start another one in the better forum.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[EmmanuelTop]

For calculating LMTD, refer to

http://www.spiraxsarco.com/Resource...inciples-and-heat-transfer/heat-transfer.aspx

and look at examples 2.5.3 and 2.5.4.

For steam at 120 psig, use the corresponding saturation temperature (350 degF).


Dejan IVANOVIC
Process Engineer, MSChE