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Shell and tube heat exchanger temperatures

Shell and tube heat exchanger temperatures

Shell and tube heat exchanger temperatures

(OP)
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?

RE: Shell and tube heat exchanger temperatures

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.

RE: Shell and tube heat exchanger temperatures

For calculating LMTD, refer to http://www.spiraxsarco.com/Resources/Pages/Steam-E... 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

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