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heat exchanger size and flow

heat exchanger size and flow

heat exchanger size and flow

(OP)
We want to change our actual heat exchanger that has the following specs:

SQ.FT: 250
Tube diameter: 3/4"
# tubes: 250 tubes
Length of tubes: 5 feet

For a bigger exchanger, with the following specs

SQ.FT: 338
Tube diameter: 1"
# tubes: 261 tubes
Length of tubes: 5 feet

How is our flow going to be affected?

thanks for your help on this one

RE: heat exchanger size and flow

Q=ṁΔT

Patricia Lougheed

******

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RE: heat exchanger size and flow

See attached.
Note that G=mass/(time * area)
Your pressure drop will change by 0.8 power

RE: heat exchanger size and flow

(OP)
Thank you both for your replies:

 Chance17: I still cannot open your file...

 vpl: how can i apply the q=mxcxAT formula, are the q are AT equal for both exchangers?

 

RE: heat exchanger size and flow

bragamor i think you should hire a professional consultant. This is not a "free consultancy service". What will you do if it does not work as you expect? Tell your boss that "those amateurs (no offence guys) didnt know what they were talking about"?

Or - talk to the vendor...

Best regards

Morten

 

RE: heat exchanger size and flow

bragamor . . . insufficient information is given to answer your question (spedifically, process flow conditions for both streams).  MortenA recommendation is good!  changing the physical characteristics of a heat exchanger without obtaining sound technical (heat transfer specialist) information is risky and bound for operational problems.

good luck!
-pmover

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