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Old   October 20, 2013, 23:10
Arrow Heat Transfer Alaysis
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Praveen Kumar
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Dear Friends,
I am working on heat transfer analysis of an heat exchanger.
I tried it for the first time and am not sure of the result which I obtained. Needed some guidance from u friends. I don't know what went wrong while deriving conditions.

Details:
* FinTube Heat Exchanger (without fins)
* Fluid is Oil in pipe, inlet temperature is 215 F
* Gas flows over the pipe from bottom to top whose inlet temperature is 922.5 F
*In my result I don't find any variation in temperature at both the outlets.


Note : I have attached the image files of my problem

Thanks in Advance
Attached Images
File Type: jpg gas Result.jpg (73.6 KB, 15 views)
File Type: jpg geometry - (CFX Pre).jpg (97.8 KB, 13 views)
File Type: jpg oil Result.jpg (24.4 KB, 12 views)
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Old   October 21, 2013, 05:17
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Glenn Horrocks
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What sort of variation are you expecting to see? Your images seem to show all fluids equalising out at about 767K - is there something wrong with this?
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Old   October 21, 2013, 05:58
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[QUOTE=ghorrocks;458016]What sort of variation are you expecting to see? Your images seem to show all fluids equalising out at about 767K - is there something wrong with this?


Thank You For the concern Sir,
I need to find the temperature variation at the outlet of the pipe,In my result the temperature is same as gas temperature, is that right? I feel it dont
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Old   October 21, 2013, 06:05
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This can happen depending on the heat exchanger operating point. I say again - what do you expect to happen? Are you trying to match experimental results?
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Old   October 21, 2013, 06:32
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[QUOTE=ghorrocks;458037]This can happen depending on the heat exchanger operating point. I say again - what do you expect to happen? Are you trying to match experimental results?

yes we trying to compare it with experimental results
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