Heat Transfer Alaysis

kumar.praveensp · October 20, 2013, 23:10

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

ghorrocks · October 21, 2013, 05:17

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?

kumar.praveensp · October 21, 2013, 05:58

[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

ghorrocks · October 21, 2013, 06:05

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?

kumar.praveensp · October 21, 2013, 06:32

[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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October 21, 2013, 05:17		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	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?

October 21, 2013, 05:58		#3
kumar.praveensp New Member Praveen Kumar Join Date: Sep 2013 Location: Busan Posts: 3 Rep Power: 12	[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

October 21, 2013, 06:05		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	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?

October 21, 2013, 06:32		#5
kumar.praveensp New Member Praveen Kumar Join Date: Sep 2013 Location: Busan Posts: 3 Rep Power: 12	[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