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Heat balance problem

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Old   February 20, 2008, 13:52
Default Heat balance problem
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Hi all ,

I am solving heat transfer in compact heat exchager with two channels seperaed by wall .The problem which I faced is the heat lost by the hot fluid did not equal to the heat received by the cold fluid where in fact must be Qh=Qc.

I need your help to guid me why this happened ?why there are no heat balance .

Thanks alot
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