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Heat Exchanger Efficiency (Relation Between Flow And Heat Transfer)


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#1 titim

titim

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Posted 24 April 2017 - 02:13 AM

hi, i need your help  to find a relation ( schema, book) between the heat transfer (the decreasing of the temperature) in heat exchanger (shell and tube) and the flow of the cold stream f(t°c of outlet hot stream)= flow of the cold stream), that mean if i increas the flow of the cold stream i get the decreasing of the hot stream, and until when?, and after that can i get the decreasing of  temperature of the outlet hot stream or no ?. thank you.


Edited by titim, 24 April 2017 - 06:54 AM.


#2 Saml

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Posted 24 April 2017 - 10:07 AM

For an approximation, you can use the NTU method from a known UxA condition.

For more precise answer, a simulation of different operating points with the fouling adjusted to the known condition.






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