Question: How to calculate the temperature difference between hot and cold flow to determine heat exchanger area for following process: Suppose you have a counter flow

How to calculate the temperature difference between hot and cold flow to determine heat exchanger area for following process:

Suppose you have a counter flow heat exchanger which is most efficient.

U = 1100 U (W/m2 oC)

Tcooling(in) (oC) = 10

Tcooling(out) (oC) = 37

How to calculate the temperature difference between hot and cold flow to

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