A 2-4 heat exchanger involves

1.	A 2-4 heat exchanger involves
A.	only counter-flow of fluids.
B.	only parallel-flow of fluids.
C.	both counter and parallel-flow of the fluids.
D.	smaller pressure drop compared to 1-2 exchanger.
Answer» D. smaller pressure drop compared to 1-2 exchanger.

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A 2-4 heat exchanger involves

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