A heat exchanger was required to cool a liquid from 150 to 110 , but – McqOptions

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1.	A heat exchanger was required to cool a liquid from 150 to 110 , but the outlet temperature was increased by 3 every month for same heat transfer. What should have been the fouling factor if U_D = 80?
A.	94
B.	49
C.	85
D.	90
Answer» B. 49

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