The overall heat transfer co-efficient for a shell and tube heat excha – McqOptions

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1.	The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m2.K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m2.K. The overall heat transfer co-efficient at this time is _____________________?
A.	1200 W/m2.K
B.	894 W/m2.K
C.	333 W/m2.K
D.	287 W/m2.K
Answer» D. 287 W/m2.K

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