The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U 0 = 400 W/m 2 .K. The fouling factor after one year of operation is found to be h d0 = 2000 W/m 2 .K. The overall heat transfer co-efficient at this time is

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

1.	The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U 0 = 400 W/m 2 .K. The fouling factor after one year of operation is found to be h d0 = 2000 W/m 2 .K. The overall heat transfer co-efficient at this time is
A.	1200W/m 2 .K
B.	894W/m 2 .K
C.	333W/m 2 .K
D.	287 W/m 2 .K
Answer» D. 287 W/m 2 .K

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The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U 0 = 400 W/m 2 .K. The fouling factor after one year of operation is found to be h d0 = 2000 W/m 2 .K. The overall heat transfer co-efficient at this time is

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