Surface area required for counter flow & parallel flow operation - Heat Transfer

Q.  For the same heat transfer Q and same overall heat transfer coefficient Uo, surface area required for parallel flow operation is always
- Published on 12 Aug 15

a. less than LMTD for counter flow
b. more than LMTD for counter flow
c. same as LMTD for counter flow
d. unpredictable

ANSWER: more than LMTD for counter flow

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