Question

Given below are two statements one is labelled as Assertion A and the other one labelled as Reason R

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
• C. (A) is true but (R) is false.
• D. (A) is false but (R) is true.

Hint:

Effectiveness-NTU method relies on the inlet temperatures of both fluids while the LMTD method requires both inlet and outlet temperatures of the fluids

Answer 1

The Correct Option is C

The Effectiveness-NTU method of heat exchanger design requires inlet temperatures of the fluids while the LMTD method requires both inlet and outlet temperatures for both fluids Hence A is true but R is false as the LMTD method does not require only inlet and outlet temperatures for both fluids but other parameters as well