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 for heat exchanger design requires fluid inlet temperatures. In contrast, the LMTD method necessitates both fluid inlet and outlet temperatures. Consequently, A is true and R is false, because the LMTD method also depends on other parameters, not solely fluid inlet and outlet temperatures.