Brinell hardness number (BHN) of a material is a number, which has

Question: Multiple effect evaporators ar used to
[A].

increase the steam economy & decrease the capacity.

[B].

increase the steam economy & the capacity.

[C].

decrease the steam economy & the capacity.

[D].

decrease the steam economy & increase the capacity.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Log mean temperature difference (LMTD) cannot be used, if
[A].

heat transfer co-efficient over the entire heat exchanger is not constant.

[B].

there exists an unsteady state.

[C].

the heat capacity is not constant and there is a phase change.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

Question: A fluid is flowing inside the inner tube of a double pipe heat exchanger with diameter ‘d’. For a fixed mass flow rate, the tube side heat transfer co-efficient for turbulent flow conditions is proportional to
[A].

d0.8

[B].

d-0.2

[C].

d-1

[D].

d-1.8

Answer: Option B

Explanation:

No answer description available for this question.