Chemical Engineering

A wall has two layers of materials A and B; each made of a different material. Both the layers have the same thickness. The thermal conductivity of materialA is twice that of B. Under the equilibrium, the temperature difference across the wall is 36°C. The temperature difference across the layer A is __________ °C.

by
Question: A wall has two layers of materials A and B; each made of a different material. Both the layers have the same thickness. The thermal conductivity of materialA is twice that of B. Under the equilibrium, the temperature difference across the wall is 36°C. The temperature difference across the layer A is __________ °C.
[A].

6

[B].

12

[C].

18

[D].

24

Answer: Option B

Explanation:

No answer description available for this question.

It is not recommended to use a 1-2 shell and tube heat exchanger for a particular heat duty, whenever the LMTD correction factor is

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Question: It is not recommended to use a 1-2 shell and tube heat exchanger for a particular heat duty, whenever the LMTD correction factor is
[A].

&gt 0.75

[B].

< 0.75

[C].

< 0.50

[D].

< 0.25

Answer: Option B

Explanation:

No answer description available for this question.

For the same heat transfer area and the terminal conditions, the ratio of the capacities of a single effect evaporator to a triple effect evaporator is

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Question: For the same heat transfer area and the terminal conditions, the ratio of the capacities of a single effect evaporator to a triple effect evaporator is
[A].

3

[B].

0.33

[C].

1

[D].

1.33

Answer: Option C

Explanation:

No answer description available for this question.