Chemical Engineering - Heat Transfer

11.
The ratio of velocity head to tube side return loss in case of a multipass shell and tube heat exchanger is
2
1/2
4
1/4
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
Terminal point temperature differences between fluids in case of a heat exchanger is termed as
approach.
log mean temperature difference.
arithmetic mean temperature difference.
geometric mean temperature difference.
Answer: Option
Explanation:
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13.
LMTD can't be used as such without a correction factor for the
multipass heat exchanger.
baffled heat exchanger.
condensation of mixed vapour in a condenser.
all (a) (b) and (c).
Answer: Option
Explanation:
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14.
Fqra cold viscous feed, backward feed gives __________ than forward feed.
a higher capacity
a lower capacity
lower economy
none of these
Answer: Option
Explanation:
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15.
Walls of a cubical oven are of thickness l, and they are made of material of thermal conductivity k. The temperature inside the oven is 100°C and the inside heat transfer co-efficient is 3k/l. If the wall temperature on the outside is held at 25°C, what is the inside wall temperature in degree centigrade ?
35.5
43.75
81.25
48.25
Answer: Option
Explanation:
No answer description is available. Let's discuss.