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Chemical Engineering - Heat Transfer

Exercise : Heat Transfer - Section 1
31.
Kirchoff s law applies to __________ radiation.
total
monochromatic
both (a) & (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
With the increase of temperature, the Col-burn jH factor
increases.
decreases.
remains unchanged.
may increase or decrease ; depending on temperature.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
In case of evaporators, liquid entrainment results primarily due to
high vacuum in the evaporator.
high evaporation rate.
foaming of the solution.
high heat transfer rate.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Baffles in the shell side of a shell and tube heat exchanger
increase the cross-section of the shell side liquid.
force the liquid to flow parallel to the bank.
increase the shell side heat transfer co-efficient.
decrease the shell side heat transfer co-efficient.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is
finned tube heat exchanger with air inside and steam outside.
finned tube heat exchanger with air outside and steam inside.
shell and tube heat exchanger with air inside tubes and steam on shell side.
shell and tube heat exchanger with air on shell side and steam inside tubes.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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