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Chemical Engineering - Heat Transfer

Exercise : Heat Transfer - Section 6
46.
Tube expansion allowances exist in __________ heat exchanger.
multipass fixed tube sheet
U-tube
single pass fixed tube sheet
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Pick out the wrong statement.
In drying a solid containing moisture above the critical moisture content the number of degrees of freedom is 2.
Sherwood number in mass transfer corresponds to Nusselt number in heat transfer and Schmidt number to Prandtl number.
Forced convection is relatively more effective in increasing the rate of mass transfer, if Schmidt number is larger.
Hot gases at moderate pressure are usually in the shell side of shell and tube heat exchangers. At higher pressure, however, it is customary to put gas in the tube side.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Agitated film evaporator is suitable for concentrating __________ liquids.
foaming
viscous
very thin
corrosive
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
The thickness of condensate layer in filmwise condensation depends on the
condensation rate
surface configuration
liquid flow rate from the surface
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law.
parabolic
hyperbolic
linear
logarithmic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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