Pick out the wrong statement.
A) Superheated steam is preferably not used for process heating because of its low heat transfer film co-efficient
B) In a shell and tube heat exchanger, the shell pressure drop is maximum for orifice baffles
C) S.I. unit of fouling factor is Watt/m2 .°K
D) Longitudinal fins are used in extended surface heat exchangers, when the direction of fluid flow is parallel to the axis of the tube
Correct Answer:
Verified
Q23: In case of a multipass shell and
Q24: _ paint has the maximum absorption coefficient.
A)Black
B)Yellow
C)White
D)Grey
Q25: The advantage of backward feed multiple effect
Q26: Baffles are provided in heat exchangers to
Q27: Film boiling is usually not desired in
Q29: A dephlegmator is a
A)Total condenser
B)Vacuum evaporator
C)Partial condenser
D)Double
Q30: Prandtl and Reynold's analogies are identical for
Q31: Reynold's analogy states that (where, St =
Q32: The rate of heat transfer through a
Q33: Heat transfer by natural convection is enhanced
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