Open pan evaporators are preferred to be used, when the solution to be concentrated is
A) Scaling
B) Highly viscous
C) Corrosive
D) Salty
Correct Answer:
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Q15: It is not preferable to use superheated
Q16: Water is normally used as a coolant
Q17: A single pass air heater is connected
Q18: At constant temperature, the thermal conductivities of
Q19: Stefan-Boltzmann law applies to _ body.
A)Black
B)White
C)Grey
D)Any colour
Q20: When warm and cold liquids are mixed,
Q21: A BTU/hr.ft.2 °F is equal to
A)1 kcal/hr.
Q23: A _ evaporator employs an annular downtake.
A)Basket
Q24: The equation, Nst = (f/2)/[1 + 5
Q25: The advantage of using a 1 -
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