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Heat Transfer

Heat Transfer
Choose the correct equation.

Nu = (Re) (Pr) (Gz)
Nu = (Pr)(St)
Nu = (Re)(Pr)
Nu = (Re) (Pr) (St)

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Heat Transfer
The actual temperature drop across the heating surface of an evaporator depends on the

Solution being evaporated
Pressure difference between the steam chest and the vapor space above the boiling liquid
All of these
Liquid depth over the heating surface

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Heat Transfer
Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter)

0.5 D
0.4 D
0.3 D
0.2 D

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Heat Transfer
__________ equation relates the thermal conductivity of a solid to its temperature.

Antonie
Kopp's
Lee's
Kistyakowski

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Heat Transfer
All analogy equations connecting friction factor and heat transfer co-efficient apply only to

Both A and B
Turbulent flow
Form friction
Wall or skin friction

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Heat Transfer
Intermittant tube cleaning is possible to be done in case of a __________ evaporator.

Calendria
Basket type
None of these
Horizontal tube

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