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Heat Transfer

Heat Transfer
Duhring rule is important in solving problems on

Humidification
Crystallisation
Distillation
Evaporation

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Heat Transfer
The equation, (NSt x N2/3Pr) = f/2, is the __________ analogy.

None of these
Colburn
Reynolds
Prandtl

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

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

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Heat Transfer
In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used

Because of its low cost
To prevent corrosion of the tube bundles
In low range of temperature differences
In high range of temperature differences

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Heat Transfer
If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid

Increases or decreases depending on number of shell passes
Decreases
Increases
Remains unchanged

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Heat Transfer
The purpose of providing bleed points in the evaporator is to

Admit the feed
Create vacuum
Facilitate removal of non-condensable gases
Remove the product

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