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Heat Transfer

Heat Transfer
jH factor for heat transfer is not a function of the __________ number.

Grashoff
Reynolds
Both B & C
Nusselt

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Heat Transfer
An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is

4600
9000
3000
4000

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Heat Transfer
The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8.

40.4
40.8
20.4
20.8

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Heat Transfer
For specified tube outside diameter, higher BWG means higher

cross-sectional area
none of the listed here
tube thickness
weight per unit length

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Heat Transfer
For a cold dilute feed to produce thick viscous liquor, backward feeding as compared to forward feeding results in

Decreased economy
Increased economy
Lower capacity
No effect on economy

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Heat Transfer
The unit of conductance in SI unit is

W/m²
W/m°K
W/m
W/°K

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