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Heat Transfer

Heat Transfer
Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is

>1
L
< 1
0.1

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Heat Transfer
Reynold's analogy states that

NNu α f
Nst α f
NRe α f
Nst α NRe

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Heat Transfer
The number of kg vaporised per kg of steam fed to the evaporator is defined as

Capacity
Rate of evaporation
Rate of vaporisation
Economy

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Heat Transfer
For what value of Prandtl number, the Col-burn analogy is valid ?

l to 50
1 to 103
0.6 to 120
0.06 to 120

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Heat Transfer
Evaporator tubes are generally

Inclined
Horizontal
Vertical
Random

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Heat Transfer
1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is

520
200
400
500

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