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Heat Transfer

Heat Transfer
In the free convection regime of pool boiling, the heat flux is proportional to

Δt2
Δt1/2
Δt
Δt5/4

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Heat Transfer
In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to __________ the velocity head

square root of
twice
four times
none of the listed here

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Heat Transfer
Nusselt number for full developed, laminar, constant property flow in a pipe at uniform heat flux is

0.72
83
18
4.364

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Heat Transfer
Evaporator tubes are generally

Horizontal
Vertical
Random
Inclined

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Heat Transfer
For an ideal black body

Transmissivity = 1
Emissivity = 0
Absorptivity = 1
Reflectivity = 1

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Heat Transfer
In forced convection, the heat transfer depends on

Re, Pr
mainly Gr
Re, Gr
none of the listed here

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