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Heat Transfer

Heat Transfer
Radiation heat losses from satisfactorily insulated high pressure boilar may be about __________ percent.

18
1
7
26

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Heat Transfer
In forced convection, the Nusselt number is a function of

Re and Pr
Re and Gr
Re and Sc
Pr and Gr

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

Δt1/2
Δt
Δt2
Δt5/4

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Heat Transfer
Multiple effect evaporation accounts for

None of these
Steam economy
Investment economy
Lower operating costs

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Heat Transfer
Forced circulation evaporators are normally used for concentrating liquids having

Neither A nor B
Scaling characteristics
Both A & B
High viscosity

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Heat Transfer
Evaporator tubes are generally

Horizontal
Random
Inclined
Vertical

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