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Heat Transfer

Heat Transfer
Reynold's analogy states that

Nst α NRe
NRe α f
NNu α f
Nst α f

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Heat Transfer
LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is

1
Zero
<1
>1

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Heat Transfer
The sum of reflectivity and absorptivity for an opaque body is equal to

1
0.5
2

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Heat Transfer
Solid angle subtended by the finite surface at the radiating element is

called the view factor.
expressed in terms of radians
proportional to the square of the distance between surfaces
called the angle of vision

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Heat Transfer
__________ equation relates the thermal conductivity of a solid to its temperature.

Lee's
Kistyakowski
Kopp's
Antonie

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Heat Transfer
The purpose of providing a 'catchall' in the vapor line of an evaporator is to

Regulate the vapor flow
Arrest the entrained liquid
Create vacuum
Vent the non-condensible gases

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