Chemical Engineering :: Heat Transfer
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Which area is used in case of heat flow by conduction through a cylinder ?
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Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place
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The dimensionless group in mass transfer that is equivalent to Prandtl number in heat transfer is
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Finned tube heat exchangers
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The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation.
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Which one gives the monochromatic emissive power for black body radiation ?
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In a shell and tube heat exchanger,
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Dietus-Boelter equation used for the determination of heat transfer co-efficient is valid
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A.
the temperature drops in the two fluids and the wall are proportional to individual resistances.
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B.
the temperature drop is inversely proportional to the resistance across which the drop occurs.
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C.
there is no relationship between temperature drop and resistance.
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D.
the relationship is not generalised.
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, corrosponds to __________ analogy.