Chemical Engineering :: Heat Transfer
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Choose the most important factor on which the heat conducted through a wall in a unit time will depend on ?
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Which of the following has the minimum thermal conductivity ?
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In a heat exchanger, one transfer unit means
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For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then
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Pick out the wrong statement:
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For concentrating an aqueous solution of a material like anhydrous Na2SO4, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator.
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Circulation pump is located below the evaporater to
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The statement that "maximum wavelength of radiation is inversly proportional to the temperature" is __________ law.
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Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low
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At steady state the temperature variation in a plane wall, made of two different solids I & II is shown below :
The thermal conductivity of material I
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A.
The capacity of an evaporator is reduced by the boiling point elevation.
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B.
Corrosive liquid is normally passed through the tubes in a shell and tube heat exchanger.
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C.
Steam jet ejector is used for vapor compression in a thermal recompression evaporator.
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D.
Heat sensitive materials should be concentrated in high pressure evaporators.
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