Chemical Engineering :: Heat Transfer
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In a gas-liquid shell and tube heat exchanger, the
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Which is the most suitable for the concentration of foamy & frothy liquors ?
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Boiling point elevation of an ideal solution
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The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the
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Which of the following has the lowest overall heat transfer co-efficient ?
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Which of the following has the minimum absorptivity ?
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A black body when hot, emits heat radiation of __________ wavelengths.
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A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when
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Vibrations in the tubes of a shell and tube heat exchanger is induced due to the
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Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is
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A.
presence of a non-condensible gas decreases the condensing film co-efficient.
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B.
gases under high pressure are routed through the tube side, because high pressure gases are corrosive in nature.
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C.
gases to be heated/cooled is normally routed through the shell side, because the corrosion caused by the cooling water or steam condensate remain localised to the tubes.
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D.
all 'a', 'b' & 'c'
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