Chemical Engineering :: Heat Transfer
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The type of liquor circulation system to be ' employed in evaporators (viz. natural or forced circulation) is determined mainly by the __________ of the liquid.
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In case of surface condensers, a straight line is obtained on plotting
__________ on an ordinary graph paper. -
Thermal diffusivity is the most important in heat transfer by
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A dephlegmator is a
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A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun ?
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The separation of liquid droplets from the vapor is done by a/an __________ , in the evaporators.
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Fouling factor for a heat exchanger is given by (where, U1 = heat transfer co-efficient of dirty surface U2 = heat transfer co-efficient of clean surface)
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If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will
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A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large.
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