Chemical Engineering :: Heat Transfer
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What is the unit of thermal conductivity ?
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The thermal radiation emitted by a body is proportional to Tn, where T is its absolute temperature. The value of 'n' is exactly 4 for
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It is not preferable to use superheated steam in evaporators, because of its very
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It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. The rate at which the heat has to be supplied in (kJ/min) to the evaporator is
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LMTD for counterflow and prallel flow heat exchanger will be the same, when the
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For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number)
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The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns.
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Use of transverse baffles in a shell and tube heat exchanger is done to increase the
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The actual temperature drop across the heating surface of an evaporator depends on the
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Economy of a multiple effect evaporator depends upon the
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