Chemical Engineering :: Heat Transfer
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The advantage of using a 1 - 2 shell and tube heat exchanger over a 1 - 1 shell and tube heat exchanger is
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For a multipass shell and tube heat exchanger, the LMTD correction factor is always
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If heat transfer rate varies with the time, it is termed as
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Pick out the wrong statement.
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Tube expansion allowances exist in __________ heat exchanger.
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Pick out the wrong statement.
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Agitated film evaporator is suitable for concentrating __________ liquids.
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The thickness of condensate layer in filmwise condensation depends on the
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If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law.
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A.
Fluid movement under the influence of buoyant forces resulting from change in density takes place in case of natural convection.
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B.
The ratio NNu/NRe . Npr is called the Stanton number.
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C.
The Peclet number is a measure of the ratio of energy transport by convection to that by conduction.
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D.
The Colbum jH factor for heat transfer is given by Nst Npr.
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A.
In drying a solid containing moisture above the critical moisture content the number of degrees of freedom is 2.
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B.
Sherwood number in mass transfer corresponds to Nusselt number in heat transfer and Schmidt number to Prandtl number.
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C.
Forced convection is relatively more effective in increasing the rate of mass transfer, if Schmidt number is larger.
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D.
Hot gases at moderate pressure are usually in the shell side of shell and tube heat exchangers. At higher pressure, however, it is customary to put gas in the tube side.
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