Chemical Engineering :: Process Equipment and Plant Design
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In inclined long tube vertical evaporators, the tubes are inclined at an angle of
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In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.
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The wall thickness for a large high pressure pipeline is determined by the consideration of the
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In the case of a shell and tube heat exchanger, the logarithmic mean temperature difference
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Skirt support is the most suitable for supporting __________ vessels.
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Baffles may be eliminated for
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Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency
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In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.
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For pipe flows, head is proportional to __________ at constant capacity (where D = pipe diameter ).
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A.
is always less than arithmetic average value.
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B.
is always more than arithmetic mean value and the geometric mean value.
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C.
is always less than arithmetic mean value, but more than geometric mean value.
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D.
may be either more or less than geometric mean and arithmetic mean value depending upon whether the flow of stream is co-current or counter-current.
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