EXAMIANS
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of
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Liquid gradient over a tray can be minimised by
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The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.
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Thickness of the frame of a plate and frame filter as compared to that of plates is
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The stress developed in a material without any permanent set is called the
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Which of the following types of reactors is the safest from operation point of view?
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Bracket supports are the most suitable for supporting __________ vessels.
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In the downcomer of a distillation column, the minimum recommended residence time is about __________ seconds.
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Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.
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In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes
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