The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.
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Chemical Engineering · all questionsProcess Equipment And Plant Design
Process Equipment And Plant Design
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Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as
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In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to
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The retention time of material in a rotary dryer depends upon its
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In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms.
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For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness?
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Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger
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In shell and tube heat exchangers, straight tie rods are used to
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In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.
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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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The normal range of velocity of water in pipes is __________ m/sec.
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To avoid the tearing off the plate of an edge, the margin (i.e., the minimum distance from the centre of the rivet hole to the nearest edge of the plate) should be equal to
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In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be
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The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)
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Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always
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Removable connection of tubes to tube sheet is called
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An underdesigned steam trap will
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The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is
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Thin spherical shells subjected to internal pressure, develop __________ stresses.
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In chemical process equipments, the conical bottom heads used, usually has an apex angle of
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