Q161
Open questionFor a given fluid, as the pipe diameter increases, the pumping cost
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Chemical Engineering · all questionsProcess Equipment And Plant Design
Process Equipment And Plant Design
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Q162
Open questionCylinderical shell thickness of rotary drier is generally __________ mm.
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Q163
Open questionA cylinderical pressure vessel of volume 6 πm3 has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125 N/mm2 and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to
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Q164
Open questionThe distance between the top of the slots and the liquid surface when the static liquid is just ready to flow over the overflow weir is called
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Q165
Open questionLiquid gradient over the tray results due to the
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Q166
Open questionLarge process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials like stainless steel, aluminium, nickel & its alloys, copper & its alloys and titanium. The cladding thickness is generally about __________ percent of the total thickness.
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Q167
Open questionHeat transfer co-efficient, hG(Kcal/hr.m2.°C) and mass velocity of air, G (kg/hr.m2) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176 G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to
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Q168
Open questionIn inclined long tube vertical evaporators, the tubes are inclined at an angle of
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Q169
Open questionWhich of the following packing materials provides for maximum mass transfer?
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Q170
Open questionIn a multipass shell and tube heat exchanger, the problem of differential expansion between the shell and tube passes is taken care of by using a
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Q171
Open questionWith increase in the number of shell passes, the value of FT
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Q172
Open questionPick out the wrong statement about the design of a sieve plate column.
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Q173
Open questionThe design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.
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Q174
Open questionNormally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around
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Q175
Open questionFor given number of passes, pitch & tube diameter, the maximum number of tubes that can be accommodated in a shell of tripled inside diameter will be __________ times.
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Q176
Open questionPonchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele's method, this method
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Q177
Open questionPick out the wrong statement.
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Q178
Open questionSmaller sized packings are generally dumped to the packed columns, and the large ones of size greater than __________ mm are stacked individually, which provides better control over bed porosity and offers lower gas pressure drop.
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Q179
Open questionIn a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon
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Q180
Open questionFriction factor for turbulent flow in a new pipe is given by
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