Q361
Open questionThe number of kg vaporised per kg of steam fed to the evaporator is defined as
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Chemical Engineering · all questionsHeat Transfer
Heat Transfer
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Q362
Open questionCirculation pump is located below the evaporater to
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Q363
Open questionDropwise condensation occurs on __________ surfaces.
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Q364
Open questionThe absorptivity of a body is equal to its emissivity
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Q365
Open question__________ equation relates the thermal conductivity of a solid to its temperature.
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Q366
Open questionIn case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is
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Q367
Open questionThermal conductivity of a conducting solid material depends upon its
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Q368
Open questionA 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m2.°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be
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Q369
Open questionDropwise condensation of steam on cooling surface is promoted
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Q370
Open questionCrystallisation of solids from a homogeneous solution is a/an __________ process.
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Q371
Open questionReynold's analogy states that (where, St = Stanton number, f = friction factor)
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Q372
Open questionWhich is the most suitable for the concentration of foamy & frothy liquors?
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Q373
Open questionPick out the wrong statement.
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Q374
Open questionBoiling point of a solution according to Duhring's rule is a linear function of the __________ of water.
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Q375
Open questionArithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is
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Q376
Open questionIn Fourier's law, the proportionality constant is called the
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Q377
Open questionWhich area is used in case of heat flow by conduction through a cylinder?
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Q378
Open question__________ heat exchanger is used for chilling oil to be dewaxed.
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Q379
Open questionFor concentrating an aqueous solution of a material like anhydrous Na2SO4, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator.
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Q380
Open questionThe purpose of providing a 'catchall' in the vapor line of an evaporator is to
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