Chemical Engineering :: Mass Transfer
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The cooling effect in a cooling tower can not be increased by
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The value of NA/(NA + NB) for steady state molecular diffusion of gas 'A' through non-diffusing gas 'B' is
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The humid volume may be increased by increasing the
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Pick out the wrong statement
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When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.
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Large scale drying of wheat is done in a __________ dryer.
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Azeotropic distillation is employed to separate
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The drying time between fixed moisture content within diffusion controlled 'falling rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid )
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Use of natural draft cooling tower is practised, when the air has low
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Pressure drop through plate tower as compared to that through packed tower, for the same duty will be
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A.
Co-current absorbers are usually used, when the gas to be dissolved in the liquid is a pure substance.
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B.
In case of gas absorption, HETP is equal to HTU, when both the operating line & the equilibrium lines are parallel.
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C.
Hatta number is important in case of gas absorption with chemical reaction.
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D.
In actual practice, absorption is an en-dothermic process, while stripping is an exothermic process.
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