Process Equipment and Plant Design
Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation

Does not affect the capacity
Increases economy
Both B & C
Increases capacity

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.

Steam is fed to the shell, whereas the liquor is filled inside the tube
None of these
Liquor level is maintained at l/3rd to 1/2 of the height of the tube
Tube dia is 3-6 cms, while tube length in 3-6 metres

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