1.

__________ is the total mass of water vaporized per unit mass of steam input to the evaporator.(a) Efficiency of evaporator(b) Economy of evaporator(c) Rate of evaporator(d) Capacity of evaporatorI had been asked this question in an international level competition.The query is from Evaporator in portion Building Blocks of Dairy Processing of Dairy Engineering

Answer»

The correct ANSWER is (b) ECONOMY of evaporator

For explanation I would say: Capacity is defined as the number of kilograms of water vaporized per hour. Economy is the number of kilograms vaporized per kilogram of steam FED to the unit. In a single effect evaporator the economy is approximately always LESS than 1, but in multiple-effect equipment it may be CONSIDERABLY greater.



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