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Which of the following evaporator cannot be used for milk?

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+1 vote
in Food Processing Unit Operations by (110k points)
Which of the following evaporator cannot be used for milk?

(a) Scraped surface evaporators

(b) Fluidized bed evaporators

(c) Plate-and-frame type evaporators

(d) Batch Pan

I got this question in a job interview.

Query is from Evaporation of Heat Sensitive Materials topic in section Evaporation of Food Processing Unit Operations

1 Answer

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Best answer
The correct option is (b) Fluidized bed evaporators

Explanation: Batch pan is the oldest method which evaporates the milk where the heat transfer per unit volume is small requiring long residence times. Plate-and-frame type evaporators and scraped surface evaporators are commonly used in dairy industry where heat transfer per unit volume is largeand has short residence times.

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