Question

Industry A is low on budget and is used in the sugar industry. Industry B wants to invest in a good evaporator. They are needed for meat extracts.  Which evaporators will you suggest for each of them?

(a) Forced circulation evaporator, forced circulation evaporator

(b) Rising film evaporator forced circulation evaporator

(c) Forced circulation evaporator, rising film evaporator

(d) Rising film evaporator, rising film evaporator

I had been asked this question during a job interview.

I would like to ask this question from Unit Operations in portion Heat Transfer Equipment, Microwave Heating, Evaporation, Diffusion and Mass Transfer and Dehydration of Food Engineering

Answer 1

Correct choice is (b) Rising film evaporator forced circulation evaporator

Easy explanation: Rising film evaporator is a low cost evaporator. It is also a single pass; hence heat sensitive sugars can be treated. Forced circulation evaporators are slightly more expensive. Also, they can be used for viscous materials like meat extracts.