Question

What is the steam economy of single effect evaporator?

(a) 0.8

(b) 1.3

(c) 10

(d) 5.6

The question was asked in quiz.

This intriguing question comes from Single and Multiple Effect Evaporators topic in section Evaporation of Food Processing Unit Operations

Answer 1

Correct choice is (a) 0.8

Explanation: Steam economy of the evaporator is defined as the number kilogram of water vaporized from all the effects per kilogram of steam used. The steam economy of single effect evaporator is about 0.8 (<1).