Question

What is heat economizing?

(a) The total cost of the heat exchanger and its maintenance cost

(b) Interchange heat among the hot and cold fluids to conserve heat energy.

(c) The capital cost of the heat exchanger unit

(d) Amount of heat produced per day

I have been asked this question in class test.

I want to ask this question from Heat Transfer Applications in chapter Heat Transfer Applications of Food Processing Unit Operations

Answer 1

Right option is (b) Interchange heat among the hot and cold fluids to conserve heat energy.

The explanation: Heat economizing can be defined as the Interchange heat among the hot and cold fluids to conserve heat energy. The heat from the hot liquid is transferred to the cool liquid thus reducing the overall cost of the heating mechanism. This is especially achieved when the arrangement is in counter flow mechanism.