Question

In the expression for finding the rate of flow of air arising due to the difference in temperature of outside and inside, the coefficient of effectiveness for general conditions is taken as ___________

(a) 0.35

(b) 0.65

(c) 0.85

(d) 1.5

The question was asked by my school teacher while I was bunking the class.

This intriguing question originated from Air Conditioning topic in division Acoustics and Ventilation of Construction & Building Materials

Answer 1

Right option is (b) 0.65

Easiest explanation: In the expression for finding the rate of flow of air arising due to the difference in temperature of outside and inside, coefficient of effectiveness for general conditions is taken as 0.65. However, it is taken as 0.50 in the case of unfavorable conditions.