Question

The maximum rate of air change is __________

(a) 30 per min

(b) 30 per hour

(c) 60 per min

(d) 60 per hour

The question was posed to me during an interview for a job.

My question is taken from Functional Requirements of Ventilation System topic in chapter Acoustics and Ventilation of Construction & Building Materials

Answer 1

Correct choice is (d) 60 per hour

The best I can explain: Air change per hour is defined as the volume of outside air allowed in a room per hour as compared to the volume of the room. The maximum rate of air change is 60 per hour while the minimum rate of air change is 1 per hour.