Dry bulb temperature and wet bulb temperature is 25°C each, and velocity of air passing over human body is 6 m/min. If velocity increases to 20 m/min, then which one of the following is correct?
Option (A)
The effective temperature decreases
Option (B)
The effective temperature remains the same
The effective temperature increases
The change in effective temperature cannot be estimated with the given information
Correct Option:
Question Solution:
Higher air velocities require less difference between out-door effective temperature and inside effective temperature. Air velocity in the air conditioned system should be low enough to avoid the objectionable noise and drafty feeling and it should be high enough to carry out the heat from the human bodies.