Air Exchange Rate
The rate at which outside air replaces indoor air in a given space.
The air exchange rate is:
Where
n = air change rate per hour [h-1]
q = fresh air flow through the room [m3s-1]
V = volume of the room [m3]
A minimum value of 4 is recommended. Note that local regulations may stipulate a value depending on the use of the room.
See also: Flow Rate.
Subjects: Civil Engineering