Infiltration Measures
The infiltration rate is the volumetric flow rate of outside air into a building, typically in cubic feet per minute (CFM) or liters per second (LPS). The air exchange rate, (I), is the number of interior volume air changes that occur per hour, and has units of 1/h. The air exchange rate is also known as air changes per hour (ACHs).
ACH can be calculated by multiplying the building's CFM by 60, and then dividing by the building volume. (CFM x 60)/volume
Read more about this topic: Infiltration (HVAC)
Famous quotes containing the word measures:
“I hear America singing, the varied carols I hear,
Those of mechanics, each one singing his as it should be blithe and
strong,
The carpenter singing his as he measures his plank or beam,
The mason singing his as he makes ready for work, or leaves off
work,”
—Walt Whitman (1819–1892)