BPI Building Analyst Questions and Answers 100% Correct

BPI Building Analyst Questions and Answers 100% Correct Absolute humidity - Air moisture content expressed in grains (or pounds) of water vapor per pound of dry air. Absorptance - The ratio of a solar energy absorbed to incident solar. Also called absorptivity. Absorption - A solid material's ability to draw in and hold liquid or gas. Air barrier - Any part of the building shell that offers resistance to air leakage. The air barrier is effective if it stops most air leakage. The primary air barrier is the most effective of a series of air barriers. Air changes at 50 pascals (ACH50) - The number of times that the complete volume of a home is exchanged for outside air when a blower door depressurizes the home to 50 pascals. Air conditioning - Cooling buildings with a refrigeration system. More generally means both heating and cooling