Final answer:
The air leakage in cubic feet per minute (cfm) for a building with an infiltration rate of 0.6 ACH, a floor area of 2000 sq ft, and a ceiling height of 8 ft is 160 cfm, which is option D.
Step-by-step explanation:
To calculate the air leakage in cubic feet per minute (cfm) based on the infiltration rate of 0.6 air changes per hour (ACH), we should first find the volume of the building in cubic feet. Given the floor area is 2000 square feet and the ceiling height is 8 feet, the building volume is:
- Volume = floor area × ceiling height
- Volume = 2000 sq ft × 8 ft
- Volume = 16000 cubic feet
Next, we calculate the cfm by multiplying the volume by the ACH and then converting the hourly rate to a minute rate:
- CFM = Volume × ACH / 60 (to convert hours to minutes)
- CFM = 16000 cu ft × 0.6 ACH / 60
- CFM = 9600 cu ft per hour / 60
- CFM = 160 cfm
The air infiltration rate in cfm is, therefore, 160 cfm, which corresponds to option D.