Part 2-3 Ventilation Rate of the Home

Assuming standard air exchange for homes, the ventilation rate was calculated as follows:

Desired air exchange rate = 0.35
8 ft ceilings

Ventilation rate = Volume*air exchange rate = (1000ft*8ft)(0.35/hr)(1hr/60min) = 46.67 cfm

or Q=mdot/density of air = (3.53 lb/min)/(0.0757lb/ft^3) @ 65 degrees F =  46.63 cfm