A single-family residence has an estimated indoor area of 350 m2 and an average floor-to-ceiling height of 3 m. The local building code requires that residential houses be ventilated at a minimum air...

A single-family residence has an estimated indoor area of 350 m2 and an average floor-to-ceiling height of 3 m. The local building code requires that residential houses be ventilated at a minimum air change rate of 0.3 h−1 , which means that 30% of the interior volume must be ventilated every hour. (a) If ventilation is to be done by an air conditioning (AC) system, determine the minimum capacity of the AC system in units of m3 /sec. (b) If the air intake is to be a single square vent and the maximum intake velocity to the vent is 4.5 m/s, what are the minimum dimensions of the vent?