A top-level room in a high-rise building (L/W of 1) has a double-hung window (2m by 4m) of average fit that is not weather stripped. In summer, a wind of 10 m/s blows the window at an incident angle of 30 degree. Assume the room is located 30 m above the neutral pressure level and the inside air temperature is maintained at 24 C with RH (relative humidity) of 50 percent. Outside air is of 35 C with RH of 70 percent. Assume that the draft coefficient is 0.8.
a) Estimate the total pressure across the window.
b) Estimate the infiltration flow rate if the window is closed.
c) Estimate the heat and moisture change by the infiltration.
d) Estimate the infiltration flow rate if the window is partially open (assuming the window open area is 2 meter squared). +