The window is of tight-fit and weather stripped. The wall is assumed to be non-penetrable. In summer, a wind of 10 m/s blows the window at an incident angle of 45 degree. Assume the draft coefficient is 0.8. (a)Estimate the total pressure across the window; (b)Estimate the infiltration (or exfiltration) flow rate; (c) Estimate the heat and moisture change by the infiltration (or exfiltration); (d)If one of the windows is completely broken, what is the heat transfer due to infiltration (or exfiltration)?