Consider the double-glazed window described in problem P9.7. The overall heat transfer coefficients for the outside air film, the air gap between the glasses, and the inside air film are respectively...

Consider the double-glazed window described in problem P9.7. The overall heat transfer coefficients for the outside air film, the air gap between the glasses, and the inside air film are respectively 28 Wmí2 Kí1 , 6.8 Wmí2 Kí1 and 7.8 Wmí2 Kí1 . The inside and outside air temperatures are 22°C and 32°C respectively. Calculate (i) solar heat gain coefficient (SHGC) for the direct beam, and (ii) the total rate of energy transfer per unit area into the inside space if the direct beam radiation intensity is 520 Wmí2 .