Consider the triple-glazed window described in problem P9.8. The following pertinent overall heat transfer coefficients have been estimated: hi = 8.0 Wmí2 Kí1 , h12 = 6 Wmí2 Kí1 , h23 = 7 Wmí2 Kí1 ,...

Consider the triple-glazed window described in problem P9.8. The following pertinent overall heat transfer coefficients have been estimated: hi = 8.0 Wmí2 Kí1 , h12 = 6 Wmí2 Kí1 , h23 = 7 Wmí2 Kí1 , ho = 28 Wm2 Kí1 , where subscript 1 denotes the innermost glazing. The inside and outside air temperatures are 21°C and 33°C respectively. For the conditions stated in problem P9.8, calculate (i) the solar heat gain coefficient (SHGC) for direct beam radiation, and (ii) the total energy transfer rate per unit area into the inside space if the direct beam radiation intensity is 480 Wmí2 .