Question

A 2 ft high x 6 ft wide double-glazed window faces southwest. The window has a frame with width of 1.25 in. around the outside edge. The top of the window has a 1.5 ft overhang that extends a great distance on each side of the window. The incident angle is 60 deg, the incident direct irradiation is 120 Btu/hr-ft, and the incident diffuse irradiation is 50 Btu/hr-ft. 1- Compute the shaded area of the frame and glazing on July 21 at 3:00 P.M. solar time at 40 deg N latitude. 2- Find the solar heat gain of the window. Assume what ever you like? 2- For 3: solar time,on July 21, in Qassim University, a 2 ft wide and 4.5 ft high window faces south. he window has a 1.5 in. wide aluminum frame with a thermal break utilizing metal spacers. The glazing system is 21c in Table -3. There is no interior or exterior shading. Calculate the total solar heat gain.

Answer 1

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