A triple-glazed window has three glass sheets, each of thickness 3 mm and thermal conductivity 0.85 Wmí1 Kí1 . The transmittance and reflectance of each glass sheet for beam radiation incident at 50°...

A triple-glazed window has three glass sheets, each of thickness 3 mm and thermal conductivity 0.85 Wmí1 Kí1 . The transmittance and reflectance of each glass sheet for beam radiation incident at 50° are 0.8 and 0.1 respectively. Calculate the overall transmittance of the window and the fraction of radiation absorbed in each glass sheet.