Consider a 0.8-m-high and 1.5-m-wide glass window with a thickness of 8 mm and a thermal conductivity of k = 0.78 W/m °C. Determine the the temperature of its inner surface for a day during which the room is maintained at 19°C while the temperature of the outdoors is -9°C. Take the heat transfer coefficients on the inner and outer surfaces of the window to be h1 = 10 W/m2 °C and h2 = 40 W/m2 °C, which includes the effects of radiation.