(5-27) The walls construction of a room, whose dimensions are 6.5 m x 4.5 m x 3.0 m high, is as shown. The room has two regular glass windows each 2.0 m x 1.0 m high and a wooden door of 1.5 m² area. The outside and inside temperatures are 5 and 20°C, respectively. The inside and outside convection heat transfer coefficients are 5 and 20 W/m²K, respectively. The thermal conductivities of the glass and wood material are 0.78 and 0.17 W/m-K, respectively. The glass thickness is 6 mm and that for the door is 25 mm. The heat loss rate through floor and ceiling is neglected. Calculate the heating load of the room. h W/m "C Thickness 2.2 0.07 m 1.75 0.20 m 0.03 0.05 m 0.90 0.07 m 1.20 0.02 m Layer O O O O Hard Stone Concrete Polystyrene Hollow Blocks Cement Plaster PROBLEM (5-27) VAAAAAAAAA