3 m high and 5 m wide wall consists of 16 cm × 22 cm cross-section horizontal bricks ( k = 0 7.2 W/m. K ) K separated by 3 cm thick mortar layers (k = 0.25 W/m. K) The brick wall also consists of 2 cm thick plaster (k = 0.22 W/m. K) layers on each side of brick and 3 cm thick rigid foam (k = 0.026 W/m. K) on the inner side of the wall as shown in Fig. 3.21(a). The indoor and outdoor temperatures are 55 and 25°C and convection heat transfer coefficients on inner and outer sides 10 W/m^2.W/m 2
.K and 25 W/m^2.KW/m
2
.K, respectively. Assume one dimensional heat transfer and disregard radiation, determine the rate of heat transfer through the wall.