A 4m high and 6m wide wall consists of a long 18cm x 30cm cross section of horizontal bricks (k = 0.72 W/mK) separated by 3cm thick plaster layers (k=0.22 W/mK). There are also 2c thick plaster layers on each side of the wall, and a 2cm thick rigid foam (k=0.026 W/mK) on the inner side of the wall. The indoor and outdoor temperatures are 22°C and -4°C, and the convection heat transfer coefficients on the inner and the outer sides are h1= 10 W/m2K and h2= 20 W/m2K, respectively. Assuming one dimensional heat transfer and disregarding radiation, determine the rate of heat transfer through the wall.

A 4m high and 6m wide wall consists of a long 18cm x 30cm cross section of horizontal bricks (k = 0.72 W/mK) separated by 3cm thick plaster layers (k=0.22 W/mK). There are also 2c thick plaster layers on each side of the wall, and a 2cm thick rigid foam (k=0.026 W/mK) on the inner side of the wall. The indoor and outdoor temperatures are 22°C and -4°C, and the convection heat transfer coefficients on the inner and the outer sides are h1= 10 W/m2K and h2= 20 W/m2K, respectively. Assuming one dimensional heat transfer and disregarding radiation, determine the rate of heat transfer through the wall.