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.

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Distillation

Distillation is a process/technique to separate more volatile components from less volatile components using the principle of relative volatility. In chemical engineering, distillation is one of the most common and important topics that is involved in almost every industry and process.