Q2: Hollow pipe with OD12cm,ID10cm,K=35W/mC is insulated from the outer surface with 0.5cm thick, and K=0.015W/mC. The pipe is subjected to air at 30C and h=33W/m2C, and the pipe is loaded with internal heat generator 10000W/m3. i-Will the heat transfer increase or decrease by adding insulation? ii- Plot the temperature distribution along the radial wall of the hollow pipe wall. (35 mark)