A plexiglass pipe has an inside diameter of 100 mm, an outside diameter of 140 mm,and a 10-mm thick layer of foam insulation is bonded to the outer surface of

the pipe.The temperature of the cold fluid in the pipe is 2°C and the heat transfer coefficient at the inner surface of the pipe is 50 W/m2. K. The outer surface of the foam insulation is exposed to a convection environment with T, = 37°C and h = 12 W/m2 . K. a) Find the rate of heat transfer to the water in the pipe (answer: 25.70 W/m). b) Find the temperatures at the inner and outer surfaces of the insulation (answers:11.7°C and 32.7°C).