0.05m Q1: A steel tube (k 15 W/m K) with 5 cm inner diameter and 7.6 cm outer diameter is covered with an insulation (k = 0.2 W/m K), 0.2 cm thick. A hot gas at 330°C flows through the tube with hi-400 W/m²K. The outer surface of the insulation is exposed to air at 30°C with ho 60W/m2K. Calculate a- The rate of heat loss from the 10 m long tube. b- The temperature drop resulting from each thermal resistances. e- The temperature at the inner surface of the tube and outer surface of the insulation. d- The temperature at interface between the tube and the insulation.