Ethylene glycol coolant at an average temperature of -30C flows in a galvanized iron pipe (KGI = 30 W/m. C). The inner and outer radius are 14 cm and 16 cm, respectively. The pipe is first insulated with 2.5 cm thick magnesia insulation (km = 0.08 W/m. C) and then on the outside with 0.5 cm thick calcium silicate (kcs=0.05 W/m. C). The outer surface temperature of the calcium silicate is 30C and the heat transfer coefficient of the ethylene glycol solutions is 32 W/m. C. Assuming 1-dimensional and steady state heat transfer, sketch the thermal resistance network diagram and then determine: (i) (ii) the rate of heat loss for a 12-meter length pipe, and the temperature at each surface interface. Ethylene glycol T= -30 Figure Q2 GI