1. A gas at 500 K is flowing inside a -in schedule 40 steel pipe. A cork board insulation of 25 mm thickness covers the steel pipe. The convective heat-transfer coefficient of the gas inside the pipe is 26.5 W/m²K and the convective coefficient outside the cork board is 16.5 W/m²K. The surrounding temperature is at 298.15 K. Calculate the heat loss per unit length of 1 m of pipe using resistances, and compute for the U_o based on the outside area A_o.