4.38 Heat Tra nsfer in Stea m Heater. Water at an average of 70F is flowing in a 2-in. steel pipe, schedule 40 . Steam at 220F is condensing on the outside of the pipe. The convective coefficient for the water inside the pipe is h=500btu/hft2F and the condensing steam coefficient on the outside is h=1500. a. Calculate the heat loss per unit length of 1ft of pipe using resistances. b. Repeat, using the overall Ui based on the inside area Ai. c. Repeat, using U0. A15:Ans.(a)q=26710btu/h(7.828kW),(b)Ui=329.1btu/hft2F(1869W/m2K),(c)U0=286.4btu/hft2F(1626W/m2K)