Liquid propane at 1500 psia is heated from 100 to 175F as it flows through a 3/4-inch 12 -gauge copper tube ( 0.75 -inch outside diameter, 0.532 -inch inside diameter) at 7ft/s. The heating medium is saturated steam condensing at 220F on the outside of the tube. For simplicity assume that the heat transfer resistance of the tube wall and its thickness are negligible so that the tube inner surface temperature in contact with the propane can also be assumed as 220F. a. Determine the flow regime of the propane in the tube, i.e., is it laminar, transition or turbulent? b. What is the heat transfer rate (BTU/hr)? c. Estimate the heat transfer coefficient inside the pipe, hi, using the Sieder-Tate equation (do not ignore the viscosity correction). d. If the heat transfer coefficient for the steam condensing on the outside of the tube is 1200BTU/hrft2 F, estimate the overall heat transfer coefficient, U. e. What length of pipe is needed? DATA for propane at 140F (approximate average bulk propane temperature): =0.174lb/fthr;k=0.07BTU/hrftF;Cp=0.83BTU/lbF;=28.7lb/ft3 For propane at 220F,=0.151lb/fthr