unit for Cp is btu/lb x F

Given the following for a simple, countercurrent exchanger: Stream 1 Stream 2 Oil Water Tin = 180 F tin = 40 F Tout = 167 F tout = unknown SpGr = 0.85 SpGr = 1 cp = 0.8 btu/#-F cp = 1 btu/#-F flow = 23 gpm flow = 10 gpm What is the water outlet temperature, F? 63.9 x 60.332 What is the LMTD? i X 09 123.29766851012 00 If U = 52 btu/ft2-hr-F, What is the required exchanger area, ft2? 15.855936479768 Check