# Working fluid at 35 F flows in a 2 in pipe. Ambient temperature is 125 F. The pipe is covered with 2

Working fluid at 35 F flows in a 2 in pipe. Ambient

temperature is 125 F. The pipe is covered with 2 layers of insulation each

having a thickness of 5 in with k= = 0.015 Btu/ft·h·F and k2 = 0.04

Btu/ft·h·F. The pipe is 0.2 in think with k = 8 Btu/ft h F. Find the rate of

heat transfer to the working fluid in 100 ft of pipe. Assume ha =

200 Btu/ft2 ·h·F and hb = 15 Btu/ft2 ·h·F.