Question

P3. A 2-inch outside diameter (OD) by 1.5 -inch inside diameter (iD) wrought iron water line is buried into the ground. If water flow through the pipe is such that the inside surface of the pipe is 60°F and the outer surface is 50°F where it is surrounded by earth, determine the heat loss pe unit length of pipe, and the temperature distribution through the walls of the pipe. Also plot the temperature as function of the radius of the pipe

Answer 1

(7-1) Kwrougat 29.5 Bt tt Tren (21-5) (60-50) =6443 Bty A.ft the pipe mporatue disthibudion tsouph found hem the eguation dr The dT = Tigraing Ta) TTK wing the boundary ondition that T-60F at =0.75 inchy In(o.s) 27TK 60- CI T) 60- 27K This equation demonstaty the non linear femperatue distibudien thaough the pipe . heeult ,a due to the radial heat that tanyer throyh the pipe