Steam at 100 psia, sat vapor is in a pipe. The pipe is schedule 40 steel with a wall thickness of 1/8 inch and a length of 100 ft. The outside air temperature is 40 degrees Fahrenheit. The mass flow of steam is 4,000 lb/hr. ho= 6 Btu/hr*ft^2*F, hi= 1000 Btu/hr*ft^2*F. x= 1.0.
A) draw thermal circuit of heat flow from center of pipe to Tout. Label all resistors in the thermal circuit.
B) How much heat is lost from pipe?
C) What is average velocity of steam in ft/s?