[Heat Lost From a 6-Inch OD Steam Line]
Analyze heat lost from a 6-inch OD steam line. The line carries high-pressure steam throughout the factory at 400 psi, 400oF. Specify type and thickness for insulating the steam line. Compare the cost of energy lost with and without pipe insulation. You can assume steam is generated 8000 hours/year. Compare energy cost reductions based upon a gas fired boiler and a fuel oil fired boiler. Assume boiler energy input at 6.5(106) Btu/hr.
Given outer diameter OD = 6-inch, pressure = 400 psi, steam temperature = 400oF.
The following assumptions are made;
The steam pipe is made of mild steel