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Heat Loss Costs $$$$$
Leaving One Four Inch Valve Uninsulated Is Comparable To
8½ Feet Of Exposed Piping |
Heat Loss Calculation For Thermal Blankets
Heat Losses Through Uninsulated Indoor Valves
Based On A.S.E.R.A.E. Heat Transfer Figures
Heat Loss Analysis
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| Steam Pressure (P.S.I.) |
150 |
80 |
40 |
| Surface Area of Equipment |
10 sq. ft. |
10 sq. ft. |
10 sq. ft. |
| Annual Operation Hours |
8760 |
8760 |
8760 |
| Cost MM/BTU |
$ 13.70 |
$ 13.70 |
$ 13.70 |
| Annual Heat Loss (million btu's) |
102.23 |
87.45 |
50.97 |
| Annual Heat Saved (million btu's) |
95.31 |
92.78 |
47.01 |
| Total First Year Savings |
$ 1,305.73 |
$ 997.06 |
$ 644.10 |
| Total Insulation Cost |
$ 300.00 |
$ 300.00 |
$ 300.00 |
| Total Labor Cost |
$ 22.50 |
$ 22.50 |
$ 22.50 |
| Payback Days - |
90 |
118 |
183 |
Assumed 80 degree ambient, year round operation.
$ 13.70/1000# steam cost.
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