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Engineering ToolBox > Heat Emission from Pipes Submerged in Water
Heat emission from steam or water pipes submerged in water are indicated in the tables below:
| Temperature Difference between the Steam/Water in the Pipe and the Surrounding Water | Heat Transfer Rate to the Surrounding Water | ||
| (oF) | (oC) | (Btu/ft2 h oF) | (W/m2oC) |
| 50 | 28 | 100 - 225 | 570 - 1280 |
| 100 | 56 | 175 - 300 | 1000 - 1700 |
| 200 | 111 | 225 - 475 | 1300 - 2700 |
For practical applications - the heat transfer rates can roughly be set to:
| Type of Application | Heat Transfer Rate to the Surrounding Water | |
| (Btu/ft2 h oF) | (W/m2oC) | |
| Low pressure tank coils with natural circulation | 100 | 570 |
| High pressure tank coils with natural circulation | 200 | 1100 |
| Low pressure tank coils with forced circulation | 200 | 1100 |
| High pressure tank coils with forced circulation | 300 | 1700 |