Heat Emission from Pipes Submerged in Water

Heat transmission from steam or water heating pipes submerged in water - assisted (forced) and natural circulation

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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/m^2oC)
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
Type of Application	(Btu/ft² h ^oF)	(W/m^2oC)
Tank coils with low pressure steam, natural circulation in the tank	100	570
Tank coils with high pressure steam, natural circulation in the tank	200	1100
Tank coils with low pressure steam, forced circulation in the tank	200	1100
Tank coils with high pressure steam, forced circulation in the tank	300	1700

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