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Heat Loss from Oil Pipes

Heat loss in W/mK and Btu/hr ft ^oF from oil tubes ranging temperatures 10 - 38^oC (50 - 100^oF)

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The table below can be used to indicate the heat loss from oil pipes.

Heat Loss (W/mK) (Btu/hr ft ^oF)
Nominal bore mm	Oil Temperature
Nominal bore mm	up to 10 ^oC up to 50 ^oF	10 - 27 ^oC 50 - 80 ^oF	27 - 38 ^oC 80 - 100 ^oF
15	0.7 0.4	0.9 0.5	0.9 0.5
20	0.7 0.4	1.1 0.6	1.1 0.6
25	0.8 1.4	1.2 0.7	1.4 0.8
40	2.1 1.6	1.7 1.0	1.9 1.1
50	2.8 1.6	2.1 1.2	2.2 1.3

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