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Copper Tubes - Heat Loss

Heat loss from uninsulated copper tubes vs. temperature differences between tube and air.

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Values from the table below can be used to indicate the heat losses from uninsulated copper pipes:

Nominal bore		Heat Loss
		(W/m)			(Btu/hr ft)
		Temperature difference (^oC)			Temperature difference (^oF)
(mm)	(inches)	22	38	55	40	68	99
15	1/2	21	32	45	22	34	47
22	3/4	28	43	60	29	45	53
28	1	34	53	76	36	56	79
35	1 1/4	41	64	89	43	67	93
42	1 1/2	47	74	104	49	77	108
54	2	59	93	131	62	97	136
67	2 1/2	71	111	156	74	116	162
76	3	83	129	181	87	135	189
108	4	107	165	232	111	172	241

1 W = 3.4 Btu/hr
1 ft (foot) = 0.3048 m

Copper Tubes - Uninsulated heat loss

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Related Topics

Heat Loss and Insulation - Heat loss from pipes, tubes and tanks - with and without insulation - foam, fiberglass, rockwool and more.
Water Systems - Hot and cold water service systems - design properties, capacities, sizing and more.
Piping Systems - Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams.
Heat Loss and Insulation - Steam and condensate pipes - heat loss uninsulated and insulated pipes, insulation thickness and more.

Related Documents

BS 2871 Copper Tubes Table X, Y and Z - Working Pressures vs. Size - Working pressures of metric sized copper tubes according the BS (British Standard) 2871.
Copper Tubes - Heat Carrying Capacities - Hot water heat carrying capacities in copper tubes type L.
Copper Tubes - Insulated Heat Loss - Heat loss to surrounding air from insulated copper tubes.
Copper Tubes - Pressure Loss vs. Water Flow - Water flow and pressure loss (psi/ft) due to friction in copper tubes ASTM B88 Types K, L and M.
Copper Tubes - Uninsulated Heat Losses - Heat loss from uninsulated copper pipes - dimensions ranging 1/2 - 4 inches.
Copper Tubes Type K - Dimensions and Physical Characteristics - Physical characteristics of copper tubes ASTM B 88 type K.
Pipes - Bare Surface Heat Loss - Heat loss vs. surface temperature.
Pipes - Insulated Heat Loss Diagrams - Heat loss (W/m) from 1/2 to 6 inches insulated pipes - ranging insulation thickness 10 to 80 mm and temperature differences 20 to 180 ^oC.
Pipes - Insulated Heat Loss Diagrams - Heat loss (W/ft) diagrams for 1/2 to 6 inches insulated pipes - ranging insulation thickness 0.5 to 4 inches and temperature differences 50 to 350 ^oF.
Pipes and Cylinders - Conductive Heat Losses - Conductive heat losses through cylinder or pipe walls.
Pipes Submerged in Water - Heat Emission - Heat emision from steam or water heating pipes submerged in water - assisted (forced) or natural circulation.
Piping - Recommended Insulation Thickness - Recommended insulation thickness for heating systems like hot water and low, medium or high pressure steam systems.
Steam Pipes - Heat Losses - The amount of condensate generated in a steam pipe depends on the heat loss from the pipe to the surroundings.
Steam Pipes - Heat Losses (W/m) - Heat losses from un-insulated steam pipes.
Steel Pipes - Heat Loss Diagram - Heat loss from steel pipes and tubes - dimensions 1/2 to 12 inches.

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