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# Copper Tubes - Heat Losses

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

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

Copper Tubes - Heat Losses
Nominal boreHeat Loss
(W/m)(Btu/hr ft)
Temperature difference (oC)Temperature difference (oF)
(mm)(inches)223855406899
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

## Related Topics

• ### Heat Loss and Insulation

Heat loss from pipes, tubes and tanks - with and without insulation. Use of materials lke foam, fiberglass, rockwool and more.
• ### Insulation and Heat Loss from Steam and Condesate Pipe Lines

Heat loss from uninsulated and insulated steam and condensate pipes and tanks. Calculate insulation thicknesses.
• ### Piping Systems

Calculate dimensions of pipes and tubes. Pressure drop calculations and head loss charts. Use of different piping materials. Insulation of pipes and tubes and heat loss diagrams.
• ### Water Systems

Design of hot and cold water service and utility systems with properties, capacities, sizing of pipe lines 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 - 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.
• ### Insulated Copper Tubes - Heat Loss

Heat loss to surrounding air from insulated copper tubes.
• ### 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 pipesĀ - ranging insulation thickness 10 to 80 mm and temperature differences 20 to 180 degC.
• ### Pipes - Insulated Heat Loss Diagrams

Heat loss (W/ft) diagrams for 1/2 to 6 inches insulated pipesĀ - ranging insulation thickness 0.5 to 4 inches and temperature differences 50 to 350 degF.
• ### 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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## Citation

• The Engineering ToolBox (2003). Copper Tubes - Heat Losses. [online] Available at: https://www.engineeringtoolbox.com/copper-pipes-heat-loss-d_51.html [Accessed Day Month Year].

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6.3.17

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