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Insulated Copper Tubes - Heat Loss

Heat loss to surrounding air from insulated copper tubes.

The heat loss from insulated copper pipes or tubes to surrounding air are indicated below. The heat loss is based on temperature difference 55 oC (99 oF) with insulation thickness 25 mm (1 inch) and conductivity coefficient k = 0.043 W/m oC (0.3 Btu in/ft2hr oF).

Insulated Copper Tubes - Heat Loss
Nominal boreHeat Loss
(mm)(inches)(W/m)(Btu/hr ft)
22 3/4 8 8
28 1 10 10
42 1 1/2 11.5 12
54 2 14.5 15
67 2 1/2 16 17
76 3 19 20
  • 1 W = 3.4 Btu/hr
  • 1 ft (foot) = 0.3048 m

Insulated Copper Tubes - Heat Loss

Download and print Insulated Copper Tubes Heat Loss Chart

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