Copper Tubes - Heat Loss

Heat loss from uninsulated copper tubes at various temperature differences between tube and air

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

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 - 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
  • Steam - Heat Loss and Insulation - Steam and condensate pipes - heat loss uninsulated and insulated pipes, insulation thickness and more

Related Documents

Tag Search

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  • es: tuberías de tuberías de cobre tubo de aislamiento pérdida de calor
  • de: Rohrleitungen Rohrkupferwärmeverlust Isolierung

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