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Heat Carrying Capacity of Copper Tube

Hot water heat carrying capacity of copper tube type L

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Copper tubes is common in heating systems, especially connecting heating elements as radiators, fan units and similar elements.

Heat Carrying Capacity Copper Tube

The table below can be used to estimate heat carrying capacity of copper tubes type L:

Hot Water Heat Carrying Capacity of Type L Copper Tube (103 Btu per hour) 1)
Nominal tube size (inch) Friction Head (milli-inches per foot of tube)
920 600 480 360 300 240 180 150 120 90 75 60
3/8 10 9 8 7 6 5.5 4.5 4 3.5 3 3 2.5
1/2 20 18 16 13.5 12 11 9 8 7 6 5 5
5/8 36 30 26 22 20 18 15 13 12 10 9 8
3/4 51 46 40 34 31 28 23 21 18 15 14 12
1 104 94 82 70 63 56 47 42 37 32 28 25
1 1/4 185 169 149 125 112 100 84 75 66 56 50 44
1 1/2 300 270 235 200 180 160 134 120 105 90 81 71
2 625 560 495 420 375 335 258 250 200 188 170 150
2 1/2 1130 1010 890 750 680 600 500 450 395 335 305 270
3 1840 1650 1450 1210 1100 980 820 740 650 550 490 420
3 1/2 2750 2480 2170 1840 1650 1450 1210 1100 980 820 740 650
4 3900 3500 3100 2600 2350 2090 1760 1580 1390 1180 1080 950

1) The table is designed for a temperature of 20 oF drop in radiators and heating elements. For other temperature drops the values must be changed accordingly. With a temperature drop of 10 oF the capacities must be multiplied with 0.5.

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Related Topics

  • Fluid Flow and Pressure Drop - Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more
  • Heating - Heating systems - capacity and design of boilers, pipelines, heat exchangers, expansion systems and more

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