Copper Tubes - Heat Carrying Capacities
Hot water heat carrying capacities in copper tubes type L.
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Copper tubes are often used in hot water heating systems, especially to connect heating elements like radiators, fan units and similar to the main pipe lines.
Download and print Copper Tubes - Heat Carrying Capacities diagram
The table below can be used to estimate hot water heat carrying capacity in copper tubes type L:
For full table - rotate the screen!
| Nominal tube size (inch) | Heat Carrying Capacity (103 Btu/hr) 1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Friction Head (10-3 inH2O/ft 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 temperature drop 20 oF (11 oC) in radiators and heating elements. For other temperature drops the values must be changed accordingly. With temperature drop 10 oF (5.5 oC) - multiply the capacities with 0.5.
- 1 in (inch) = 25.4 mm
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