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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.

Copper Tube - Heat Carrying Capacity

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!

Hot Water Heat Carrying Capacity in Type L Copper Tube (10³Btu/hr) ¹⁾
Nominal tube size (inch)	Friction Head (10^-3 inH2O/ft of tube)
Nominal tube size (inch)	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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Related Topics

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

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