Finned Tube Radiators - Data Sheet

DATA SHEET - METRIC						OUTPUTS - WATTS PER METRE RUN. STILL AIR 20OC
Tube Nominal Bore mm	Fin Width mm	Dia Over Fins mm	Fin Pitch mm	Weight Per Foot (kg)	Heating Surface m2 per m	MEAN TEMPERATURE OF WATER OC									STEAM PRESSURE P.S.I.G
Tube Nominal Bore mm	Fin Width mm	Dia Over Fins mm	Fin Pitch mm	Weight Per Foot (kg)	Heating Surface m2 per m	60	65	70	75	80	85	90	95	100	0.2	0.5	1.0	1.5	2.0	2.5	3.0	4.0	5.0	6.0
25	16	65	10	3.81	0.789	165	197	229	259	292	326	357	392	426	453	509	577	632	682	726	764	832	884	936
25	16	65	13	3.46	0.618	149	175	203	231	259	288	320	351	380	406	456	519	569	615	653	687	750	797	843
32	16	73	10	5.06	0.908	212	257	298	341	384	429	473	517	561	597	672	759	833	895	951	999	1086	1151	1218
32	16	73	13	4.58	0.713	202	236	274	310	350	387	428	466	509	540	606	687	753	812	865	908	988	1048	1107
32	16	92	10	6.41	1.691	283	328	373	416	461	505	551	600	648	697	766	863	946	1021	1090	1146	1254	1338	1409
32	16	92	14	5.37	1.170	223	265	306	347	390	433	479	523	570	618	688	782	867	939	1011	1066	1171	1257	1329
40	25.4	98	10	7.18	1.785	312	358	405	452	501	548	599	650	702	758	832	947	1026	1105	1178	1238	1351	1442	1519
40	25.4	98	14	6.04	1.240	246	289	336	381	425	472	519	567	618	673	746	850	941	1021	1097	1159	1278	1370	1446
50	25.4	108	10	9.18	2.050	360	413	468	522	577	631	691	748	808	870	959	1077	1179	1269	1363	1426	1563	1662	1747
			14	7.87	1.426	288	337	388	442	496	549	605	662	721	782	865	985	1088	1180	1267	1336	1465	1571	1663
			19	7.22	1.118	247	289	336	380	426	473	519	569	620	673	754	846	934	1011	1086	1146	1259	1350	1427
65	25.4	124	10	11.48	2.361	429	484	548	610	676	740	808	877	948	1020	1123	1260	1380	1488	1585	1666	1816	1937	2038
			14	9.88	1.654	336	394	454	513	577	637	702	769	834	903	1000	1136	1254	1360	1461	1540	1691	1816	1917
			19	9.08	1.301	288	336	388	440	492	547	602	658	719	779	865	985	1089	1182	1269	1336	1470	1571	1657
80	25.4	137	10	14.13	2.617	466	531	601	671	740	813	884	960	1032	1112	1219	1373	1504	1620	1735	1823	1991	2123	2232
			14	12.29	1.837	377	440	505	570	636	704	774	846	920	996	1102	1252	1382	1499	1610	1701	1869	1995	2105
			19	11.35	1.447	324	378	433	490	548	606	668	730	793	860	952	989	1196	1297	1394	1473	1614	1730	1821

AMBIENT TEMPERATURE CORRECTION.

The emission figures are based on an ambient temperature of 20°C and may be corrected for other ambient temperatures in the range 0°C to 40°C by multiplying by the factor R.

where R =	T-Ta

	T-20

T = Mean temperature of heating medium °C.
Ta = Ambient Temperature °C.

BANKED TUBE ARRANGEMENTS

When tubes are arranged in banks, the output is obtained by multiplying the output from a single tube by the following factors –

2 TUBE BANK – 1.6 | 3 TUBE BANK – 2.2 | 4 TUBE BANK – 2.8

WATER VELOCITY CORRECTION.

The emission figures for hot water are based on a velocity of 0.30 metres/sec. For other velocities the following factors should be applied.

Velocity Meters/Sec	0.05	0.10	0.20	0.30	0.40	0.50	0.60	0.80	1.00
Correction Factor	0.870	0.912	0.965	1.00	1.007	1.017	1.025	1.035	1.040

ENCLOSURE IN CONVECTOR TYPE CASINGS

When tubes are mounted in a suitable convector type casing, outputs are considerable increased. Information can be provided on receipt of details of the proposed casing.