Heat Dissipation

RADIATORS HEAT DISSIPATION

The 520mm wide fins in the 24 flute design manufactured by Hi -Tech offer better cooling efficiency with less oil content because of the higher heat dissipation area.

DESIGN DATA CALCULATIONS FOR 520 MM WIDE FINS FOR 0W (OIL NATURAL) COOLING (24 FLUTE DESIGN)

Center Distance CC in rn	Coding Surface per section	Watts dissipated / section for oil excess temperature of						Weight Per Section inkg	Oil per Section in liters
Center Distance CC in rn	Coding Surface per section	35°C	40°C	45°C	50°C	55°C	60°C	Weight Per Section inkg	Oil per Section in liters
600	0.70	203	251	304	355	415	465	6.55	2.22
700	0.84	231	280	333	387	450	510	7.55	2.52
800	0.96	259	308	361	415	478	520	8.55	2.82
900	1.08	288	328	378	426	497	532	9.55	3.12
1000	1.20	316	364	411	462	522	548	10.55	3.42
1100	1.32	342	391	444	498	561	626	11.55	3.70
1200	1.45	364	422	477	537	606	673	12.55	3.99
1300	1.56	391	452	511	572	646	719	13.55	4.28
1400	1.68	414	479	540	608	684	760	14.55	4.55
1500	1.80	434	507	570	621	723	801	15.55	4.83
1600	1.93	459	532	600	673	759	840	16.55	5.11
1700	2.05	479	557	628	706	792	880	17.55	5.40
1800	2.16	502	582	656	734	829	915	18.55	5.68
1900	2.30	523	610	684	766	862	953	19.55	5.98
2000	2.41	545	631	709	796	896	987	20.55	6.26
2100	2.53	563	654	736	825	921	1024	21.55	6.54
2200	2.64	582	678	762	851	959	1057	22.55	6.82
2300	2.77	603	702	786	881	991	1091	23.55	7.10
2400	2.90	628	724	814	907	1017	1127	24.55	7.39
2500	3.01	645	744	837	936	1046	1156	25.55	7.67
2600	3.13	666	764	816	963	1069	1190	26.55	7.95
2700	3.25	682	786	886	990	1105	1223	27.55	8.25
2800	3.38	704	807	911	1021	1135	1256	28.55	8.53
2900	3.49	721	829	933	1044	1163	1286	29.55	8.81
3000	3.62	744	815	988	1072	1193	1355	30.55	9.09
3100	3.75	762	868	1015	1100	1224	1385	31.55	9.37
3200	3.87	784	888	1044	1128	1252	1419	32.55	9.65
3300	4.0	804	907	1072	1145	1282	1449	33.55	9.95
3400	4.12	826	928	1100	1173	1311	1483	34.55	10.23
3500	4.25	842	948	1128	1203	1341	1511	35.55	10.51

CORRECTION FACTORS

The heat transmission depends on the actual disposition of the radiators. The following correction factors will apply for different dispositions:

1) Factor (fv) for Vertical distance (v in mm) between winding center line & Radiator center line.

V	0	100	200	300	400	500	600	700	800	900	1000
fv	0.800	0.850	0.890	0.925	0.950	0.975	1.000	1.025	1.050	1.075	1.100

2) Factor (fp) for Horizontal distance (‘p’ in mm) between two adjacent Radiators.

P	575	595	620	645	685	735	785
fp	0.76	0.82	0.86	0.91	0.95	0.985	1.000

3) Factor (fn) for number of sections (n) per radiator.

n	2	4-5	6-8	9-11	12-14	15-17	18-20	21-24	25-30
fn	1.11	1.06	1.02	1.00	0.99	0.98	0.97	0.96	0.95