Fan Comparison
|
| These tests done on 22/09/09. Dual battery HiLux with
13.93volts@ idle for power. |
|
| Atmospheric
conditions :- 80.2deg.f, 29.93"bp, 57.1%hum., 2139' density altitude. |
|
| Davies Craig 16" |
56mm 2 row @17fpi |
83mm 3 row @12fpi |
|
|
m/s |
cfm |
|
m/s |
cfm |
|
|
2.82 |
764.0 |
|
2.64 |
715.3 |
inner blade |
|
4.83 |
1308.6 |
|
5.34 |
1446.8 |
centre blade |
|
6.68 |
1809.8 |
|
5.05 |
1368.2 |
outer blade |
| Average cfm flow through core |
|
1294.2 |
|
1176.8 |
|
|
| Spal 16" Extreme |
3.13 |
854.4 |
|
3.3 |
900.8 |
inner blade |
|
6.52 |
1779.8 |
|
6.42 |
1752.5 |
centre blade |
|
7.18 |
1959.9 |
|
7.28 |
1987.2 |
outer blade |
| Average cfm flow through core |
|
1531.3 |
|
|
1546.8 |
|
|
|
|
|
|
|
|
| Spal 16" big blade |
4.15 |
1132.8 |
|
3.98 |
1086.4 |
inner blade |
|
7.38 |
2014.5 |
|
7.47 |
2039.1 |
centre blade |
|
7.26 |
1981.7 |
|
8.11 |
2213.8 |
outer blade |
| Average cfm flow through core |
|
1709.7 |
|
1779.8 |
|
|
|
|
|
|
|
| reversed wire polarity |
0.08 |
21.8 |
|
|
inner blade |
| As above, just reversed the wires |
2.78 |
758.9 |
|
|
centre blade |
| to turn it into a pusher. |
3.56 |
971.8 |
|
outer blade |
| Average cfm flow through core |
|
584.15 |
|
|
|
|
|
|
|
|
