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Blackeagle · 11-15-2003, 08:53 PM

fhorst,

I'm sure you're aware of the advantage of a high head pump @3gpm & 22 ft. of head vs. a pump offering 5gpm but only 7 ft. of head. The high head pump will deliever a much higher system flow.

A blower fan is like that high head pump, it provides lower cfm, but a much higher pressure. So more air flows through the resistence of the rads fins and thus the lower cfm blower cools better than the axial fan with a much higher cfm rate but only 1/4 the pressure rate, or less, of the blower.

I hope this explains it OK.

11-15-2003, 08:53 PM	#14
Blackeagle Thermophile Join Date: Oct 2002 Location: U.S.A = Michigan Posts: 1,243	fhorst, I'm sure you're aware of the advantage of a high head pump @3gpm & 22 ft. of head vs. a pump offering 5gpm but only 7 ft. of head. The high head pump will deliever a much higher system flow. A blower fan is like that high head pump, it provides lower cfm, but a much higher pressure. So more air flows through the resistence of the rads fins and thus the lower cfm blower cools better than the axial fan with a much higher cfm rate but only 1/4 the pressure rate, or less, of the blower. I hope this explains it OK.