| electric fans (again) checking the math [message #145696] |
Thu, 06 October 2011 09:03  |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
Karma:
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First, have we heard form anyone using electric fans successfully? Along with myself, several people indicated they were looking into it it but I don't know if we've heard back from them.
i have one working on the Revcon but it's only been tested at idle-
It comes on at about 185, the temp continues to climb to 195 and then falls back below 185 and the fan cuts out. I have not timed the duration.
I do not know the output of my fan. It came from a list of FWD fords that have huge enormous fans. It's recomnended by the offroad guys.
I have figured out some math- It appears that fans produce about 125 CFM per amp- that's extraploated from the manufacturers numbers on diffferent fans.
So 5000 CFM is around 40 amps.
5000 CFM is about the air movement you would get at 60 mph over one square foot of radiator, right? (5280 ft/ mi, 1 mi/min=5280 CFM? )
I have not been able to figure out how much the clutch fan produces but these numbers might be helpful (if they are correct) in guestimating what might be needed.
Dave
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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