| running roof air on DC [message #89689] |
Thu, 24 June 2010 08:03  |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
Karma:
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Senior Member |
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The electric fan thread drifted away a little and I've always been interested in the topic so i thought I'd bring it up fresh;
A Coleman 13.000 btu roof air draws 15 amps at 120 VAC
THat's 150 amps at 12VDC or 75 amps at 24VDC.
I think you can get a 100 amp 24 volt alternator and a 2000 watt 24V inverter for under $1000 and run the roof air with no problem.
Mounting the second alt. would not be so difficult.
Would it be worth the effort?
Is there a flaw in the math?
You'd be adding a constant 3hp drag on the engine so there would probably not be any gain in efficiency over running the generator.
If all that worked out then you could run the roof air for a couple hours on four golf cart batteries.
That might be enough to get you through a HOT night in a "no generator after 10:pm campground".
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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