sh410
Northwest
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Trying to find out how much a propane conversion on a generator would derate the power output of the generator from the rated output on gasoline.
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Deen
Vancouver, WA
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On a 6.5 Kw it's down to 6.2 Kw on propane, or at least that's what our Genajunk was in our first DSDP.
Deen - Vancouver, WA
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djevans
Tennessee
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I am interested in your question, but don't have a lot of time at the moment to research it - but I found this for a small generator, but don't know if it's accurate or not
NOTE: (1) Based on gasoline fuel. Derate 10% for L.P. gas, 20% for Natural Gas. (2) Code G capacitor start motor. (3) Electric start models include battery rack and cables. Battery not included. BCI Group U1, 12-volt, 235 CCA battery required. (4) Commercial or Prime Power Warranty – 90 Days. International Warranty – Contact WINCO for details.
I found the above here
Check my math, but that "seems" to be roughly in line with what Deen provided, though not quite
* This post was
edited 10/21/09 02:47pm by djevans *
Don . . . near 36.171N 086.784W, TN near here
WA4ZFN
2003 Fleetwood Revolution 40C - Saturn VUE
350hp Cummins ISC
- - - P i c t u r e s - - -
I'm confused, WAIT! Maybe I'm not!
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Golden_HVAC
Fulltime, CA, USA
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Hi,
Remember that there is only 95,000 Btu's in a gallon of propane, and 115,000 in a gallon of gasoline, you will be using about 20% more fuel too!
I think the 4 KW gas one will drop to about 3,200 watts.
Good Luck,
Fred.
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Wayne Dohnal
Banks, OR.
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I think it might vary from generator to generator. For one where the engine runs flat out, like an eu1000i or eu2000i, I'd expect more electrical output loss than with a generator where the engine is loafing along at full output, like an eu3000i or ef2400is.
2009 Fleetwood Icon 24A
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gunny357
North Carolina
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Depends.
Contact he genset manufacturer and ask them.
Might be no derate and it might be a 10%.
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jimmyfred
Tx
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.........For every 1,000 feet above mean sea level you're going to be getting less output ! , jf
2003 Chevy 8.1 Dually 2Wdr.
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427435
Rochester, Mn
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Depends on whether the generator or the engine was the limiting factor in the original genset rating. If the engine was slightly larger than necessary to achieve full generator output, then there might not be much or any deration with LP gas.
Mark
2000 Itasca Suncruiser 35U on a Ford chassis
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hard3
southern Illinois
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on my stand-by generac at home it is 17kw on lp, 16 kw on natural so the 10% from gas to lp is not far off
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kcabpilot
CA
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My Onan is 2800, LP version is 2500 so that comes out to 12%
The numbers given above "95,000 Btu's in a gallon of propane, and 115,000 in a gallon of gasoline" equate to a 17% difference but as noted you are using propane at a higher rate (gallons per hour)
1994 Lance 990 on 1997 F350 PSD Dually "Rhino Haunches"
We also have a 'truck' that FLYS
Our recent camping trips
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