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gas/propane vs. natural gas portable generator
Posted on 9/21/22 at 12:46 pm
Posted on 9/21/22 at 12:46 pm
Looking at portable generators, DuroMax specifically, and would prefer to primarily use natural gas. I haven't been able to find a portable that runs solely on natural gas, and the difference in price for a gasoline vs. natural gas is north of $1000, I assume because most are able to accept multiple fuels. Is it worth it to get an off the shelf multi-fuel generator at the higher cost or just get the less expensive gas generator and add a conversion kit at a fraction of the cost? Pros/Cons?
I searched and couldn't find the topic so SIAP. Thanks
Edited to add reading the DuroMax fine print they void the warranty if you add a conversion kit, so there’s that.
I searched and couldn't find the topic so SIAP. Thanks
Edited to add reading the DuroMax fine print they void the warranty if you add a conversion kit, so there’s that.
This post was edited on 9/21/22 at 1:09 pm
5
Posted on 9/21/22 at 1:02 pm to HeyCap
I’d get a multi fuel model. You never know if it will happen where you can’t get or run out of X fuel.
Posted on 9/21/22 at 1:29 pm to HeyCap
In most cases with portable generators that you'd run on NG, your best bet is to buy either a standard gasoline model or a dual fuel model and buy a tri-fuel regulator kit from Century fuel products, motor snorkel, etc. Their regulators are created and better equipped to run generators on low pressure NG and i've been told by motor snorkel in their testing they don't reduce the power output very much when running a shorter 3/4 or 1" gas line from your meter.
I bought a Westinghouse Wgen9500DF and will be buying the conversion kit from motorsnorkel.
I bought a Westinghouse Wgen9500DF and will be buying the conversion kit from motorsnorkel.
This post was edited on 9/21/22 at 1:33 pm
Posted on 9/21/22 at 1:36 pm to HeyCap
How much wattage do you need? You can get Firman Tri-Fuels for under $1,000.
Posted on 9/21/22 at 2:45 pm to jordan21210
quote:
How much wattage do you need? You can get Firman Tri-Fuels for under $1,000.
I was looking for something in 12-13000 Max range, knowing running kw will be a few thousand less on most models. I don't need the whole house powered but it would be large enough to power a 4 ton a/c with and 2 refrigerator/freezers along with some other appliances on a meted basis.
Posted on 9/21/22 at 3:05 pm to HeyCap
i plan to get a natural gas kit for the Duromax XP9000iH i have coming in
I swear natural gas powered inverter gen is the best, eco mode pulls less natural gas under light load, no need to find gas during a big event, this Duromax already has a propane option on it (which makes it a tri-fuel after putting the natural gas kit) this makes it have full flexibility, not to mention MUCH QUIETER than a open frame 3600rpm machine, then it is parallelable if i need more
people have run 5 ton units (with soft start) with this Duromax
I swear natural gas powered inverter gen is the best, eco mode pulls less natural gas under light load, no need to find gas during a big event, this Duromax already has a propane option on it (which makes it a tri-fuel after putting the natural gas kit) this makes it have full flexibility, not to mention MUCH QUIETER than a open frame 3600rpm machine, then it is parallelable if i need more
people have run 5 ton units (with soft start) with this Duromax
Posted on 9/21/22 at 3:33 pm to DVinBR
quote:
DVinBR
How much if any wattage do you lose using NG as opposed to gasoline? Is there a straight percentage or is it dependent on the generator?
Posted on 9/21/22 at 4:06 pm to HeyCap
1 gallon natural gas = 82.62 cubic feet natural gas (14.73psi)
LINK
1 gallon of gasoline = 120,238BTU
1 gallon natural gas = 85,842BTU
Thus, natural gas contains roughly 71% the energy of gasoline
a 7000W gasoline generator will put out roughly 5000W after conversion, but there are ways to mitigate this energy loss with air/fuel mixture changes (that you can't do yourself easily on a generator)
LINK
1 gallon of gasoline = 120,238BTU
1 gallon natural gas = 85,842BTU
Thus, natural gas contains roughly 71% the energy of gasoline
a 7000W gasoline generator will put out roughly 5000W after conversion, but there are ways to mitigate this energy loss with air/fuel mixture changes (that you can't do yourself easily on a generator)
This post was edited on 9/21/22 at 4:08 pm
Posted on 9/22/22 at 2:07 pm to HeyCap
I recently bought the gas version duromax 13000 and used the century fuels conversion kit. It works flawless. I run my whole house on it via 50 amp inlet, 3.5 ton AC with micro air, 3 fridges and all lights fans etc.
I’m using a 1” line 20ft long straight off the meter, I put a T before the house.
Century has the best prices on gas hose as well as quality MB sturgis quick connects.
I’m using a 1” line 20ft long straight off the meter, I put a T before the house.
Century has the best prices on gas hose as well as quality MB sturgis quick connects.
Posted on 9/22/22 at 2:49 pm to HeyCap
add a soft start to that AC unit and you can easily run it and everything else with that size gen or a little less.
The W-gen9500 by Westinghouse is a good buy.
The W-gen9500 by Westinghouse is a good buy.
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