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How Many Cu Feet Of Cng In 1 Gge

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  • How Many Cu Feet Of Cng In 1 Gge

    Can someone tell me how many cu feet and/or cu inches. Thanks

  • #2
    Re: How Many Cu Feet Of Cng In 1 Gge

    Actually CNG is metered by mass weight, 5.66 lbs of natural gas is 1 GGE.

    depending on the BTU of your local gas it will run between 114 and 125 cubic feet of gas. The IRS has a differant number.

    The technology of the dispenser is very simple but weights and measurment confused the issue by establishing a GGE and not selling gas by weight like the rest of the world sells CNG.

    It really does not take long before you understand that your cost per mile are alot better for CNG than gasoline. The GGE opened the window for marketers to mess with pricing based to Gasoline price.

    When Weights and Measurements comes out and checks the dispenser they use a scale or a mas weight prover to calibrate the dispenser. The GGE display is just math after that. The dispenser is just a big scale with a calculator for the display.

    See www.tulsagastech.com then go to the links page and their is a link to how gas is measured and sold. There also a article on the CNG prover about this on the same website. We try to put all of this information on there as we see the need to explain something like this. We have this site chuck full of stuff like this.

    Tom Sewell

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    • #3
      Re: How Many Cu Feet Of Cng In 1 Gge

      Hello et al,

      Tom is absolutely right.

      I'd add another layer to the onion...BTU content. It will have an effect on emissions and range...and varies widely across the country. Oklahoma is blessed with high BTU content gas, but Ohio isn't. So, check yours.

      afvman

      p.s. your gas company should provide a spec sheet on their pipeline gas quality for n/c!
      Last edited by afvman; 05-23-2008, 06:45 AM.

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      • #4
        Re: How Many Cu Feet Of Cng In 1 Gge

        we buy NG by the therm is AZ and it's 1.25 therms to a GGE
        sigpichttp://WWW.CNGMOTORS.COM
        SAVE TIME. SAVE MONEY. SAVE THE ENVIRONMENT.

        2003 Hummer H2 bi-fuel
        2000 GMC Yukon XL bi-fuel
        1999 International 4700 dual-fuel
        2007 Chevy Avalanche bi-fuel

        FMQ2-36 Fuelmaker w/ 24 GGE cascade

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        • #5
          Re: How Many Cu Feet Of Cng In 1 Gge

          which leads me to wonder how much of the gas you buy for you house is methane and how much is CO2 or even water vapor.

          The gas line is not a pure product nor is it the same year round. But then neither is gasoline.

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          • #6
            Re: How Many Cu Feet Of Cng In 1 Gge

            As long as my cars run on it and it stays cheap it can be manure for all I care
            sigpichttp://WWW.CNGMOTORS.COM
            SAVE TIME. SAVE MONEY. SAVE THE ENVIRONMENT.

            2003 Hummer H2 bi-fuel
            2000 GMC Yukon XL bi-fuel
            1999 International 4700 dual-fuel
            2007 Chevy Avalanche bi-fuel

            FMQ2-36 Fuelmaker w/ 24 GGE cascade

            Comment


            • #7
              Re: How Many Cu Feet Of Cng In 1 Gge

              Interesting discussion.

              I have noticed at times a significant decrease in mileage. This is not a tank to tank change but seemed to last for a couple months and then improved. I was suspicious that gas quality had changed but did not really know.

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              • #8
                Re: How Many Cu Feet Of Cng In 1 Gge

                Originally posted by TOMTGT View Post
                See www.tulsagastech.com then go to the links page and their is a link to how gas is measured and sold.
                Tom,

                I could not find a "links page" from the main tgt.com website. Am I missing it somehow?

                John


                -- edit: And so it goes, right after posting I find it buried in with option number six.

                Last edited by jblue; 05-23-2008, 03:28 PM.


                ?Innovation is driven by having access to things.? -- Gleb Budman, CEO of backblaze.com

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                • #9
                  Re: How Many Cu Feet Of Cng In 1 Gge

                  Originally posted by CNG MOTORS View Post
                  As long as my cars run on it and it stays cheap it can be manure for all I care

                  ya..... but you can not burn water vapor or carbon dioxide.

                  Methane is manure gas....:-)

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                  • #10
                    Re: How Many Cu Feet Of Cng In 1 Gge

                    Although there may be many trace gas' present in pipeline quality gas, well gas will have varying amounts of propane, ethane, pentane, butane and a few others I don't recall at the moment. You here to this referred to as "hot gas". Trace amounts of carbon dioxide and water vapor may be there as well. Thus the need for a good dryer on home well's, if being used for a vehicle refueling device.
                    [ATTACH=CONFIG]temp_4586_1441434431016_578[/ATTACH]

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                    • #11
                      Re: How Many Cu Feet Of Cng In 1 Gge

                      Originally posted by Idarusskie View Post
                      ya..... but you can not burn water vapor or carbon dioxide.

                      Methane is manure gas....:-)
                      Mad max beyond thunderdone style

                      Isn't this going to vary based on your pressure?
                      One can assume 3600psi I guess.

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                      • #12
                        Re: How Many Cu Feet Of Cng In 1 Gge

                        I agree with the therm part, but 1 cubic ft of a compressable gas is going to vary with pressure. Weight is really the answer.

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                        • #13
                          Re: How Many Cu Feet Of Cng In 1 Gge

                          SoCal gas uses 5.56 Lb per gge.
                          [ATTACH=CONFIG]temp_4586_1441434431016_578[/ATTACH]

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                          • #14
                            Re: How Many Cu Feet Of Cng In 1 Gge

                            You sure that 5.56 figure is not a type somewhere curtis? I was under the impression that gge was a defined unit by the california weights and measures that defines it as being 5.66lbs when referring to natural gas.
                            1997 Factory Crown Victoria w/ extended tanks ~~ Clunkerized!
                            2000 Bi-Fuel Expedition --> ~~ Sold ~~ <--

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                            • #15
                              Re: How Many Cu Feet Of Cng In 1 Gge

                              Originally posted by CraziFuzzy View Post
                              You sure that 5.56 figure is not a type somewhere curtis? I was under the impression that gge was a defined unit by the california weights and measures that defines it as being 5.66lbs when referring to natural gas.
                              Like I said, that number came from SoCal Gas. If you have something published through weights & Measures that might resolve it. I suspect that both numbers could be right, based on variance in BTU content in different area's.
                              [ATTACH=CONFIG]temp_4586_1441434431016_578[/ATTACH]

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