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  • gj natural gas to m3 natural gas

    What is the correct formula for converting gj natural gas to cubic meters of natural gas. Any help is greatly appreciated

  • #2
    Re: gj natural gas to m3 natural gas

    Originally posted by Unregistered
    What is the correct formula for converting gj natural gas to cubic meters of natural gas. Any help is greatly appreciated
    There is no "correct formula" as the energy content of natural gas varies several percent according to source. A precise number requires quantitative analysis of the gas composition.

    Howver, Wikipedia gives typical values of gross heating value (HHV):
    http://en.wikipedia.org/wiki/Natural_gas
    For natural gas
    One cubic foot of natural gas produces about 1,030 BTU/SCF (38.4 MJ/Nm)
    Note that "standard" and "normal" volumes are measured at different temperatures.

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    • #3
      Re: gj natural gas to m3 natural gas

      1000 = MJ/GJ
      so if 1 cubic meter of NG = 38.3 MJ then 1000/38.3 @ 26.1 cubic meters / GJ

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      • #4
        Re: gj natural gas to m3 natural gas

        I have a similar question regarding natural gas.

        If I am paying $9.99/GJ - how can I convert that to see how
        much I would be paying per cubic meter?

        Thank you in advance!

        Comment


        • #5
          Re: gj natural gas to m3 natural gas

          Originally posted by Unregistered View Post
          I have a similar question regarding natural gas.

          If I am paying $9.99/GJ - how can I convert that to see how
          much I would be paying per cubic meter?

          Thank you in advance!
          See post #3 and divide by 26.1 m/GJ. You are paying about $0.383/m. However, this figure is using a typical heat contnet. The actual heat content can vary %5 or even 10% depending on the origin, and therefore chemical composition, of the gas.

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          • #6
            Re: gj blast furnace gas to m3 natural gas

            the price for blast furnace gas is in gigajoule, and i have to convert it to m3
            Can anybody help me with a formula?
            Thank you.

            Comment


            • #7
              Re: gj blast furnace gas to m3 natural gas

              Originally posted by Unregistered View Post
              the price for blast furnace gas is in gigajoule, and i have to convert it to m3
              Can anybody help me with a formula?
              Thank you.
              You could look at posts #2 and #5 for method. Gigajoules rate the heat content of the gas. You either need a heat content per cubic meter from your gas supplier, or a chemical analysis of the gas, and heat content of the constituent gases to compute. There is no "master formula," it is a property of the particular gas.

              I don't know the composition of "blast furnace gas" even on a "typical" basis.

              Comment


              • #8
                Re: gj natural gas to m3 natural gas

                Originally posted by Unregistered View Post
                What is the correct formula for converting gj natural gas to cubic meters of natural gas. Any help is greatly appreciated
                can you please help me understand formula thank you

                Comment


                • #9
                  Re: gj natural gas to m3 natural gas

                  what you are looking for is typically referred to as the HEAT VALUE of natural gas(I'm assuming its natural gas) this varies by the quality of the natural gas as you are converting energy to volume....a standard used in many districts is the following:
                  cubic metres to GJ = m3 x 0.03769
                  thus 500m3 of gas consumed would equal 18.845 approx GJ
                  18.845 GJ to m3 = 18.845 / 0.03769 = 500m3

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                  • #10
                    Re: natural gas to electricity via fuel cell

                    anyone done the conversion for gas to electricity via fuel cell at say 60% efficiency ?

                    Comment


                    • #11
                      Re: gj natural gas to m3 natural gas

                      Originally posted by unregistered View Post
                      what is the correct formula for converting gj natural gas to cubic meters of natural gas. Any help is greatly appreciated
                      please convert 116.52 gj to cubic metres or kilos

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                      • #12
                        Re: gj natural gas to m3 natural gas

                        Originally posted by Unregistered View Post
                        please convert 116.52 gj to cubic metres or kilos
                        While natural gas is "mostly" methane, the trace gases affect heat content so it varies well to well. A Dept. of Energy table gives 52.225 GJ/kg as a typical value (HHV), but it can vary several percent. 116.52 GJ x 1 kg/52.225 GJ = 2.2 kg. Unless you know the heat content for your particular gas source, additional precision is unwarranted.

                        Comment


                        • #13
                          Re: gj natural gas to m3 natural gas

                          Originally posted by Unregistered View Post
                          What is the correct formula for converting gj natural gas to cubic meters of natural gas. Any help is greatly appreciated
                          1m3 natural gas to mjoules

                          Comment


                          • #14
                            Re: gj natural gas to m3 natural gas

                            Originally posted by Unregistered View Post
                            What is the correct formula for converting gj natural gas to cubic meters of natural gas. Any help is greatly appreciated
                            let's say for example
                            10 gj into qm

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