Method for estimating a combustion characteristic of a gas that may contain dihydrogen

A device for estimating at least one combustion characteristic of a fuel gas belonging to a family of fuel gases, the at least one combustion characteristic comprising at least one of a Wobbe index or a higher heating value, the device comprising:

• at least two first sensors configured to measure at least two flow properties of the fuel gas, the at least two flow properties comprising two or more of:
• a flow rate, a temperature, or a pressure;
• a second sensor configured to measure a dihydrogen content XH2 contained in the fuel gas;
• and
• a processor configured to estimate the at least one characteristic
• Ξ
• GN
• H
• ⁢
• ⁢
• 2
• using an empirical affine relationship of:
• Ξ
• GN
• H
• ⁢
• ⁢
• 2
• =
• α
• +
• β
• ·
• Y
• +
• γ
• ·
• X
• H
• 2
• where:
• α, β, and γ are coefficients predetermined for the family of fuel gases;
• and
• Y is a variable representative of physical properties of the fuel gas prepared from the measurements of the at least two flow properties of the fuel gas, the physical properties of the fuel gas comprising at least one of:
• a viscosity, a specific heat capacity, or a density of the fuel gas.

A non-transitory computer-readable medium containing instructions that when executed cause a processor to:

• estimate at least one combustion characteristic of a fuel gas belonging to a family of fuel gases, the at least one combustion characteristic comprising at least one of a Wobbe index or a higher heating value;
• wherein, to estimate the at least one combustion characteristic of the fuel gas, the instructions when executed cause the processor to:
• obtain measurements of at least two flow properties of the fuel gas, the at least two flow properties comprising two or more of:
• a flow rate, a temperature, or a pressure;
• obtain a measurement of a dihydrogen content XH2 contained in the fuel gas;
• and
• estimate the at least one characteristic
• Ξ
• GN
• H
• ⁢
• ⁢
• 2
• using an empirical affine relationship of:
• Ξ
• GN
• H
• ⁢
• ⁢
• 2
• =
• α
• +
• β
• ·
• Y
• +
• γ
• ·
• X
• H
• 2
• where:
• α, β, and γ are coefficients predetermined for the family of fuel gases;
• and
• Y is a variable representative of physical properties of the fuel gas prepared from the measurements of the at least two flow properties of the fuel gas, the physical properties of the fuel gas comprising at least one of:
• a viscosity, a specific heat capacity, or a density of the fuel gas.