Wobbe Index definition

Wobbe Index or “WI” shall mean the GCV divided by the square root of the relative density.
Wobbe Index means an indicator of the interchangeability of fuel gases used to compare the combustion energy output of different composition fuel gases in an appliance;
Wobbe Index or "W" means the ratio of the corresponding calorific value of a gas per unit volume and the square root of its relative density under the same reference conditions:

More Definitions of Wobbe Index

Wobbe Index means the Gross Heating Value on a volumetric basis at specified reference conditions divided by the square root of the Specific Density at the same specified metering reference conditions of Gas. [“Indice di Wobbe” in the Italian text]
Wobbe Index means a measure of the thermal input through a fixed orifice, calculated by dividing the natural gas Gross Heating Value in mega joules per cubic meter by the square root of the natural gas specific gravity with respect to air, based on a gross or higher heating value (HHV) at standard conditions 14.73 psi/60o F, 101.325Kpa/15o C real, dry basis.
Wobbe Index means a main indicator of fuel burning characteristics used to compare combustion energy output of different composition of fuel gases in an appliance.
Wobbe Index means when applied to gas, the calorific value divided by the square root of the Relative Density.
Wobbe Index means the index obtained when the energy content of the gas in (MJ/m³n) is divided by the square root of the relative density of the gas.
Wobbe Index means the number obtained by the formula:
Wobbe Index means the number obtained by using the following formula —