Alternative Method to Determine the CO2 Emission Factors and Inferior Calorific Values of Natural Gases

CO2 emissions trading requires certain properties of a fuel (e. g. natural gas), such as specific CO2 emission factor and inferior calorific value, to be determined very accurately so that the quantity of CO2 emitted may also be determined in a reliable manner. The paper presents a new calculation method as an alternative to the standard method. The alternative method uses the properties superior calorific value, normal density and CO2 mole fraction usually required in gas billing to calculate the relevant data. The method is particularly useful where no full gas analysis is available, for example, where gas quality tracking systems are used.