7. Accounting for Liquefied Petroleum Gas other than 60:40
See Climate Change (Stationary Energy and Industrial Processes) Regulations 2009: 14 and 50
Emissions factors for the three defined classes of LPG-related product: propane, butane, and LPG with a propane content of 60 per cent by volume, are provided in the regulations. For LPG mixes that differ in a material way from one of these classes, an alternative calculation method can be used based on the volume fraction of propane in the mix.
Step one: calculate a CO2-only emissions factor from the volume fraction of propane:
EFLPG = 3.0289 — 18.09 x v PRO
572.6 — (65.9 x vPRO)
Step two: add an emissions factor for CH4 and N2O and apply an oxidation factor to
EF = (0.995 x EFLPG) + 0.0099
The resulting emissions factor should be rounded to three decimal places.
