Stationary Combustion

[/business/energy/stationaryCombustion]

Fuel combustion methodology, stationary combustion. Calculates carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) emissions based on either the mass, volume or energy yield of consumed fuel. Scenarios include a large selection of solid, liquid and gaseous fuels within the energy producing, industrial, commericial and residential sectors amongst others. Globally applicable.

Summary

This methodology represents carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) emissions associated with the stationary combustion of fuels. The data and calculation methodology is sourced from the Greenhouse Gas Protocol (GHGP), and consolidates data from their worksheet tools GHG emissions from stationary combustion, version 4.0, CO2 emissions from the production of iron and steel, version 2.0 and GHG emissions from pulp and paper mills, version 1.3.

These datasets are in-turn derived from the 2006 IPCC Guidelines for National Greenhouse Gas Inventories, and specifically Volume 2, Chapter 1 - Introduction and Volume 2, Chapter 2 - Stationary Combustion.

The calculations provided within this category represent the Tier 1 approaches of both the IPCC and the US Environmental Protection Agency mandatory greenhouse gas reporting advice.


The methodology

Emissions model

The emissions methodology is based upon emissions factors which describe the rate at which greenhouse gas emissions are produced during fuel combustion in relation to the energy yielded by the fuel. These emissions factors are expressed in terms of kg per TJ, and are based on the net energy content of fuels (referred to as the net calorific content or the lower heating value). Emissions - expressed in terms of mass (e.g. kg) - are calculated by multiplying these factors by the quantity of energy consumed.

The methodology also includes additional conversion factors which provide the flexibility of calculating via fuel mass or volume, and on the basis energy consumed according to the gross calorific value measure of fuel energy content.

Model data

CO2 emissions associated with the stationary combustion of fuel are primarily related to the concentration of carbon within the fuel. Therefore, CO2 emissions vary between fuels types according to their different molecular composition. CH4 and N2O emissions, on the other hand, vary between specific combustion contexts. As such, this methodology provides emissions and conversion factors for 532 distinct combustion scenarios differentiated by fuel type (e.g. blast furnace gas, crude oil, jet gasoline) and combustion context (e.g. energy, construction, forestry).

Each scenario is represented by several data values:

  • CO2 emissions factor - used to convert net energy consumption into an emissions quantity
  • CH4 emissions factor - used to convert net energy consumption into an emissions quantity
  • N2O emissions factor - used to convert net energy consumption into an emissions quantity
  • Lower heating value - used to convert fuel mass into net energy consumption
  • Lower to higher heating value conversion factor - used to convert gross energy consumption in net energy consumption
Gaseous and liquid fuels contiain the following:

  • Fuel density - used to convert fuel volumes into fuel mass
In addition, the methdology uses the global warming potential (GWP) of CH4 and N2O to convert absolute emissions quantities into CO2e - the quantity of CO2 which would exert the same atmospheric warming effect.

Activity data required

Greenhouse gas emissions are directly proportionate to the quantity of fuel consumed. This can be specified in terms of either energy, mass or volume.

Calculation and results

Greenhouse gas emissions are calculated by converting any mass or volume or gross energy quantities into the corresponding quantity of net energy for the given fuel and then applying the gas-specific emissions factors. CH4 and N2O emissions are additionally converted to CO2e using the respecitive GWP's. Four emissions quantities can be calculated, representing CO2, CH4, N2O, and CO2e.

This emissions calculated by this methodology represent those attributable to the specified quantity of fuel combusted.


Additional information

Higher and lower heating values

Note that switching between LHV and HHV bases for the specification of fuel quantity is only valid when specifying fuel quantity in terms of energy.

Custom emissions factors

CO2 emission factors for butane and propane are not specified in the 2006 IPCC Guidelines for National Greenhouse Gas Inventories. In these cases, values are calculated following this method, recommended by the Greenhouse Gas Protocol.

Fuel synonyms

The Greenhouse Gas Protocol uses Gas/Diesel oil and Distillate fuel synonymously across different worksheets. These have been standardised as Gas/Diesel oil within AMEE.

 UIDLabel
OIZNZBKW4K2G Anthracite, Agriculture
BHCH1NETUWBL Anthracite, Commercial
BATTLMHU52AI Anthracite, Construction
FAKHIKAQQ2OL Anthracite, Energy
BL48G7RNMF28 Anthracite, Fisheries
WIBIBOCH48HT Anthracite, Forestry
RG7U45VNNF26 Anthracite, Institutional
TZXANC5BTBF6 Anthracite, Manufacturing
J0H30ZBPLDFM Anthracite, Residential
ZC8812RV7HDO Aviation gasoline, Agriculture
AUOTM50QU520 Aviation gasoline, Commercial
YNVU76Y7P9SI Aviation gasoline, Construction
ATXBGW1NVKJA Aviation gasoline, Energy
592AB5IZ4ZD2 Aviation gasoline, Fisheries
4NSNLBC8C0Y1 Aviation gasoline, Forestry
0BMYN2L730SX Aviation gasoline, Institutional
TYQ1L94V2VTK Aviation gasoline, Manufacturing
LK1TEYZPFFV9 Aviation gasoline, Residential
RAYE6WGH17RD Biodiesels, Agriculture
8BK15M0P8MZ7 Biodiesels, Commercial
Energy produced in combustion
Mass of fuel used
Set true to indicate that specified of energy represents consumption based on the 'higher heating value' (or gross calorific value). Otherwise, the lower heating value (or net calorific value) is assumed by default. This is only valid if consumption is specified in terms of energy. If fuel quantity is specified as a mass or a volume, this will have no effect.
Volume of fuel used