Transport fuels by IPCC

[/transport/ipcc/fuel]

This methodology provides data and a calculation methodology for calculating CO₂ emissions associated with the consumption of transport fuels (e.g. motor gasoline, diesel, kerosene, compressed natural gas (CNG), liquefied natural gas (LNG), liquid petroleum gas (LPG)). The methodology is sourced from the 2006 IPCC Guidelines for National Greenhouse Gas Inventories.

The methodology

Emissions model

Greenhouse gas emissions associated with transport arise from the combustion of fuels. According to this methodology, CO₂ emissions are directly related to the quantity of carbon which is oxidised during combustion and therefore directly proportionate to the quantity of fuel burned and the concentration of carbon within the particular fuel type.

Model data

The IPCC provides the following fuel property data for several types of transport fuel:

CO₂ emissions factor: emissions factors expressed in terms of quantities of CO₂ emitted per unit of energy (kg per TJ)
Heating value: 'heating' or 'calorific' values (net) describing the energy content of the fuel (TJ per Gg)

Thus, CO₂ emissions can be calculated in two ways using these data: (1) on the basis of energy consumption by simply multiplying a quantity of energy by the mass CO₂ per energy emission factor; or (2) according to a mass of fuel by converting a mass-based fuel quantity (e.g. kg, tonnes) into its corresponding energy quantity using the heating value, and multiplying by the energy-based emission factor.

A third method of calculating is on the basis of a volumetric quantity of fuel (e.g. litres, barrels), which can be achieved by specifying a volumetric quantity together with value for fuel density (i.e. mass per unit volume) which enables the conversion of volumetric quantities into their corresponding mass-based quantity and, in-turn, into energy and CO₂ quantities.

Related methodologies

Other IPCC transport categories are available which represent transport fuel consumption in specific offroad, ship and train contexts, as well as vehicular emissions for European road vehicles and both 'conventionally' and 'alternatively' (cng, lpg, lng, ethanol) fuelled vehicles in the US.

Using this methodology

Choosing a specific activity type

To use this methodology, the particular type of fuel which best represents the users emissions scenario must be specified by selecting from the fuel drill down choice.

Activity data required

Calculations can be made on the basis of either: (1) energy consumed; (2) mass of fuel consumed; or (3) volume of fuel consumed.

Specifying energy consumption: Set the energy consumed using the energy profile item value.

Specifying fuel mass: Set the mass of fuel consumed using the mass profile item value.

Specifying fuel volume: Set the volume of fuel consumed using the volume profile item value. In this case the fuel density must also be specified using the density profile item value.

Calculation and result

The returned quantity for this methodology represents the CO₂ emissions associated with the fuel consumption specified.

	UID	Label
	12XYKE9SPWQX	compressed natural gas
	J1KEAX4KW64E	gas/diesel oil
	5I9IU6VUIP4L	kerosene
	EBLOCE7X3JFQ	liquefied natural gas
	CQ976P8T6OSE	liquefied petroleum gases
	8DADV66VTPWP	lubricants
	RKF112R3TQBH	motor gasoline

Name: Transport_fuels_by_IPCC

Full path: /transport/ipcc/fuel

Parent Category: IPCC transport methodologies

Provenance: IPCC

calculation direct emission_factor energy fuel global IPCC IPCC_energy IPCC_energy_mobile IPCC_tier1 IPCC_tier2 IPCC_tier3 mass transport volume