Development of N2O Emission Factors for UOG Fired Equipment

David Picard, Clearstone Engineering Ltd.
GL 13-AU-ARPC-01

There is very little data available on N2O emissions from combustion sources and the reliability of the emission factors currently used by the upstream oil and gas (UOG) industry to estimate these greenhouse gas (GHG) emissions is unclear. A measurement program is therefore proposed to develop statistically defensible emission factors for application to selected natural gas fuelled combustion equipment.

Additionally, the project will provides an opportunity to demonstrate a new technology for accurately measuring N2O emissions and a method for safely determining the combustion efficiency of a flare at a modest cost compared to other options.

Policy Issue
Improving air emissions inventories through improved emissions factors and reporting methodologies.

Knowledge Gap
Some N2O (nitrous oxide) emission estimation methods for reciprocating engines calculate N2O emissions as a fraction of total NOx emissions. However, the effect of engine loading on NOx concentration is not well understood nor is the relationship between N2O and NOx. Methods for estimating NOx emissions as a function of engine loading, as well as alternative methods for calculating the associated N2O emissions are required.

Final Report

2015 Presentation