Impact of alternative fuels on emissions characteristics of a gas turbine engine - part 1: gaseous and particulate matter emissions.
Growing concern over emissions from increased airport operations has resulted in a need to assess the impact of aviation related activities on local air quality in and around airports, and to develop strategies to mitigate these effects. One such strategy being investigated is the use of alternative fuels in aircraft engines and auxiliary power units (APUs) as a means to diversify fuel supplies and reduce emissions. This paper summarizes the results of a study to characterize the emissions of an APU, a small gas turbine engine, burning conventional Jet A-1, a fully synthetic jet fuel, and other alternative fuels with varying compositions. Gas phase emissions were measured at the engine exit plane while PM emissions were recorded at the exit plane as well as 10 m downstream of the engine. Five percent reduction in NO(x) emissions and 5-10% reduction in CO emissions were observed for the alternative fuels. Significant reductions in PM emissions at the engine exit plane were achieved with the alternative fuels. However, as the exhaust plume expanded and cooled, organic species were found to condense on the PM. This increase in organic PM elevated the PM mass but had little impact on PM number.
Center of Excellence for Aerospace Particulate Emissions Reduction Research, Missouri University of Science and Technology, Rolla, Missouri 65409, United States. plobo@mst.edu
Prem
P
Lobo
Lucas
L
Rye
Paul I
PI
Williams
Simon
S
Christie
Ilona
I
Uryga-Bugajska
Christopher W
CW
Wilson
Donald E
DE
Hagen
Philip D
PD
Whitefield
Simon
S
Blakey
Hugh
H
Coe
David
D
Raper
Mohamed
M
Pourkashanian
D000393:Air Pollutants; D000401:Aircraft; D002248:Carbon Monoxide / Q000032:analysis; D052638:Particulate Matter; D001335:Vehicle Emissions
D000393:Air Pollutants; D052638:Particulate Matter; D001335:Vehicle Emissions; D002248:Carbon Monoxide