Environmental impact assessment of a turboprop engine with the aid of exergy
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Date
2013-06-30
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Publisher
Energy Journal
Abstract
To develop approaches that effectively reduce engine environmental effect of aircrafts, it is necessary to
understand the mechanisms that have enabled improvements in thermodynamic efficiency of aircraft
engines. In the present work, a turboprop engine used in regional aircrafts that produces 1948 shp and
640 N.m torque is examined using exergo-environmental method. The results show compressor, combustion chamber, gas generator turbine, power turbine and exhaust nozzle create 9%, 69%, 13%, 7%, 2% of
total environmental impact of the engine, respectively. According to rates, the compressor and gas
turbine can be considered first to improve in case of component related environmental impact.
Furthermore, total component related environmental impact for the turboprop engine is found to be
2.26 mPts/s for the constructional phase and 2.34 mPts/s for the operation/maintenance phases.
Accordingly, it is suggested that, in order to estimate environmental impact metric of aircrafts, the
exergo-environmental analysis can be employed for aircraft propulsion systems.
Description
Keywords
Exergo-environmental analysis Regional aircraft Turboprop Exergy Life cycle assessment