Thermodynamic, thermoeconomic and environmental performance analyses of a high bypass turbofan engine used on commercial aircrafts

Year 2019, Volume: 23 Issue: 3, 453 - 461, 01.06.2019

Özgür Balli

https://doi.org/10.16984/saufenbilder.416228

Cited By: 12

Abstract

Exergetic, exergoeconomic and exergoenvironmental
analyses of a high bypass turbofan engine used on commercial aircraft are
performed to determine the magnitudes of the irreversibilities within a the system, exergy cost
formation rates of product and waste exergy, and the environmental damage cost rate of engine
emissions. According to this
study, the GE90-115 turbofan engine produces 324.59 GJ/h- kinetic exergy rate
while it consumes 4.104 kg/s Jet-A fuel. The energy and exergy efficiency
values of the engine are estimated to be 51.00% and 48.05%. The fuel cost rate is
calculated to be 9632.91 US$/h when the specific fuel exergy cost is found to
be 14.24 US$/GJ. The specific product exergy cost is obtained to be 32.23 US$/GJ.
Hovewer, the total environmental damage cost rate of engine emissions (UHC, CO
and NOx) is accounted to be 4552.83 US$/h as long as the specific environmental
damage cost is determined to be 14.02 US$/GJ. As a result, the specific exergoenvironmental
cost is calculated to be 46.25 US$/GJ for Jet-A fuel.

Keywords

Turbofan engine, exergy analysis, exergoeconomic analysis, exergoenvironmental analysis

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