Thermodynamic, thermoeconomic and environmental performance analyses of a commercial aircraft’s high bypass turbofan engine

Özet

Exergetic, exergoeconomic and exergoenvironmental performance analyses of a commercial aircraft’s high bypass turbofan engine are studied to predict thermodynamic efficiency of whole engine, exergy cost flow of product and waste exergy, and the environmental damage cost formation of engine emissions emitted to environment. According to this study, the GE90-115 high bypass turbofan engine produces 324.59 GJ/h-kinetic exergy rate while it burns 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$/GJ. However, the total environmental damage cost rate of engine emissions (UHC, CO and NOx) is accounted to be 4552.83 US$/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.