Environmental impact of an aircraft engine with exergo-life cycle assessment on dynamic flight

Aygün, Hakan; Turan, Önder

doi:10.1016/j.jclepro.2020.123729

Cited by 27 publications

(7 citation statements)

References 18 publications

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“…It is subjected to widely used useful equations for measuring aircraft engine systems [ 57 – 62 ]: Second law efficiency: the exergy efficiency : Irreversibility (exergy destruction ratio): Waste exergy ratio: System-level fuel exergy waste ratio: Component-level fuel exergy waste ratio: System-level productivity lack ratio: Component-level productivity lack ratio: Exergetic improvement potential: …”

Section: Extensive Energy and Exergy Analysesmentioning

confidence: 99%

Energy, exergy, thermoecologic, environmental, enviroeconomic and sustainability analyses and assessments of the aircraft engine fueled with biofuel and jet fuel

Akdeniz

Ballı²,

Çalışkan

2023

J Therm Anal Calorim

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Section: Extensive Energy and Exergy Analysesmentioning

confidence: 99%

Energy, exergy, thermoecologic, environmental, enviroeconomic and sustainability analyses and assessments of the aircraft engine fueled with biofuel and jet fuel

Akdeniz

Ballı²,

Çalışkan

2023

J Therm Anal Calorim

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“…Reference 15 presents an assumed eight flight conditions for Boeing 747 with PW4000 engine, including taxi-out, take-off, climb-out, climb, cruise, descent, approach, and landing. In the present work, the flight altitude and Mach number reached in every condition are modified to adapt the AGTF30 engine, as shown in Figure 3.…”

Section: Model Set Up and Test Definitionmentioning

confidence: 99%

Turbofan engine performance prediction methodology integrated high-fidelity secondary air system models

Yang

Jian

Dong

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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This research studies the performance of an ultra-high bypass ratio turbofan engine, and specifically its secondary air system (SAS). A co-simulation methodology is explored whereby a high-fidelity SAS model and an engine performance code featuring flexible modules can be coupled and interactively executed. The percentage of bleed flows and boundary conditions for the SAS are updated at each iteration step. For this purpose, a SAS model including different elements is developed. Furthermore, a commercial computational fluid dynamics (CFD) solver is adopted to capture the complex flow field in the pre-swirl system. The credibility of cycle calculation and SAS elements is validated by comparing with publicly available data. Subsequently, an elaborately designed SAS is modeled and co-simulated with the AGTF30 engine using a flow network simulation method. The coupling effect between the engine performance and the SAS is studied for eight different flight conditions. The correlation and prediction of engine performance due to seal clearance change is presented. The co-simulation approach clarifies the mutual interactions between the engine overall parameters and the SAS. The results reveal that the enhanced flow network model can improve the simulation accuracy of engine performance over a wide range of operating conditions.

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“…The major components and their station numbers are presented in Figure 1. 21,26 With respect to thermodynamic values showed in Table 1, variations of temperature and pressure are presented in Figure 2 for 19 RPM values. It can be seen that as the power setting increases, both thermodynamic values attain relatively high levels.…”

Section: System Descriptionmentioning

confidence: 99%

“…18,19 Several studies regarding gas turbine engines are associated energy analysis with environmental analysis. [20][21][22][23] As mentioned-above, various studies have been carried out by implying exergy analysis to investigate turbofan systems. Nowadays, understanding the relationship between exergo-sustainability and operation modes becomes great focusing point in researchers.…”

mentioning

confidence: 99%

Investigation of exergetic and exergo‐sustainability metrics for high by‐pass turbofan engine at different power settings

Aygün

2021

Env Prog and Sustain Energy

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This paper investigates influences of several throttle settings on several exergetic and exergo-sustainability parameters by employing thermodynamic principles for high by-pass turbofan engine as named PW4000 engine. First, energy efficiency of the PW4000 is found to vary between 9.77% and 37.69% due to rising from 5544 RPM to 9169 RPM. Considering exergetic results on component basis, rising power setting leads to increase exergy efficiency of the components. Also, the combustor of PW4000 belongs to lowest exergy efficiency throughout 19 RPMs. Namely, exergy efficiency of the combustor increases from 69.14% to 86.31% whereas that of LPT raises from 92.01% to 93.25% owing to the increase in RPM. Considering sustainability parameters for whole engine, exergy efficiency of PW4000 varies from 9.13% to 35.26% whereas its exergetic sustainability index increases from 0.276 to 1.238 throughout RPM values. Furthermore, environmental effect factor of PW4000 decreases from 3.26 to 0.807 due to rising RPM value. According to these results, it is revealed that there are generally nonlinear relationship between thermodynamic parameters and power settings. To measure exergetic metrics of turbofan engines for different running points can allow researchers to find optimum RPM value of the engine in terms of thermodynamic sustainability.

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Environmental impact of an aircraft engine with exergo-life cycle assessment on dynamic flight

Cited by 27 publications

References 18 publications

Energy, exergy, thermoecologic, environmental, enviroeconomic and sustainability analyses and assessments of the aircraft engine fueled with biofuel and jet fuel

Energy, exergy, thermoecologic, environmental, enviroeconomic and sustainability analyses and assessments of the aircraft engine fueled with biofuel and jet fuel

Turbofan engine performance prediction methodology integrated high-fidelity secondary air system models

Investigation of exergetic and exergo‐sustainability metrics for high by‐pass turbofan engine at different power settings

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