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.

中文翻译：

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不同功率设置下高旁通涡扇发动机的热能和热能持续性指标研究

本文采用热力学原理，研究了几种节气门设置对几个火力和火力持续性参数的影响，用于名为 PW4000 发动机的高旁通涡扇发动机。首先，由于从 5544 RPM 上升到 9169 RPM，PW4000 的能效在 9.77% 和 37.69% 之间变化。考虑到基于组件的火用结果，提高功率设置会提高组件的火用效率。此外，PW4000 的燃烧器在 19 转/分钟内属于最低火用效率。即，由于 RPM 的增加，燃烧器的火用效率从 69.14% 增加到 86.31%，而 LPT 的火用效率从 92.01% 增加到 93.25%。考虑到整个发动机的可持续性参数，PW4000 的火用效率从 9.13% 到 35% 不等。26% 而它的可持续发展指数在整个 RPM 值中从 0.276 增加到 1.238。此外，由于 RPM 值上升，PW4000 的环境影响因子从 3.26 下降到 0.807。根据这些结果，表明热力学参数和功率设置之间通常存在非线性关系。测量不同运行点的涡轮风扇发动机的热能指标可以让研究人员找到发动机在热力学可持续性方面的最佳 RPM 值。