Liu Ziyu, Yu Sha, Yang Xiaoyi
School of Energy and Power Engineering, Energy and Environment International Centre, Beihang University, Beijing, China.
Sinopec Shanghai Engineering Company Limited, Shanghai, China.
Bioresour Bioprocess. 2024 Sep 4;11(1):84. doi: 10.1186/s40643-024-00798-w.
Air quality in airport attracts a widespread attention due to the emission of GHGs and pollutants related with aircraft flight. Sustainable aviation fuel (SAF) has confirmed PM reduction due to free of aromatics and sulphur, and thus air quality improvement in airport is prospected by SAF blend. Two types of SAF were assessed the potential of energy saving and emission reduction by ZF850 jet engine. FT fuel is characterized with only paraffins without aromatics and cycloparaffins while HCHJ fuels is characterized with no aromatics. The descend of air quality and SAF blend were both investigated the effect on the engine performance and emission characteristic. The critical parameters were extracted from fuel compositions and air pollutants. Ambient air with a higher PM could lead to the rise of engine emission especially in UHC and PM despite at the low thrust setting and high thrust setting, and even couple with 3.2% rise in energy consumption and 1% reduction in combustion efficiency. CO, NO and NO in ambient air show less influence on engine performance and emission characteristic than PM. Both types of SAF blend were observed significant reductions in PM and UHC. PM reduction obtained 37.9%-99.8% by FT blend and 0.64%-93.9% by HCHJ blend through the whole trust settings. There are almost 6.67% positive benefit in TSFC through the whole thrust setting by 7% FT blend. The effects of air quality and SAF blend on engine emission present significant changes on PM and UHC but the slight change on CO and NO. By SAF blend, the energy saving and pollutant reduction obtained could be both benefit for air quality improvement in airport and further reduce engine emission as the feedback of less pollutants in ambient air.
由于与飞机飞行相关的温室气体和污染物排放，机场空气质量受到广泛关注。可持续航空燃料（SAF）因不含芳烃和硫而被证实可减少颗粒物排放，因此通过混合SAF有望改善机场空气质量。通过ZF850喷气发动机评估了两种类型的SAF的节能减排潜力。FT燃料的特点是仅含石蜡，不含芳烃和环烷烃，而HCHJ燃料的特点是不含芳烃。研究了空气质量下降和SAF混合对发动机性能和排放特性的影响。从燃料成分和空气污染物中提取了关键参数。尽管在低推力设置和高推力设置下，较高颗粒物含量的环境空气仍可能导致发动机排放增加，尤其是未燃碳氢化合物（UHC）和颗粒物排放增加，甚至会导致能耗增加3.2%，燃烧效率降低1%。环境空气中的一氧化碳（CO）、一氧化氮（NO）和氧化亚氮（NO）对发动机性能和排放特性的影响小于颗粒物。观察到两种类型的SAF混合均能显著降低颗粒物和UHC排放。在整个推力设置范围内，FT混合燃料的颗粒物减排率为37.9% - 99.8%，HCHJ混合燃料的颗粒物减排率为0.64% - 93.9%。7%的FT混合燃料在整个推力设置范围内的燃油消耗率（TSFC）有近6.67%的正向效益。空气质量和SAF混合对发动机排放的影响在颗粒物和UHC方面有显著变化，但在CO和NO方面变化较小。通过混合SAF，实现的节能减排对改善机场空气质量都有益处，并且随着环境空气中污染物减少的反馈，还能进一步降低发动机排放。
