描述和预测航空排放清单和环境影响的nvPM尺寸分布
Lukas Durdina1, Eliot Durand2, Jacinta Edebeli1
1Centre for Aviation, ZHAW Zurich University of Applied Sciences, Winterthur CH-8401, Switzerland.
Environmental science & technology
|June 10, 2024
概括
了解航空航空的理解
科学领域:
- 航空排放研究 航空排放研究
- 环境科学环境科学
- 航空航天工程是航空航天工程.
背景情况:
- 民航面临着关于空气质量和环境影响的越来越严格的审查.
- 现在的法规针对的是非挥发性颗粒物 (nvPM) 质量和数量排放.
- 颗粒大小分布 (PSD) 对于评估航空 nvPM 的环境影响至关重要,尽管没有强制进行测量.
研究的目的:
- 介绍各种轮风扇发动机的颗粒大小分布 (PSD) 特征的综合数据集.
- 为了研究PSD,nvPM数量与质量比 (N/M) 和发动机推力之间的关系.
- 从N/M数据开发经验相关性来预测PSD参数.
主要方法:
- 在19种轮风扇类型的42个发动机上进行了排放测试,使用欧洲和瑞士的NVPM参考采样系统.
- 与 nvPM 采样一起进行并行 PSD 测量.
- 分析了几何平均直径 (GMD),N/M和推力之间的相关性.
主要成果:
- 发动机输出GMD与N/M和推力有很强的相关性,范围从7到52nm.
- 发动机出口的几何标准偏差在1.7到2.5之间,平均值为2.05.
- 建议的经验相关性来预测排放认证发动机的GMD从N/M.
结论:
- 该研究为评估航空业对环境的影响提供了有价值的PSD数据.
- 开发出来的相关性可以帮助改进传统发动机的排放模型.
- 调查结果支持对航空业对气候和空气质量的非二氧化碳影响进行更好的评估.
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