基于排污效率和吹风感指数的客舱空调最佳送风方式

doi:10.7527/S1000-6893.2021.25266

流体力学与飞行力学

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基于排污效率和吹风感指数的客舱空调最佳送风方式

林家泉, 戴仕卿

中国民航大学电子信息与自动化学院, 天津 300300

收稿日期:2021-01-13 修回日期:2021-04-22 发布日期:2021-04-21
通讯作者: 戴仕卿,E-mail:1013436267@qq.com E-mail:1013436267@qq.com

Optimal air supply mode of aircraft cabin based on removal effectiveness and draft rating

LIN Jiaquan, DAI Shiqing

College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China

Received:2021-01-13 Revised:2021-04-22 Published:2021-04-21

摘要/Abstract

摘要： 针对飞机空调恒值信号送风工况下,客舱内发动机引气污染物清除效果不佳的问题,建立了5排座Boeing 737客舱仿真模型。结合粒子图像测速技术(PIV)验证客舱仿真模型合理性,以方波信号代替恒值信号对客舱送风,模拟计算了客舱天花板送风、侧壁送风、混合送风3种方式下舱内气流特征及引气污染物分布特性,提出将排污效率和吹风感指数相结合,确定飞机客舱最佳送风方式的方法,使用吹风感指数校核气流增速下乘客的热舒适性,再根据排污效率指标评估出最优送风工况。结果表明:相较于恒值信号送风,采用方波信号送风可以使得混合送风方式和侧壁送风方式排污效率分别提高8.2%和16.3%,且混合送风方式具有最优的排污效率,而天花板送风方式可将乘客呼吸区污染物浓度降至最低。

关键词: 飞机客舱, 吹风感指数, 方波送风, 颗粒污染物, 排污效率

Abstract: To solve the problem of poor removal effect of bleed air pollutants in the cabin under constant signal air supply condition of aircraft air conditioning, a five-row Boeing 737 cabin simulation model is established, and the rationality of the cabin simulation model verified by the Particle Image Velocimetry (PIV). Then the square wave signal instead of constant signal is used to simulate and calculate the air flow characteristics and bleed air particle distribution characteristics in the cabin in the three modes of ceiling air supply, side wall air supply and combined air supply. A method to determine the optimal air supply mode of aircraft cabins by combining the removal effectiveness and draft rating index is proposed. The thermal comfort of passengers is checked by the draft rating index, while the optimal air supply condition evaluated by the contaminant removal effectiveness. The results show that using square wave signal air supply can improve the contaminant removal effectiveness of combined air supply and side wall air supply by 8.2% and 16.3%, respectively, compared with the constant signal air supply. Moreover, the combined air supply has the optimal contaminant removal effectiveness, and the ceiling air supply can reduce the pollutant concentration to the minimum in the passenger breathing area.

Key words: aircraft cabin, draft rating index, square wave air supply, particulate pollutant, contaminant removal effectivenesshttp

中图分类号:

V245.3

林家泉, 戴仕卿. 基于排污效率和吹风感指数的客舱空调最佳送风方式[J]. 航空学报, 2022, 43(7): 125266-125266.

LIN Jiaquan, DAI Shiqing. Optimal air supply mode of aircraft cabin based on removal effectiveness and draft rating[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(7): 125266-125266.

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E-mail：hkxb@buaa.edu.cn

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基于排污效率和吹风感指数的客舱空调最佳送风方式

Optimal air supply mode of aircraft cabin based on removal effectiveness and draft rating

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