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The application of an air curtain range hood in reducing human exposure to cooking pollutants
Building and Environment ( IF 7.4 ) Pub Date : 2021-07-30 , DOI: 10.1016/j.buildenv.2021.108204
Lipeng Lv 1 , Lingjie Zeng 2 , Yuhang Wu 1 , Jun Gao 1 , Wuhao Xie 1 , Changsheng Cao 1 , Jing Zhang 1
Affiliation  

The function of air curtain range hood in improving human exposure was investigated by conducting experiment and CFD simulation. The intake fraction was estimated to reflect the effect of the air curtain. Factors affecting human exposure, including the exhaust rate, heat source intensity, air supply angle, air supply velocity, and slot width of the air curtain, were incorporated according to an orthogonal design. To comprehend the roles that the air curtain performed, the characteristics of flow and concentration field were captured through visualization experiment and CFD method. Furthermore, the effect of using an air curtain to resist the impact of human walking on human exposure was examined. The exhaust rate, heat source intensity, and air supply angle were significant factors that affect human exposure with a significance level of 0.01. Compared with the traditional range counterpart, air curtain range hood could decrease the intake fraction by factor of 1.5–5. Air curtain could reduce turbulent intensity around the range hood and improve local airflow organization. Meanwhile, air curtain would considerably protect walking humans from exposure to pollutants. The outcome of this study could help us understand the effect of air curtain range hood with a comprehensive perspective.



中文翻译:

空气幕抽油烟机在减少人体暴露于烹饪污染物中的应用

通过实验和CFD模拟研究了风幕式抽油烟机在改善人体暴露方面的作用。估计进气分数以反映空气幕的影响。根据正交设计纳入影响人体暴露的因素,包括排气率、热源强度、送风角度、送风速度和空气幕的狭缝宽度。为理解空气幕所起的作用,通过可视化实验和CFD方法捕获了流场和浓度场的特征。此外,还研究了使用空气幕来抵抗人类行走对人体暴露的影响的效果。排风量、热源强度和送风角度是影响人体暴露的显着因素,显着性水平为0.01。与传统的抽油烟机相比,空气幕抽油烟机可以将进气分数降低 1.5-5 倍。风幕可以降低抽油烟机周围的湍流强度,改善局部气流组织。同时,空气幕将大大保护行走的人类免受污染物的影响。本研究的结果可以帮助我们全面了解风幕抽油烟机的效果。

更新日期:2021-08-03
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