Abstract Air curtain range hood was developed recently for its beneficial effect on preventing spillage of pollutant and maintenance of good indoor air quality in kitchens. Orthogonal experiments were conducted in this study to investigate factors that affect the function of the air curtain range hood. The contaminant removal efficiency was measured and employed as an assessment index for variance analysis. Single-factor analysis based on the significance level was conducted using computational fluid dynamics method and experiment including tracer gas and visualization experiment. Results showed that exhaust rate was the main factor affecting the performance of air curtain range hood, followed by intensity of heat source, air curtain velocity, interaction between air curtain velocity and slot width, air curtain slot width, and air curtain angle. Compared with conventional range hoods (range hoods without air curtain), contaminant removal efficiency was enhanced with the air curtain range hood. The single-factor analysis defined three jet patterns, namely, “invalid,” “enhanced,” and “destructive” jets. The range of “enhanced jet” was then proposed. Assessment of another air supply parameter, air curtain angle, demonstrated that it had no significant influence on the performance of the air curtain range hood. The results of this study can provide additional details and help in the efficient design of air curtain range hoods for residential kitchens.

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使用污染物去除效率评估空气幕抽油烟机的性能：实验和数值研究

摘要 风幕式抽油烟机因其在厨房内防止污染物外溢和保持良好室内空气质量的有益效果而被开发出来。本研究通过正交实验研究影响气帘抽油烟机功能的因素。污染物去除效率被测量并用作方差分析的评估指标。使用计算流体动力学方法和实验包括示踪气体和可视化实验进行基于显着性水平的单因素分析。结果表明，排气量是影响风幕抽油烟机性能的主要因素，其次是热源强度、风幕速度、风幕速度与缝隙宽度的相互作用、风幕缝隙宽度和风幕角度。与传统抽油烟机（无风幕抽油烟机）相比，空气幕抽油烟机提高了污染物去除效率。单因素分析定义了三种喷射模式，即“无效”、“增强”和“破坏性”喷射。然后提出了“增强型喷射”的范围。评估另一个送风参数，即风幕角度，表明它对风幕抽油烟机的性能没有显着影响。这项研究的结果可以提供更多的细节，并有助于住宅厨房空气幕抽油烟机的有效设计。”和“破坏性”喷气式飞机。然后提出了“增强型喷射”的范围。评估另一个送风参数，即风幕角度，表明它对风幕抽油烟机的性能没有显着影响。这项研究的结果可以提供更多的细节，并有助于住宅厨房空气幕抽油烟机的有效设计。”和“破坏性”喷气式飞机。然后提出了“增强型喷射”的范围。评估另一个送风参数，即风幕角度，表明它对风幕抽油烟机的性能没有显着影响。这项研究的结果可以提供更多的细节，并有助于住宅厨房空气幕抽油烟机的有效设计。