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Performance evaluation of contaminant removal and air quality control for local ventilation systems using the ventilation index Net Escape Velocity

机译:使用通风指数净逸出速度评估局部通风系统的污染物去除和空气质量控制的性能

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摘要

A concept of ventilation efficiency, Net Escape Velocity (NEV), developed by authors presents the net and integrated velocity of contaminant transport by convection and diffusion effect at a point within the room. The NEV is the effective ventilation rate with a velocity scale determining the contaminant concentration at a target point and can be expressed by vector and scalar quantities. It is the most important characteristic of NEV concept. An expanded concept of NEV (NEV*), under an assumption that the inflow flux of a contaminant on the control volume is a contaminant generation, was proposed. We believe that the NEV and NEV* distributions can provide helpful information for ventilation design to control contaminants.
机译:作者开发的通风效率概念净逃逸速度(NEV)通过对流和扩散效应在房间内某个点呈现污染物传输的净速度和积分速度。 NEV是有效的通风率,其速度标度决定了目标点处的污染物浓度,可以用矢量和标量表示。这是NEV概念的最重要特征。提出了NEV(NEV *)的扩展概念,该假设是假设污染物在控制体积上的流入流量是污染物的产生。我们相信NEV和NEV *分布可以为通风设计以控制污染物提供有用的信息。

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