A novel vortex ring personalized ventilation system (VRPV) is proposed for efficiently supplying fresh air to room occupants. A vortex ring generator with a piston‐cylinder is developed for an experimental study of the formation, transportation, and ventilation characteristics of the VRPV. The translational velocity, volume, and fresh air ratio of the vortex rings are studied using high‐speed cameras and tracer gas experiments. According to the results, the categories of the vortex ring volume in the formation stage are studied. It is observed that the velocity of the piston determines the initial translational velocity of the vortex ring, and a fitting equation is proposed to predict the evolution of the translational velocity. The deviation range of the VRPV over different distances is studied, and it is shown to be affected by interference from both the generator and the environment. Finally, the total volumes, fresh air volumes, and fresh air ratios of the VRPV are studied at different distances. The results indicate that, as a personalized ventilation system, the fresh air ratio of the VRPV is up to 159.3% higher than that of a symmetrical round jet within a 0‐4 m range. This shows the excellent application potential of the VRPV for providing high‐efficiency personalized ventilation with lower fresh airflow rates.

中文翻译：

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使用涡流环进行个性化通风的潜在应用。

提出了一种新颖的涡流环个性化通风系统（VRPV），以向室内乘客有效地供应新鲜空气。开发了带有活塞缸的涡流环发生器，用于VRPV的形成，运输和通风特性的实验研究。使用高速摄像机和示踪气体实验研究了涡流环的平移速度，体积和新鲜空气比率。根据结果​​，研究了形成阶段涡环体积的种类。可以看出，活塞的速度决定了涡流环的初始平移速度，并提出了拟合方程来预测平移速度的演变。研究了VRPV在不同距离上的偏差范围，并显示它受到发电机和环境干扰的影响。最后，研究了VRPV在不同距离下的总体积，新鲜空气量和新鲜空气比率。结果表明，作为个性化的通风系统，VRPV的新鲜空气比率比0-4 m范围内的对称圆形喷嘴的新鲜空气比率高159.3％。这显示了VRPV在提供高效个性化通风和降低新鲜空气流量方面的巨大应用潜力。在0-4 m范围内比对称圆形喷嘴高3％。这显示了VRPV在提供高效个性化通风和降低新鲜空气流量方面的巨大应用潜力。在0-4 m范围内比对称圆形喷嘴高3％。这显示了VRPV在提供高效个性化通风和降低新鲜空气流量方面的巨大应用潜力。