| Issue |
E3S Web of Conf.
Volume 396, 2023
The 11th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings (IAQVEC2023)
|
|
|---|---|---|
| Article Number | 03023 | |
| Number of page(s) | 8 | |
| Section | Energy Efficient and Healthy HVAC systems | |
| DOI | https://doi.org/10.1051/e3sconf/202339603023 | |
| Published online | 16 June 2023 | |
Subject experiment on personal air-conditioning airflow using a vortex ring
Department of Architecture and Urban Design, Faculty of Science and Engineering, Ritsumeikan University, Shiga, Japan
* Corresponding author: tomoyuki@se.ritsumei.ac.jp
A personal air conditioning system using vortex rings, which are characterized by their linearity and low diffusivity, is developed in this study. The authors have clarified the characteristics of the vortex ring airflow by LES (unsteady CFD) and full‐scale experiments. However, the airflow type and worker's comfort using vortex rings as an air conditioning system has not been clarified yet. As a result of the subject experiments, it became clear that air conditioning with vortex rings cooled the subjects better than conventional air conditioning and improved their sense of comfort with respect to the airflow. In addition, it was found that airflow to the neck was more effective since the subjects were less likely to feel the airflow at the top of the head due to the resistance of the hair on the head. The effectiveness of the vortex ring as a personal air conditioning system was clarified, enabling relaxation of the room temperature setting. The comfortability of the airflow sensation provided by the vortex ring was also examined when further airflow was given.
© The Authors, published by EDP Sciences, 2023
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