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Thermal environment and ventilation efficiency in a simulated office room with personalized micro-environment and fully mixed ventilation systems
Building and Environment ( IF 7.1 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.buildenv.2020.107445
Weixin Zhao , Simo Kilpeläinen , Risto Kosonen , Juha Jokisalo , Sami Lestinen , Panu Mustakallio

Abstract One of the major challenges in modern buildings is to guarantee healthy indoor air quality and excellent thermal comfort in an energy efficient manner. In this study, the performance of a micro-environment system combined radiant panel and convective flow was designed and compared to an all-air diffuse ceiling ventilation (DCV) system. In the analyzed micro-environment system of personalized ventilation and radiant panel (PVRP), two local personal air terminal devices supplied clean air directly to occupants. The radiant panels were used to satisfy the required cooling load. The results show that the air change efficiency with the PVRP was over 60% which was better than the fully mixing flow (50%). The mean age of air of personalized airflow system was smaller at the micro-environment near the workstation than the DCV despite the airflow rate was much lower. Furthermore, the air temperature near the workstation can be maintained at designed value with the PVRP and the draught rate can be kept at acceptable level. Furthermore, the vertical temperature difference did not cause thermal discomfort with the PVRP system near the workstation.

中文翻译:

具有个性化微环境和全混合通风系统的模拟办公室的热环境和通风效率

摘要 现代建筑面临的主要挑战之一是以节能的方式保证健康的室内空气质量和良好的热舒适性。在这项研究中,设计了结合辐射板和对流的微环境系统的性能,并将其与全空气扩散天花板通风 (DCV) 系统进行了比较。在分析的个性化通风和辐射板 (PVRP) 微环境系统中,两个本地个人空气终端设备直接为居住者提供清洁空气。辐射板用于满足所需的冷却负荷。结果表明,PVRP 的换气效率超过 60%,优于完全混合流(50%)。尽管气流速率低得多,但在工作站附近的微环境中,个性化气流系统的空气平均年龄比 DCV 小。此外,通过PVRP,工作站附近的空气温度可以保持在设计值,并且牵伸率可以保持在可接受的水平。此外,垂直温差不会对工作站附近的 PVRP 系统造成热不适。
更新日期:2021-01-01
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