通过物联网驱动的声学和视觉CO2反系统改善教室的空气质量和通风
Nidhi Rawat1, Prashant Kumar2, Sarkawt Hama1
1Global Centre for Clean Air Research (GCARE), School of Engineering, Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, United Kingdom.
The Science of the total environment
|May 3, 2025
概括
基于物联网 (IoT) 的二氧化碳显示系统 (SAVE单元) 通过降低二氧化碳水平,改善了课堂空气质量. 然而,它增加了能源消耗,并强调了需要平衡通风与热舒适的需要.
科学领域:
- 环境科学 环境科学
- 建筑科学 建筑科学
- 室内空气质量 室内空气质量
背景情况:
- 课堂通风在很大程度上取决于教师的窗户和门操作行为.
- 学校的室内空气质量不佳与健康和学习成果有关.
- 现有的通风策略往往缺乏实时反以获得最佳性能.
研究的目的:
- 评估基于物联网的二氧化碳自控显示系统 (SAVE单元) 对课堂空气质量和热舒适度的影响.
- 评估视觉和声学警报在促使通风行为的有效性.
- 了解自然通风的教室中空气质量,热舒适度和能源消耗之间的相互作用.
主要方法:
- 实现了一个基于物联网的SAVE单元,具有用于CO2监控的视觉和声学报警.
- 在基线,视觉报警和视听报警场景中收集空气质量数据 (CO2,PM度).
- 分析了教师与二氧化碳水平,温度和警报触发器有关的窗户打开行为.
主要成果:
- 通过警报系统,SAVE单位将二氧化碳水平降低了19-19.5%.
- 颗粒物 (PM) 度随着窗户的打开而增加,但仍在世卫组织的限制范围内.
- 教师对通风的决定主要取决于热舒适度,导致在寒冷的日子里二氧化碳的增加.
结论:
- 节约单元有效地减少了教室的二氧化碳,但需要平衡能源效率和热舒适性.
- 需要一个整体的信号系统,整合温度和空气质量,以实现最佳的通风管理.
- 实时,数据驱动的通风策略对于健康和舒适的学习环境至关重要.
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