Optimal control strategy for a cutting-edge hybrid ventilation system in classrooms: Comparative analysis based on air pollution levels across cities

IF 7.1 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Seyedkeivan Nateghi , Amirmohammad Behzadi , Jan Kaczmarczyk , Pawel Wargocki , Sasan Sadrizadeh
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引用次数: 0

Abstract

Natural ventilation has the potential to enhance indoor air quality in classrooms with elevated CO2 levels, although it may introduce outdoor pollutants. This study introduces a novel controller for automatic windows that simultaneously monitors outdoor air pollution and temperature, synchronizing window openings with mechanical ventilation system to create a comfortable, healthy, and energy-efficient indoor environment. The practicality of the proposed controller is assessed for a classroom in Delhi, Warsaw, and Stockholm, each with contrasting climates and outdoor pollution levels, specifically PM2.5 and NO2. The controller parameters are optimized for each city using a non-dominated sorting genetic algorithm (NSGA-II) to find the best trade-off between thermal comfort, CO2 levels, and energy consumption. The results show that the controller successfully met the indoor air quality standards in all cities; however, its operation was significantly influenced by the climate and pollution levels. While natural ventilation was utilized for 44% and 31% of the year in Warsaw and Stockholm, respectively, it was used for only 11% of the year in Delhi, the most polluted city. The optimization process significantly reduced energy use across all cities while also successfully reducing indoor CO2 concentrations. Although thermal comfort decreased slightly, it remained within acceptable thermal comfort conditions.
教室中尖端混合通风系统的优化控制策略:基于城市空气污染水平的比较分析
自然通风有可能提高二氧化碳浓度较高的教室的室内空气质量,尽管它可能会引入室外污染物。本研究介绍了一种新型自动开窗控制器,可同时监测室外空气污染和温度,使开窗与机械通风系统同步,从而创造舒适、健康和节能的室内环境。在德里、华沙和斯德哥尔摩的一间教室中评估了拟议控制器的实用性,三地的气候和室外污染水平(尤其是 PM2.5 和 NO2)截然不同。使用非优势排序遗传算法(NSGA-II)对每个城市的控制器参数进行了优化,以找到热舒适度、二氧化碳水平和能耗之间的最佳平衡点。结果表明,控制器在所有城市都成功地达到了室内空气质量标准,但其运行受到气候和污染程度的显著影响。在华沙和斯德哥尔摩,一年中分别有 44% 和 31% 的时间使用自然通风,而在污染最严重的德里,一年中只有 11% 的时间使用自然通风。优化过程大大降低了所有城市的能耗,同时也成功降低了室内二氧化碳浓度。虽然热舒适度略有下降,但仍在可接受的热舒适度范围内。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Building and Environment
Building and Environment 工程技术-工程:环境
CiteScore
12.50
自引率
23.00%
发文量
1130
审稿时长
27 days
期刊介绍: Building and Environment, an international journal, is dedicated to publishing original research papers, comprehensive review articles, editorials, and short communications in the fields of building science, urban physics, and human interaction with the indoor and outdoor built environment. The journal emphasizes innovative technologies and knowledge verified through measurement and analysis. It covers environmental performance across various spatial scales, from cities and communities to buildings and systems, fostering collaborative, multi-disciplinary research with broader significance.
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