摘要
为改善中国既有中小学校教室的空气品质,研究综合运用自然通风、机械通风和混合通风来实现低能耗目标下的舒适和健康的教室内环境.首先,通过实测和数值仿真,对比研究封闭教室内CO_(2)的浓度分布及其动态变化规律.其次,构建教室CO_(2)实时监测系统,提出低成本需求控制教室通风系统.然后利用CFD仿真模拟,从气流特性、热舒适性及室内空气质量三方面,比较负压通风、正压通风和自然通风三种通风模式的差异.最后,提出不同气候条件下的教室通风策略.通过对窗户和风扇的简单设计的低成本改造和控制技术,即可提高教室空气品质和热舒适,研究可应用与数以万计的中小学教室的更新改建.
In order to improve the air quality of existing primary and secondary school classrooms in China,this study explores how to comprehensively use natural ventilation,mechanical ventilation and hybrid ventilation to achieve a comfortable and healthy indoor environment with low energy consumption.Firstly,the distribution of CO_(2)concentration and its dynamic changes in closed classrooms are compared through actual measurements and numerical simulations.Secondly,a real-time monitoring system for classroom CO_(2)is constructed,and a low-cost demand-controlled classroom ventilation system is proposed.Then,CFD simulation is used to compare the differences between the three ventilation modes of negative-pressure ventilation,positive-pressure ventilation and natural ventilation in terms of airflow characteristics,thermal comfort and indoor air quality,and finally,classroom ventilation strategies under different climatic conditions are proposed.Classroom air quality and thermal comfort can be improved through low-cost retrofitting and control techniques with simple designs for windows and fans,and the study can be applied to the upgrading of tens of thousands of primary and secondary school classrooms.
作者
许懿
马思悦
曹瑞华
XU Yi;MA Siyue;CAO Ruihua(Architectural design and Research Institute,Xi′an Univ.of Arch.&Tech,Xi′an 710055,China;School of Architecture,Xi′an Univ.of Arch.&Tech,Xi′an 710055,China;Xi′an XD Power Systems Co.,Ltd.,Xi′an 710075,China)
出处
《西安建筑科技大学学报(自然科学版)》
北大核心
2025年第4期615-624,共10页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家十四五重点研发计划(2022YFC3802701)
陕西省科技厅项目(2022JM-272)。
关键词
教室空气品质
教室热舒适
低能耗
混合通风
智能控制
classroom air quality
classroom thermal comfort
low energy consumption
hybrid ventilation
intelligent control
