【摘要】 教室内空气品质直接影响学生的身体健康和学习效率,而新风系统对室内CO₂和PM_2.5浓度影响显著。针对以室内CO₂和PM_2.5浓度为主要指标的室内空气品质提升需求,对某国际学校多个教学楼新风系统现状进行诊断测试和测试结果总结分析,探讨了室内空气品质提升所涉及的新风系统设计关键参数,例如人均新风量、室外PM_2.5计算浓度、室内PM_2.5浓度标准的确定,以及PM_{2. 5}过滤效率与现行空调系统过滤效率关系等关键问题,并结合国际学校具体案例提出具体改造建议,为后续室内空气品质提升改造提供参考。更多还原

【Abstract】 Indoor air quality affects students’ studying performance and health which determined by fresh air system. Aiming at the request of improvement of indoor air quality with indoor CO₂ and PM_2.5 as main indexes,the paper summarizes testing results of fresh air systems in several teaching buildings,and researches the key points such as people outdoor air rate,outdoor PM_2.5 design concentration,indoor PM_2.5 concentration,the relation between particle counting and sizing efficiency and arrestance efficiency in the improvement,presents the schematic rectification proposal combined with current air conditioning system and provides guidance for subsequent rectification to improve indoor air quality.更多还原