摘要
通过实验实测和理论计算结合的方法研究自然通风和机械通风状态下,室内CO2浓度与建筑气密性的关系。设计了窗户密闭和开启的三组建筑气密性工况,在室外环境条件相近的情况下,利用鼓风门法测试了室内的自然通风量,同时测定记录了室内的CO2浓度变化。利用实验结果结合全面通风计算理论,计算了机械通风情况下三组工况室内CO2浓度变化。结果表明,窗户微微开启(5°)相较房间密闭状态在自然通风情况下室内CO2浓度可下降20%;机械通风情况下可降低10%,同时,对空调耗电量影响较小,运行4.5 h仅相差0.05kW·h。
The methods of experimental measurements and theoretical calculation are used to research the relationship of indoor CO2 concentration and building air tightness in natural ventilation and mechanical ventilation, respectively. Three experimental conditions of windows closed and opened are designed. The blower door test method is used to test natural ventilation, and the indoor CO2 concentration is tested. The general ventilation theoretical calculation formula is used to calculate the indoor CO2 concentration of mechanical ventilation conditions. The results show that the indoor CO2 concentration difference of windows opened and closed is about 20% in natural ventilation, and it is 10% in mechanical ventilation.
出处
《实验室研究与探索》
CAS
北大核心
2014年第4期37-39,共3页
Research and Exploration In Laboratory
基金
上海大学生创新创业训练计划资助(SH2011101)
关键词
CO2浓度
建筑气密性
鼓风门法
CO2 concentration
building air tightness
blower door
