室内外空气CO2浓度对最小新风量标准的影响分析
Effect of indoor and outdoor CO2 concentrations on requirement of minimal outdoor air volume
摘要：
针对大气CO2浓度和城市建筑微环境CO2浓度的变化特征，分析指出空调设计时人员最小新风量标准的计算基础应适当调整，基于室内空气CO2浓度分级范围探讨了室内空气品质分级标准下新风量取值范围。结合建筑主要功能房间人员活动强度，计算了不同室内外空气CO2浓度差条件下人员最小新风量标准，并与现行暖通规范指标进行比较，表明房间人员密度较低时室内外空气CO2浓度差取较小值和房间人员密度较高时室内外空气CO2浓度差取较大值时，对应的新风量范围符合现行暖通规范新风量标准。
Abstract：
Based on the change characteristics of the concentration of CO2 in atmosphere and urban micro environment, points out that the calculation basis for standardized value of personal minimal outdoor air volume should be properly adjusted during the design of air conditioning system. Based on the classification range of indoor air CO2 concentration, discusses the range of outdoor air volume by classification standards of indoor air quality (IAQ). Combined with occupant activity intensity in main rooms of buildings, calculates the minimal outdoor air volumes under different CO2 concentration differences between indoor and outdoor air. Compares them with the index in the current HVAC code. The result shows that when smaller value of CO2 concentration difference is taken for coarsely populated room and bigger value is taken for densely populated room, the corresponding outdoor air volume range conforms to that in the current HVAC code.
Keywords:outdoorair,CO2concentration,minimaloutdoorairvolumestandard,indoorairquality,urbanmicroenvironment