摘要
已有研究表明,温度是影响建材散发或吸附挥发性有机化合物(Volatile Organic Compounds,VOCs)的重要因素之一。而VOC扩散系数Dm和分离系数Kma是描述多孔建材吸附VOC特性的2个重要参数。因此,研究温度与这2个参数的关联有着重要意义。本文基于传质理论推导了温度与建材中VOC扩散系数的关联式,且该关联式得到了实验数据的较好验证。本文结论将有利于实际环境条件下室内空气品质的评估,有利于有效控制室内VOC浓度。
Volatile organic compound（VOC） diffusion coefficient Dm and partition coefficient Kma are two important parameters to predict VOC emission and sorption characteristics of porous building materials.Previous studies indicated that Dm and Kma might be strongly affected by temperature T.Therefore,understanding the influences of environmental parameters on Dm and Kma was essential for evaluating the indoor environmental quality.In this paper,a new correlation between Dm and T was derived based on the mass transfer theory.Furthermore,the validation work was carried out using a series of existed experimental data,the modeling results using the new correlation were agree well with the experimental data.As a result,this correlation was useful for evaluating the indoor air quality under different environmental conditions and controlling the indoor concentration of VOC.
出处
《建筑科学》
北大核心
2011年第6期67-72,共6页
Building Science
基金
国家自然科学基金项目(50878112)
关键词
温度
扩散系数
多孔材料
吸附
temperature
diffusion coefficient
porous material
sorption
