平板建材挥发性有机化合物单面散发模型及应用

工程热物理学报 , 2004, 25(3): 451-453.

1.清华大学建筑技术科学系,北京,100084

2.清华大学建筑技术科学系,北京,100084

基金项目: 清华大学校科研和教改项目(200007005)

A GENERAL MODEL FOR ANALYZING VOC EMISSION CHARACTERISTICS FROM BUILDING MATERIALS AND ITS APPLICATION

本文建立了平板建材有机挥发性化合物(VOCs)单面散发模型,并给出了其分析解.与文献中现有模型不同,该模型没有假设材料内部初始浓度均匀.模型经实验验证.藉模型和数值分析,弄清了VOCs初始浓度分布对散发特性的影响:对于材料厚度相对小,扩散系数相对大的长期散发过程,可以忽略初始浓度对散发的影响.

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