A Method for Measuring the Diffusion and Partition Coefficients of Volatile Organic Compounds in Barrier Layers
Barrier layers on the surface of building materials play an important role in reducing the volatile organic compounds (VOCs) source emission, which suffers a lack of data about their transport properties such as diffusion coefficient (D) and partition coefficient (K). This paper deals with a method that aims to simultaneously determine the VOCs diffusion and partition coefficients in barrier layers. Pilot experiments were run on a kind of barrier layer used as decorative layer over the wood-based panels with formaldehyde as the target VOC. Results showed the values of D and K of formaldehyde in the decorative layer were 7.7±0.Sx 10-12 m2/s and 272±36, respectively. Sensitivity analysis indicated the feasibility of simultaneous estimation of D and K by the present method. In addition, the measured values were used to predict their impact on the VOCs emission from building materials based on a multi-layer mass transfer model.
Indoor air quality (IAQ) Volatile organic compounds (VOCs) Barrier layer Field and laboratory emission cell (FLEC) Proton transfer reaction mass spectrometer (PTR-MS)
Zhongkai He Wenjuan Wei Yinping Zhang
Department of Building Science,Tsinghua University,Beijing 100084 China School of Energy and Power,Huazhong University of Science and Technology,Wuhan 430074 China
国际会议
The 6th International Symposium on Heating,Ventilating and Air Conditioning(第六届国际暖通空调学术会议)
南京
英文
1101-1108
2009-11-06（万方平台首次上网日期，不代表论文的发表时间）