材料VOC/SVOC散发解析模型及参数测定方法研究
Research on the VOC/SVOC Emission Analytical Model and Parameter Measurement Method
张宣凯 1熊建银1
作者信息
- 1. 北京理工大学机械与车辆学院,北京 100081
- 折叠
摘要
室内建材和家具散发的挥发性有机物(VOC)及半挥发性有机物(SVOC)对人类健康的影响不容忽视.本文首先建立了材料中VOC及SVOC散发过程的统一解析模型,其有助于实现源/汇特性的统一表征及对污染物的综合控制.并利用混合优化方法来获得模型中的散发关键参数,包括初始可散发浓度C0、扩散系数Dm、材料/空气分配系数Km及环境舱表面/空气分配系数Ks.基于实木家具中VOC散发的实验数据,以及文献中一种阻燃剂SVOC散发的数据,验证了模型及方法的有效性.此外,还分析了不同温度下SVOC长期散发对材料表面气相浓度(Y0)的影响规律.结果表明,温度较高或散发时间较长时,用C0代替传统研究中的y0作为散发关键参数更为合适.
Abstract
The impact of emitted volatile organic compounds(VOC)and semi-volatile organic compounds(SVOC)from indoor building materials and furniture cannot be ignored.This study firstly establishes a unified analytical model to describe the emissions of VOC/SVOC from materials,which is helpful for the achievement of general characterization of source/sink behaviors and the integrated control of pollutants.A hybrid optimization method is used to measure the three key parameters in the model,including the initial emittable concentration(C0),diffusion coefficient(Dm),material/air partition coefficient(Km),and surface/air partition coefficient(Ks).Data of VOC emissions from a solid wood furniture and SVOC emissions a flame retardant in literature are used to verify the validity of the model and method.Moreover,the impact of long-term SVOC emission on the gas-phase concentration along the material surface(y0)at different temperatures is analyzed.Results indicate that,with the increase of temperature or emission time,it is more appropriate to use C0 as a key emission parameter,rather than the widely used y0 in prior studies.
关键词
挥发性有机物(VOC)/半挥发性有机物(SVOC)/散发关键参数/传质/室内环境Key words
volatile organic compounds(VOC)/semi-volatile organic compounds(SVOC)/key emission parameters/mass transfer/indoor environment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据