电场作用下建筑材料中有机挥发物迁移过程的研究

项目名称： 电场作用下建筑材料中有机挥发物迁移过程的研究

项目编号： No.51276041

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 能源与动力工程

项目作者： 陈振乾

作者单位： 东南大学

项目金额： 80万元

中文摘要： 建筑物中有机挥发物散发的研究对空气品质的控制具有重要价值。本申请项目主要研究在高压电场作用下建筑材料中有机挥发物的耦合迁移过程。首先基于非平衡热力学方法，分析在高压电场作用下建筑材料中热、有机挥发物耦合迁移的驱动力，建立在电势、温度和有机挥发物浓度梯度下迁移的唯像方程，分析各唯像方程中迁移系数；以电镜扫描实验与信息图像处理技术为基础，基于分形几何理论，研究多孔建筑材料中的孔隙结构与形态特征，研究建筑材料的孔隙结构、孔隙体积形态特征以及室内环境条件对耦合迁移各系数的影响；建立多孔建筑材料中有机挥发物迁移的分形网络通道模型，运用格子-玻尔兹曼方法（LBM）模拟研究建筑材料中热和有机挥发物耦合迁移过程。实验研究高压电场作用下建筑材料中有机挥发物耦合迁移过程，对不同高压电场强度、方向以及与热耦合作用下建筑材料中有机挥发物迁移进行实验研究。

中文关键词： 可挥发性有机挥发物；多孔建材；分形；静电场；格子-波尔兹曼方法

英文摘要： Study on the emission of volatile organic compounds in the buildings is great valueable for air quality control. The coupled migration process of volatile organic compounds in building materials with the high-voltage electric fields is mainly studied in this project. The driving forces of coupled heat and volatile organic compounds migration in building materials with the high-voltage electric fields are firstly analyzed based on the method of non-equilibrium thermodynamics. The phenomenological equations of migration with gradients of electric potential, temperature and concentration of volatile organic compounds are estableshed. And the migration coefficients in the phenomenological equation are analyzed. The pore structure and morphological characteristics in porous building materials are studied based on the experiments of scanning electron microscopy, information on image processing technology and the theory fractal geometry. The effects of pore structure, pore volume of morphological characteristics and indoor environmental conditions on these coupled migration coefficient are studied. The fractal network channel model on the migration of volatile organic compounds in porous building materials is established. The Lattice-Boltzmann method (LBM) is used to simulate the coupled migration process of heat and v

英文关键词： volatile organic compounds；porous building materials；fractal；electrostatic field；lattice-Boltzmann model