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Building materials VOC emissions―a systematic parametric study

机译:建材VOC排放量—系统的参数研究

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Mathematical models that are used to predict VOC emission of building materials require four basic parameters as input: VOC diffusion coefficient of the material (D_m), VOC partition coefficient (k), material thickness (H) and surface air velocity (v). This paper describes a four-factor simulation design and a statistical procedure for analyzing material VOC time (Y) sensitivities with respect to these four parameter variations and their interaction effects. The parameter effects and their interaction effects are discussed in term of Omega Squared (ω~2). ω~2 is the ratio of sum of squared deviation of a factor to total sum of squared deviation (SS_T). The statistical analysis involving the comparison of ω~2 of the four parameters and their interactions indicates that two parameters, D_m and H, and their interaction, D_m x H, significantly affect the material VOC time. Other parameters (k, v) and interactions (D_m x k, D_m x v, k x H, k x v, H x v, D_m x k x H, D_m x k x v, D_m x H x v, k x H x v, D_m x k x H x v) have minor effects on the material VOC time. Further statistical analysis of the marginal mean values of the material VOC time for the three significant effects shows that: (1) The material VOC time decreases rapidly as the diffusion coefficient increases. (2) The material VOC time increases significantly as the material thickness increases. (3) There is a clear interaction between the diffusion coefficient and material thickness. As the material thickness increases, the material VOC time increase rate is smaller at high diffusion coefficient than at low diffusion coefficient.
机译:用于预测建筑材料VOC排放的数学模型需要四个基本参数作为输入:材料的VOC扩散系数(D_m),VOC分配系数(k),材料厚度(H)和表面空气速度(v)。本文介绍了一种四因素模拟设计和统计程序,用于分析关于这四个参数变化及其相互作用效应的材料VOC时间(Y)敏感性。讨论了参数效应及其相互作用效应,以ω平方(ω〜2)表示。 ω〜2是一个因子的平方偏差总和与平方偏差总和之比(SS_T)。涉及比较四个参数的ω〜2及其相互作用的统计分析表明,两个参数D_m和H及其相互作用D_m x H对材料VOC时间有显着影响。其他参数(k,v)和交互作用(D_m xk,D_m xv,kx H,kxv,H xv,D_m xkx H,D_m xkxv,D_m x H xv,kx H xv,D_m xkx H xv)的影响较小材料VOC时间。对三个重要影响的材料VOC时间的边际平均值的进一步统计分析表明:(1)随着扩散系数的增加,材料VOC时间迅速减少。 (2)随着材料厚度的增加,材料的VOC时间明显增加。 (3)扩散系数与材料厚度之间存在明显的相互作用。随着材料厚度的增加,高扩散系数下的材料VOC时间增加率小于低扩散系数下的VOC时间增加率。

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