Abstract Indoor air quality is affected by both emissions of Volatile Organic Compounds (VOC) from materials and ventilation. The purpose of this paper is to provide a multi-scale analysis of the impact of ventilation on VOC emissions to highlight the individual behaviours of VOCs emitted from a wood particleboard. Emissions were studied in an experimental chamber by (i) assessing the effect of ventilation on emission rates and (ii) determining intrinsic parameters (Ki, C0,i, Di) describing the VOC mass transfer from the material to air. The overall assessment of the effect of ventilation indicated that the air change rate could significantly affect the behaviour of individual compounds. Typically, the formaldehyde emission rate increased from 214.6 to 274.2 μg.m−2.h−1 when air change rate varies from 2.5 to 5.5 h−1, whereas the air speed had no influence on emission rates for any VOC monitored. These results agree with the key emission parameters (partitioning and diffusion coefficients) which were higher for formaldehyde than those for other compounds. VOC diffusion related to VOC mass transfer from a material's surface to the surrounding air was the limiting step in VOC emission for the solid material studied, and should therefore be considered when developing ventilation strategies.

中文翻译：

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室内环境中个体 VOC 的行为：通风如何影响材料的排放

摘要 室内空气质量受到材料和通风中挥发性有机化合物 (VOC) 排放的影响。本文的目的是提供通风对 VOC 排放影响的多尺度分析，以突出从木刨花板排放的 VOC 的个体行为。通过 (i) 评估通风对排放率的影响和 (ii) 确定描述从材料到空气的 VOC 质量转移的内在参数 (Ki, CO,i, Di) 在实验室中研究排放。对通风效果的总体评估表明，换气率会显着影响单个化合物的行为。通常，当空气变化率从 2.5 到 5.5 h-1 变化时，甲醛释放率从 214.6 增加到 274.2 μg.m-2.h-1，而空气速度对任何监测到的 VOC 的排放率没有影响。这些结果与甲醛高于其他化合物的关键排放参数（分配和扩散系数）一致。与从材料表面到周围空气的 VOC 质量转移相关的 VOC 扩散是所研究固体材料 VOC 排放的限制步骤，因此在制定通风策略时应予以考虑。