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A new mathematical model for irradiance field prediction of upper-room ultraviolet germicidal systems

机译：上层紫外线杀菌系统辐照场预测的新数学模型

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摘要

There has been an increasing interest in the use of upper-room ultraviolet germicidal irradiation (UVGI) system because of its proven disinfection effect for airborne microorganisms. To better design and explore further potential applications of UVGI systems, it is of critical importance to predict the spatial UV intensity in enclosures. In this paper, we developed a new mathematical model to predict spatial radiation intensity for upper-room ultraviolet germicidal irradiation systems. The detail geometries of the lamp and the reflector were removed and replaced by introducing a fictitious irradiation surface near louver slots. The view factor approach was applied to evaluate the UV irradiance in a three-dimensional space with different louver configurations. With this approach no detail meshing of the fixture is required and this leads to significant simplification of the entire systems from modeling perspectives. To validate the model, experiments were performed in a full-scale environmental controlled chamber in which one UVGI fixture was mounted on a sidewall. The UV irradiance was measured by a radiometer. The results predicted by the present model agree very well with the experimental measurements. Factors affect the accuracy of the model was also discussed.
机译：由于已证明对空气传播的微生物具有消毒作用，因此人们越来越关注使用上层紫外线杀菌照射（UVGI）系统。为了更好地设计和探索UVGI系统的进一步潜在应用，预测外壳中的空间UV强度至关重要。在本文中，我们开发了一个新的数学模型来预测上层空间紫外线杀菌照射系统的空间辐射强度。灯和反射镜的详细几何形状被移除，并通过在百叶窗槽附近引入虚拟的辐射表面来代替。应用了视图因子方法来评估具有不同百叶窗配置的三维空间中的紫外线辐射。通过这种方法，不需要对夹具进行详细的网格划分，并且从建模的角度来看，这导致整个系统的显着简化。为了验证模型，在一个全尺寸的环境可控室中进行了实验，其中一个UVGI固定装置安装在侧壁上。通过辐射计测量UV辐照度。本模型预测的结果与实验测量结果非常吻合。还讨论了影响模型准确性的因素。

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  • 来源
    《Journal of Hazardous Materials》 |2011年第2期|p.173-185|共13页
  • 作者

    C.L. Wu; Y. Yang; S.L. Wong; A.C.K. Lai;

  • 作者单位

    Engineering College, Guangdong Ocean University. Zhanjiang 524088. PR China,Department of Building & Construction, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong;

    Engineering College, Guangdong Ocean University. Zhanjiang 524088. PR China,Department of Building & Construction, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong;

    Department of Building & Construction, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong;

    Department of Building & Construction, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    air disinfection; airborne infection; upper-room ultraviolet germicidal; irradiation; uvc; view factor;

    机译：空气消毒;空气传播的感染;上室紫外线杀菌剂;辐照uvc;视图因素;

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