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Relationship between pressure drop and face velocity for electrospun nanofiber filters

机译：静电纺丝纳米纤维过滤器的压降与表面速度之间的关系

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摘要

Nanofiber filters are typically fabricated using the electrospinning technique, which can reach high particle removal efficiency with relatively low air resistance because of the gas slip effect. They have a great potential for applications in the filtration units of heating, ventilation, and air-conditioning (HVAC) systems to reduce the fan energy consumption. This study systematically examined the relationship between pressure drop and face velocity for electrospun nanofiber filters. Experimental data of 122 nanofiber filters were collected from the literature to validate the theory regarding pressure drop for nanofiber filters proposed in previous studies. The linear regressions between pressure drop and face velocity showed that 89% of the tested nanofiber filters had an R-2 value greater than 0.9. Therefore, the pressure drop can be confidently regarded as being proportional to the face velocity for nanofiber filters. This conclusion was further confirmed by additional experimental measurements conducted in this study. After confirming the theory, the air resistance coefficients of nanofiber filters were calculated and compared with that of commercial HVAC filters. The comparison showed that the air resistances of nanofiber filters with careful design could be lower than that of the commercial filters with similar particle removal efficiency. (C) 2017 Elsevier B.V. All rights reserved.
机译：纳米纤维过滤器通常使用静电纺丝技术制造，由于气滑效应，其可以在相对较低的空气阻力下达到较高的颗粒去除效率。它们在加热，通风和空调（HVAC）系统的过滤单元中具有巨大的应用潜力，可减少风扇的能耗。这项研究系统地检查了电纺纳米纤维过滤器的压降和表面速度之间的关系。从文献中收集了122种纳米纤维过滤器的实验数据，以验证先前研究中提出的有关纳米纤维过滤器压降的理论。压降与表面速度之间的线性回归表明，经测试的89％纳米纤维过滤器的R-2值大于0.9。因此，对于纳米纤维过滤器，压降可以确信地与表面速度成正比。该研究中进行的其他实验测量进一步证实了这一结论。理论证实后，计算出纳米纤维过滤器的空气阻力系数，并将其与商用HVAC过滤器的空气阻力系数进行比较。比较结果表明，经过精心设计的纳米纤维过滤器的空气阻力可能会比具有相似颗粒去除效率的商业过滤器的空气阻力低。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Energy and Buildings》 |2018年第2期|987-999|共13页
  • 作者

    Xia Tongling; Bian Ye; Zhang Li; Chen Chun;

  • 作者单位

    Chinese Univ Hong Kong, Dept Mech & Automat Engn, Shatin 999077, Hong Kong, Peoples R China;

    Chinese Univ Hong Kong, Dept Mech & Automat Engn, Shatin 999077, Hong Kong, Peoples R China;

    Chinese Univ Hong Kong, Dept Mech & Automat Engn, Shatin 999077, Hong Kong, Peoples R China;

    Chinese Univ Hong Kong, Dept Mech & Automat Engn, Shatin 999077, Hong Kong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nanofiber filter; Filtration; Particulate matters; Particles; Indoor air quality; Electrospinning;

    机译：纳米纤维过滤器;过滤;颗粒物;颗粒;室内空气质量;静电纺丝;

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