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Coupled heat and mass transfer in a counter flow hollow fiber membrane module for air humidification

机译：逆流中空纤维膜组件中的传热和传质耦合，用于空气加湿

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摘要

Hollow fiber membrane based air humidification offers great advantages over the traditional methods because the liquid water droplets are prevented from mixing with the process air, while water vapor can permeate through the membranes effectively. The novelty in this research is that the coupled heat and moisture transport in a hollow fiber membrane module for air humidification is investigated, both numerically and experimentally. The air stream and the water stream flow in a counter flow arrangement. It is found that the membranes play a key role in humidification performances. For sensible heat transfer, both the liquid side and the membrane side resistance can be neglected, while the total heat transfer coefficients are determined by the air side heat transfer coefficients. In contrast, in mass transfer, only the liquid side resistance can be neglected, while the total mass transfer coefficients are co-determined by membrane properties and the air side convective mass transfer coefficients.
机译：基于中空纤维膜的空气加湿提供了优于传统方法的巨大优势，因为可以防止液态水滴与工艺空气混合，而水蒸气可以有效地渗透通过膜。这项研究的新颖之处在于，通过数值和实验研究了用于空气加湿的中空纤维膜组件中热与湿的耦合传输。空气流和水流以逆流布置流动。发现膜在加湿性能中起关键作用。对于显热传递，可以忽略液体侧和膜侧的电阻，而总的热传递系数由空气侧的热传递系数确定。相反，在传质中，仅液体侧的阻力可以忽略，而总传质系数由膜特性和空气侧对流传质系数共同确定。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2011年第6期|p.1055-1063|共9页
  • 作者

    Li-Zhi Zhang; Si-Min Huang;

  • 作者单位

    Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical Engineering,South China University of Technology, Guangzhou 510640, China;

    Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical Engineering,South China University of Technology, Guangzhou 510640, 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

    heat transfer; mass transfer; hollow fiber membrane module; humidification;

    机译：传播热量;传质中空纤维膜组件;加湿;

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