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Experimental study of practical applications of a passive evaporative cooling wall with high water soaking-up ability

机译：高吸水能力的被动式蒸发冷却壁的实际应用实验研究

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摘要

Aimed at controlling the increase in urban surface temperature and creating comfortable urban envi-ronments in summer, the authors have developed a passive evaporative cooling wall (PECW) constructed of porous ceramics. These ceramics enable their vertical surfaces to be wet up to a level higher than 100 cm when their lower end is placed in water. Our previous study has demonstrated the cooling performance and applicability of a prototype PECW constructed of pipe-shaped ceramics (ceramic pipes). The present paper presents a PECW unit system which can be easily installed for practical applications. Experiments were conducted using experimental PECW units. Experimental results show that the ceramic pipe developed in this study possessed a higher water-holding and soaking-up ability than the previous one. Wet surfaces of the new ceramic pipe reached a height of over 130 cm at an outdoor location exposed to solar radiation on sunny summer days. Furthermore, the air passing through the PECW unit was cooled, and its temperature can be reduced by around 2℃ during summer daytime. These results indicate that the proposed PECW can be broadly applied to various urban locations.
机译：为了控制夏季地表温度的升高并在夏天创造舒适的城市环境，作者开发了一种由多孔陶瓷构成的被动蒸发冷却墙（PECW）。当将它们的下端放在水中时，这些陶瓷可以将其垂直表面润湿到100 cm以上的高度。我们以前的研究证明了由管状陶瓷（陶瓷管）制成的PECW原型的冷却性能和适用性。本文提出了一种PECW单元系统，可以很容易地安装以用于实际应用。使用实验性PECW装置进行实验。实验结果表明，本研究开发的陶瓷管比以前的陶瓷管具有更高的保水和吸水能力。在阳光灿烂的夏天，新陶瓷管的湿表面在室外暴露于太阳辐射的地方达到了130厘米以上的高度。此外，流经PECW单元的空气被冷却，在夏季，其温度可降低2℃左右。这些结果表明，拟议的PECW可以广泛应用于各种城市地区。

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  • 来源
    《Building and Environment》 |2011年第1期|p.98-108|共11页
  • 作者

    Jiang He; Akira Hoyano;

  • 作者单位

    School of Civil Engineering, Cuangxi University.1OO Daxue Road, Nanning, Cuangxi, 530004, PR China,Department of Environmental Science and Technology, Interdisciplinary Graduate School, Tokyo Institute of Technology, 4259-G5-2 Nagatsuta-cho, Midori-ku,Yokohama, 226-8502, Japan;

    rnDepartment of Environmental Science and Technology, Interdisciplinary Graduate School, Tokyo Institute of Technology, 4259-C5-2 Nagatsuta-cho, Midori-ku,Yokohama, 226-8502, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    porous ceramics; capillary attraction; water soaking-up; evaporative cooling; passive cooling wall; urban environment;

    机译：多孔陶瓷毛细血管吸引水吸收蒸发冷却;被动冷却墙;城市环境;

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