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Windcatcher Louvers to Improve Ventilation Efficiency

Author

Listed:
  • Young Kwon Yang

    (School of Architecture and Building Science, Chung-Ang University, Seoul 06974, Korea)

  • Min Young Kim

    (School of Architecture and Building Science, Chung-Ang University, Seoul 06974, Korea)

  • Yong Woo Song

    (Graduate School, Chung-Ang University, Seoul 06974, Korea)

  • Sung Ho Choi

    (Graduate School, Chung-Ang University, Seoul 06974, Korea)

  • Jin Chul Park

    (School of Architecture and Building Science, Chung-Ang University, Seoul 06974, Korea)

Abstract

Windcatcher louvers are designed to capture air flowing outside a building in order to increase its natural ventilation. There are no studies that have designed the shape of the louver to increase the natural ventilation efficiency of the building. This study aimed to conduct a computational fluid dynamics simulation and mock-up test of a Clark Y airfoil-type windcatcher louver designed to increase the natural ventilation in a building. The following test results were obtained. The optimal angle of attack of the airfoil was calculated via a numerical analysis, which demonstrated that the wind speed was at its highest when the angle of attack was 8°; further, flow separation occurred at angles exceeding 8°, at which point the wind speed began to decrease. The results of the mock-up test demonstrated that the time required to reduce the concentration of fine particles in the indoor air was 120 s shorter when the windcatcher was installed than when it was not, which indicating that the time to reduce particles represents a 37.5%reduction. These results can be seen as reducing the energy consumption of ventilation in the building because the natural ventilation efficiency is increased.

Suggested Citation

  • Young Kwon Yang & Min Young Kim & Yong Woo Song & Sung Ho Choi & Jin Chul Park, 2020. "Windcatcher Louvers to Improve Ventilation Efficiency," Energies, MDPI, vol. 13(17), pages 1-20, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:17:p:4459-:d:405715
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    References listed on IDEAS

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    1. Bouchahm, Yasmina & Bourbia, Fatiha & Belhamri, Azeddine, 2011. "Performance analysis and improvement of the use of wind tower in hot dry climate," Renewable Energy, Elsevier, vol. 36(3), pages 898-906.
    2. Beungyong Park & Sihwan Lee, 2020. "Investigation of the Energy Saving Efficiency of a Natural Ventilation Strategy in a Multistory School Building," Energies, MDPI, vol. 13(7), pages 1-13, April.
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    Cited by:

    1. Lili Zhang & Lei Tian & Qiong Shen & Fei Liu & Haolin Li & Zhuojun Dong & Jingyue Cheng & Haoru Liu & Jiangjun Wan, 2021. "Study on the Influence and Optimization of the Venturi Effect on the Natural Ventilation of Buildings in the Xichang Area," Energies, MDPI, vol. 14(16), pages 1-17, August.

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