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Investigation on the Thermal Condition of a Traditional Cold-Lane in Summer in Subtropical Humid Climate Region of China

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Listed:
  • Hui Chen

    (College of Architecture, Hunan University, Changsha 410082, China
    National Center for International Research Collaboration in Building Safety and Environment, College of Civil Engineering, Hunan University, Changsha 410082, China)

  • Yin Wei

    (College of Architecture, Hunan University, Changsha 410082, China
    School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Yaolin Lin

    (School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China)

  • Wei Yang

    (Faculty of Architecture, Building and Planning, The University of Melbourne, Melbourne 3010, Australia)

  • Xiaoming Chen

    (College of Architecture, Hunan University, Changsha 410082, China)

  • Maria Kolokotroni

    (Mechanical and Aerospace Engineering Department, Brunel University London, Brunel UB8 3PH, UK)

  • Xiaohong Liu

    (College of Architecture, Hunan University, Changsha 410082, China)

  • Guoqiang Zhang

    (College of Architecture, Hunan University, Changsha 410082, China
    National Center for International Research Collaboration in Building Safety and Environment, College of Civil Engineering, Hunan University, Changsha 410082, China)

Abstract

A Chinese traditional narrow street, named Cold-Lane, can create a microclimatic zone that provides pedestrian thermal comfort under hot and humid climate conditions. This phenomenon was observed through experimental measurement during the summer of 2016. The heat transfer rate over the pedestrian body surface was calculated to reveal why pedestrians experience a cool sensation, and computational flow dynamics (CFD) simulation was carried out to study the influence of the street aspect ratio on the shading effect. It was found that the perception of thermal comfort can be attributed mainly to the radiation between the relatively cool surrounding walls and the human body, and the wind velocity has little effect on sensible heat dissipation. The cool horizontal and vertical surfaces in the street canyon are mainly due to the shading effect as a result of the small aspect ratio, which is a typical characteristic of the traditional Chinese street. The shading effect of the high walls on both sides creates the cooling effect of this narrow street.

Suggested Citation

  • Hui Chen & Yin Wei & Yaolin Lin & Wei Yang & Xiaoming Chen & Maria Kolokotroni & Xiaohong Liu & Guoqiang Zhang, 2020. "Investigation on the Thermal Condition of a Traditional Cold-Lane in Summer in Subtropical Humid Climate Region of China," Energies, MDPI, vol. 13(24), pages 1-21, December.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:24:p:6602-:d:462028
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    References listed on IDEAS

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    1. Jamei, Elmira & Rajagopalan, Priyadarsini & Seyedmahmoudian, Mohammadmehdi & Jamei, Yashar, 2016. "Review on the impact of urban geometry and pedestrian level greening on outdoor thermal comfort," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1002-1017.
    2. Hong, Bo & Lin, Borong, 2015. "Numerical studies of the outdoor wind environment and thermal comfort at pedestrian level in housing blocks with different building layout patterns and trees arrangement," Renewable Energy, Elsevier, vol. 73(C), pages 18-27.
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