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The Evaluation of Outdoor Thermal Sensation and Outdoor Energy Efficiency of a Commercial Pedestrianized Zone

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  • Xuan Ma

    (Faculty of Environmental Engineering, The University of Kitakyushu, Kitakyushu 8080135, Japan
    School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

  • Hiroatsu Fukuda

    (Faculty of Environmental Engineering, The University of Kitakyushu, Kitakyushu 8080135, Japan)

  • Dian Zhou

    (School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

  • Mengying Wang

    (Graduate school of Human-Environment Studies, Kyushu University, Kyushu 8190002, Japan)

Abstract

The growth of the scale of cities intensifies urban heat island (UHI) by obstructing the wind and building more radiation at pedestrian level, thus leading to an energy consumption. Commercial pedestrianized-zones cannot only become symbols of cities but also an important factor increasing local economic income. This study conducts on-site measurement and numerical simulation to evaluate the cooling energy efficiency of different parameters (building, vegetation, pavement material) in Fo Shan city, which locates in hot-summer and warm-winter climate region of China. Also, calculations are done to evaluate the index physiological equivalent temperature (PET) for understanding thermal sensation at a pedestrian level (1.5 m). To evaluate different impacts of this zone renewal on the environment and choose the most energy-saving method, it is easy for us to utilize the linear regression for understanding the relationship between coverage ratio of trees (TCR) and thermal comfort in canyon space, which shows that ∆PET = 0.1703 × TCR + 0.2444 with a most important R 2 value of 0.9836, for TCR increases from 12.5% to 22%. In open space, also increasing coverage ratio of trees (TCR) can effectively improve humans’ thermal comfort, which shows that ∆PET = 0.2644 × TCR + 0.3955 with a most important R 2 value of 0.8892.

Suggested Citation

  • Xuan Ma & Hiroatsu Fukuda & Dian Zhou & Mengying Wang, 2019. "The Evaluation of Outdoor Thermal Sensation and Outdoor Energy Efficiency of a Commercial Pedestrianized Zone," Energies, MDPI, vol. 12(7), pages 1-19, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:7:p:1324-:d:220515
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    References listed on IDEAS

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    1. Krüger, E. & Pearlmutter, D. & Rasia, F., 2010. "Evaluating the impact of canyon geometry and orientation on cooling loads in a high-mass building in a hot dry environment," Applied Energy, Elsevier, vol. 87(6), pages 2068-2078, June.
    2. Taleb, Dana & Abu-Hijleh, Bassam, 2013. "Urban heat islands: Potential effect of organic and structured urban configurations on temperature variations in Dubai, UAE," Renewable Energy, Elsevier, vol. 50(C), pages 747-762.
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    Cited by:

    1. Lili Zhang & Dong Wei & Yuyao Hou & Junfei Du & Zu’an Liu & Guomin Zhang & Long Shi, 2020. "Outdoor Thermal Comfort of Urban Park—A Case Study," Sustainability, MDPI, vol. 12(5), pages 1-23, March.
    2. Xuan Ma & Mengying Wang & Jingyuan Zhao & Lei Zhang & Wanrong Liu, 2020. "Performance of Different Urban Design Parameters in Improving Outdoor Thermal Comfort and Health in a Pedestrianized Zone," IJERPH, MDPI, vol. 17(7), pages 1-19, March.
    3. Lei Zhang & Xuan Ma & Jingyuan Zhao & Mengying Wang, 2019. "Tourists’ Thermal Experience and Health in a Commercial Pedestrianized Block: A Case Study in a Hot and Humid Region of Southern China," IJERPH, MDPI, vol. 16(24), pages 1-15, December.

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