The Analysis of Outdoor Thermal Comfort in Guangzhou during Summer

Li, Li; Zhou, Xiaoqing; Yang, Lixiu

doi:10.1016/j.proeng.2017.10.070

Cited by 19 publications

(9 citation statements)

References 5 publications

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“…For the psychological responses, similar to other previous results [47,48], we found that solar radiation and air temperature had the strongest positive correlation with the thermal sensation vote. In contrast to previous investigations [10,49], there were no significant correlations between WSV and other sensation votes, and likewise for the HSV.…”

Section: Discussionsupporting

confidence: 90%

Effect of Landscape Microclimates on Thermal Comfort and Physiological Wellbeing

2019

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Global climate change and intensifying heat islands have reduced human thermal comfort and health in urban outdoor environments. However, there has been little research that has focused on how microclimates affect human thermal comfort, both psychologically and physiologically. We investigated the effect of a range of landscape microclimates on human thermal comfort and health using questionnaires and physiological measurements, including skin temperature, skin conductance, and heart rate variability, and compared the results with the effect of prevailing climate conditions in open spaces. We observed that in landscape microclimates, thermal sensation votes significantly decreased from 1.18 ± 0.66 (warm–hot) to 0.23 ± 0.61 (neutral–slightly warm), and thermal comfort increased from 1.18 ± 0.66 (uncomfortable–neutral) to 0.23 ± 0.61 (neutral–comfortable). In the landscape microclimates, skin temperature and skin conductance decreased 0.3 ± 0.8 °C and 0.6 ± 1.0 μs, respectively, while in the control, these two parameters increased by 0.5 ± 0.9 °C and 0.2 ± 0.7 μs, respectively. Further, in landscape microclimates, subject heart rate variability increased significantly. These results suggest landscape microclimates improve human thermal comfort and health, both psychologically and physiologically. These findings can provide an evidence base that will assist urban planners in designing urban environments for the health and wellbeing of residents.

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Section: Discussionsupporting

confidence: 90%

Effect of Landscape Microclimates on Thermal Comfort and Physiological Wellbeing

2019

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“…They found out that the most important factors affecting outdoor thermal comfort are mean radiant temperature and wind speed. In the analysis of outdoor thermal comfort at the Guangzhou Higher-Education Megacentre, Li and Lixiu [41] found that air temperature and mean radiant temperature are the most influential factors on outdoor thermal comfort. In another study, Tsitoura et al [20] obtained similar results with those of Li and Lixiu while investigating thermal comfort in the island of Crete, Greece.…”

Section: Climatic Parameters Affecting Thermal Comfortmentioning

confidence: 99%

Heat-Mitigation Strategies to Improve Pedestrian Thermal Comfort in Urban Environments: A Review

et al. 2020

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Thermal comfort is one of the main factors affecting pedestrian health, and improving thermal comfort enhances walkability. In this paper, the impact of various strategies on thermal-comfort improvement for pedestrians is thoroughly evaluated and compared. Review studies cover both fieldwork and simulation results. These strategies consist of shading (trees, buildings), the orientation and geometry of urban forms, vegetation, solar-reflective materials, and water bodies, which were investigated as the most effective ways to improve outdoor thermal comfort. Results showed that the most important climatic factors affecting outdoor thermal comfort are mean radiant temperature, wind speed, and wind direction in a microclimate. The best heat-mitigation strategy for improving thermal comfort was found to be vegetation and specifically trees because of their shading effect. The effect of height-to-width (H/W) ratio in canyons is another important factor. By increasing H/W ratio, the thermal-comfort level also increases. Deploying highly reflective materials in urban canyons is not recommended, as several studies showed that they could reflect solar radiation onto pedestrians. Results also showed that, in order to achieve a satisfactory level of thermal comfort, physiological and psychological factors should be considered together.

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“…It has been shown that theses releases of heat negatively affect human well-being in summer [5], but little is known about the potential mechanisms that underlie the relationship between higher temperatures and heat stress sensation in outdoor spaces [6]. At the local climate scale, the outdoor adaptation strategy consists of creating urban microclimates that provide a certain degree of climatic comfort to users during hot periods [7].…”

Section: Introductionmentioning

confidence: 99%

Potential Contribution of Green and Blue Technologies to Reduce Heat Stress in Outdoor Spaces, Case of Guelma City-Algeria Yeşil ve Mavi Teknolojilerin Dış Mekânlarda Isı Stresini Azaltmaya Muhtemel Katkısı, Guelma Şehri-Cezayir Örneği

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The Analysis of Outdoor Thermal Comfort in Guangzhou during Summer

Cited by 19 publications

References 5 publications

Effect of Landscape Microclimates on Thermal Comfort and Physiological Wellbeing

Effect of Landscape Microclimates on Thermal Comfort and Physiological Wellbeing

Heat-Mitigation Strategies to Improve Pedestrian Thermal Comfort in Urban Environments: A Review

Potential Contribution of Green and Blue Technologies to Reduce Heat Stress in Outdoor Spaces, Case of Guelma City-Algeria Yeşil ve Mavi Teknolojilerin Dış Mekânlarda Isı Stresini Azaltmaya Muhtemel Katkısı, Guelma Şehri-Cezayir Örneği

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