Influence of urban rooftop photovoltaic deployment on thermal environment during a heatwave event in complex terrain

IF 6 2区 工程技术 Q2 ENERGY & FUELS
Xiaoqing Gao , Liwei Yang , Zhenchao Li , Dongyu Jia , Shuyuan Ren , Yanhong Ma
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引用次数: 0

Abstract

This study investigates the influence of rooftop photovoltaic panels (RPVPs) on the thermal environment during a heatwave event in Lanzhou, a complex terrain city in China. Using the Weather Research and Forecasting (WRF) model coupled with the Building Effect Parameterization and Building Energy Model (BEP + BEM), we simulate the impacts of RPVPs with varying coverage rates (25 %, 50 %, 75 %, and 100 %) on near-surface temperature, urban heat island (UHI) effect, urban dry island (UDI) effect, and human thermal comfort. The results demonstrate that RPVPs reduce urban temperatures during both daytime and nighttime, exhibiting a more pronounced cooling effect in the eastern part of the city throughout the daytime and in the central area during nighttime. As the coverage rate of RPVPs increases, the UHI intensity (UHII) is significantly mitigated, particularly in the afternoon, with a maximum reduction of 0.71 K. Furthermore, RPVPs also alleviate the UDI effect, especially between 14:00 and 18:00. Finally, RPVPs improve human thermal comfort by lowering the heat index (HI) during peak heat periods, with the more significant benefits in the eastern and southern urban areas. This study highlights the potential of RPVPs as an effective urban climate mitigation strategy in complex terrain cities, providing scientific insights for sustainable urban development in arid and semi-arid regions.
复杂地形下高温天气下城市屋顶光伏部署对热环境的影响
本文研究了复杂地形城市兰州某次热浪事件中屋顶光伏板(rpv)对热环境的影响。利用天气研究与预报(WRF)模型与建筑效应参数化和建筑能量模型(BEP + BEM),我们模拟了不同覆盖率(25%、50%、75%和100%)的rpv对近地表温度、城市热岛(UHI)效应、城市干岛(UDI)效应和人体热舒适的影响。结果表明,rpv在白天和夜间都降低了城市温度,白天在城市东部和夜间在中心地区表现出更明显的降温效果。随着rpv覆盖率的增加,城市热岛强度(UHII)显著减轻,特别是在下午,最大减少0.71 K。此外,rpvp也减轻了UDI效应,特别是在14:00和18:00之间。最后,rpv通过降低高温高峰期的热指数(HI)来改善人体热舒适,在东部和南部城市地区效果更为显著。该研究强调了rpv作为复杂地形城市有效的城市气候减缓策略的潜力,为干旱和半干旱地区的城市可持续发展提供了科学见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Solar Energy
Solar Energy 工程技术-能源与燃料
CiteScore
13.90
自引率
9.00%
发文量
0
审稿时长
47 days
期刊介绍: Solar Energy welcomes manuscripts presenting information not previously published in journals on any aspect of solar energy research, development, application, measurement or policy. The term "solar energy" in this context includes the indirect uses such as wind energy and biomass
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