Temporal and spatial characteristics of the urban heat island in Beijing and the impact on building design and energy performance
Temporal and spatial characteristics of the urban heat island in Beijing and the impact on building design and energy performance
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DOI：
10.1016/j.energy.2017.04.053
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发表时间：
2017-07-01
期刊：
影响因子：
9
通讯作者：
Ma, Jingjin
中科院分区：
文献类型：
--
作者：
Cui, Ying;Yan, Da;Ma, Jingjin
随着世界上大多数国家城市化进程的加快，城市热岛效应（Urban Heat Island Effect，简称UHI）近年来引起了人们的广泛关注。鉴于北京城市人口和经济的快速发展，城市热岛效应可能是显着的。利用1961 - 2014年北京市10个农村气象站和7个城市气象站的长期观测数据，分析了北京市城市热岛的时空分布特征。北京的城市热岛效应非常显著，冬季夜间城乡温差高达8摄氏度。此外，还研究了超高建筑物对建筑设计和能源性能的影响。与农村相比，城市热岛效应导致冷负荷增加约11%，热负荷减少约16%，而城市热负荷峰值减少约9%，冷负荷峰值增加约7%。本研究为北京城市热岛效应的研究提供了参考，并为在考虑城市小气候的同时改进建筑设计和决策提供了建议。(C)2017爱思唯尔有限公司版权所有
With the increased urbanization in most countries worldwide, the urban heat island (UHI) effect, referring to the phenomenon that an urban area has higher ambient temperature than the surrounding rural area, has gained much attention in recent years. Given that Beijing is developing rapidly both in urban population and economically, the UHI effect can be significant. A long-term measured weather dataset from 1961 to 2014 for ten rural stations and seven urban stations in Beijing, was analyzed in this study, to understand the detailed temporal and spatial characteristics of the UHI in Beijing. The UHI effect in Beijing is significant, with an urban-to-rural temperature difference of up to 8 degrees C during the winter nighttime. Furthermore, the impacts of UHIs on building design and energy performance were also investigated. The UHI in Beijing led to an approximately 11% increase in cooling load and 16% decrease in heating load in the urban area compared with the rural area, whereas the urban heating peak load decreased 9% and the cooling peak load increased 7% because of the UHI effect. This study provides insights into the UHI in Beijing and recommendations to improve building design and decision-making while considering the urban microclimate. (C) 2017 Elsevier Ltd. All rights reserved.