Impacts of shading effect from nearby buildings on heating and cooling energy consumption in hot summer and cold winter zone of China
Impacts of shading effect from nearby buildings on heating and cooling energy consumption in hot summer and cold winter zone of China
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DOI：
10.1016/j.enbuild.2016.11.064
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发表时间：
2017-02
影响因子：
6.7
通讯作者：
T. Ichinose;L. Lei;Ye Lin
中科院分区：
文献类型：
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作者：
T. Ichinose;L. Lei;Ye Lin
作者研究了中国夏热冬冷地区的五个主要城市（上海、武汉、长沙、成都和重庆），使用eQUEST对附近居民遮阳对空间制冷和供暖用电量的影响进行了数值模拟。空间制冷需求减少了10%到20%，而空间供暖需求增加了20%。目标区域附近建筑的遮阳效应导致夏季空间制冷需求的减少，否则这种影响大于冬季空间供暖需求的增加。在上海和武汉，这两种影响相互抵消，但在长沙、成都和重庆，冬季空间供暖需求增加的影响几乎看不出来。内陆三市（长沙、成都、重庆）可以忽略冬季遮阳的负面影响，提出在夏季最大化附近建筑遮阳效果的设计。相比之下，对于上海和武汉来说，在建筑之间设计更大的距离，同时在建筑附近种植落叶树等措施，以产生树叶的遮阳效果，可能会更有效。除上海外，根据建议的最小建筑间距设计的住宅建筑群的减排幅度最大。在武汉和长沙，目前推荐的建筑物之间的最小距离有利于减少空调的用电量。将目标区域向北和向南扩展（哈尔滨、北京、上海、福州和海口），考察了天气值差异对计算结果的影响。
The authors studied five major municipalities (Shanghai, Wuhan, Changsha, Chengdu and Chongqing) in China's hot summer and cold winter zone, using eQUEST to perform numerical simulations of the effects of shading by nearby residences on electricity consumption for space cooling and heating. Space cooling demand reductions were as much as 10% to 20%, while space heating demand increases up to 20%. The shading effect from nearby buildings in the targeted region causes reductions in space cooling demand in summer, otherwise this effect outweigh increases in space heating demand in winter. In Shanghai and Wuhan, these two effects counteracted each other, but in Changsha, Chengdu and Chongqing, the effect of increased space heating demand in winter was barely discernible. The negative effect of shading in winter may be disregarded in the three inland municipalities (Changsha, Chengdu and Chongqing), designs may be proposed such that the shading effect from nearby buildings is maximized in summer. In contrast, for Shanghai and Wuhan it is probably more effective to design greater distances between buildings while applying a measure such as planting deciduous trees near the buildings to produce a shading effect from the leaves. Except in Shanghai, the highest reductions can be expected in residential building clusters designed with the suggested minimum distances between buildings. In Wuhan and Changsha, the current recommended minimum distances between buildings are favorable with regard to reducing electricity consumption for air conditioning. The authors extended the target region north and south (Ha’erbin, Beijing, Shanghai, Fuzhou and Haikou), examined the effects of differences in weather values on the calculation results.