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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  • LEI Lei
    Social and Environmental Systems Division, National Institute for Environmental Studies Graduate School of Environmental Studies, Nagoya University
  • ICHINOSE Toshiaki
    Social and Environmental Systems Division, National Institute for Environmental Studies Graduate School of Environmental Studies, Nagoya University
  • IMURA Hidefumi
    Graduate School of Environmental Studies, Nagoya University

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Other Title
  • 近接住棟による日影が住宅の空調需要に与える影響の地域間比較
  • キンセツジュウトウ ニ ヨル ヒカゲ ガ ジュウタク ノ クウチョウ ジュヨウ ニ アタエル エイキョウ ノ チイキ カン ヒカク

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Abstract

Shading effect of neighboring buildings in the residential building cluster in the hot summer and cold winter zone of China is estimated by building energy simulation tool eQUEST. Generic building according to the prevailing residential buildings in the area is established. Cooling, heating, and combined electricity energy consumption is estimated, with and without neighboring buildings. It was found that shaded by the neighboring building with the recommended distance from the generic building, the cooling electricity consumption in the five case study cities reduced about 10 to 20 percent. The heating electricity consumption, on the contrary, increased about 0 to 20 percent. The total energy reduced by shading effect is more in the cities of Changsha, Chengdu and Chongqing. The relationship of distance between buildings in the South-North direction has been studied also by energy simulation. In all the cities in the area, with the increase of widthN-S, the cooling energy decreases, the heating energy increases. The optimum widthN-S for energy conservation has been found in Shanghai, Wuhan and Changsha. In Shanghai, it will benefit to building energy saving, if the recommended widthN-S increases to 1.5H. In Chongqing and Chengdu, the smaller the widthN-S is, the more energy is conserved.

Journal

  • ENVIRONMENTAL SCIENCE

    ENVIRONMENTAL SCIENCE 25 (2), 106-116, 2012

    SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN

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