Study on Determination of Best Window-Wall Ratio of Office Building in Cold Area

Abstract:

The cooling and heating load caused by the heat transfer of the window is significantly greater than that caused by the heat transfer of wall because of the large heat transfer coefficient of the window. At the same time, the sun radiate heat through the window into indoor can increase the cooling load and decrease the heating load; the natural lighting enhances, and the lighting energy consumption decreases because of entering sunlight. The paper took a low energy consumption office building in the northern China for example, synthetically analyzed the cooling energy consumption, heating energy consumption and lighting energy consumption of every orientation under the condition of lighting control or no lighting control. The results show that comparing with no lighting control, the energy consumption with lighting control is less. When using lighting control, the best WWR of south, north, east, west are 0.35, 0.3, 0.3, 0.25, respectively; then the building energy saving rate is 8.2%.

• Periodical: Applied Mechanics and Materials (Volumes 260-261)
• Pages: 209-216
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.260-261.209
• Online since: December 2012
• Authors: Zhi Hua Zhou, Shan Hu, Tao Du
• Keywords: Energy Consumption (EC), Lighting Control, Natural Lighting, Window-Wall Ratio

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