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1. The study on non-visual effects of design ratings in Chinese daylighting design standards | |||
Li Xiang,Chen Bin | |||
Civil and Architectural Engineering 01 March 2017 | |||
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Abstract:The non-visual effects have significant impacts on long-term health, work efficiency and moods of human. There may be potential health risks if only considering visual effects in daylighting design. The aim of this paper is to reveal the non-visual effects of existed indoor spaces in China. The study was conducted by assessing different daylighting ratings in 2001 & 2013 daylighting design standards of China. A simple assessment method was established based on the assumption of constant ratio of vertical to horizontal illuminance, and the suppression percentages of melatonin varied with the vertical illuminance. The results demonstrated that the percentages of non-visual effects for daylighting ratings from I to V in 2013 standard were 100%, 100%, 71%, 38% and 5% respectively. In the case study of a side-lit office, considering energy-efficiency, the depth of daylighting zone that approached 100% of the percentage of non-visual effects was 2.1 for rating III while the maximum percentages for ratings IV and V could only reach 85% and 51% respectively. | |||
TO cite this article:Li Xiang,Chen Bin. The study on non-visual effects of design ratings in Chinese daylighting design standards[J]. |
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