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A Elicitation Method of Optimum Slat Angle of Fixed Venetian Blind Considering Energy Performance and Discomfort Glare in Buildings  

Park, Jang Woo (한밭대학교 건축공학과)
Yoon, Jong Ho (한밭대학교 건축공학과)
Oh, Myung-Hwan ((주)TES)
Lee, Kwang-Ho (한밭대학교 건축공학과)
Publication Information
KIEAE Journal / v.12, no.6, 2012 , pp. 107-112 More about this Journal
Abstract
The purpose of this study is to determine the optimum slat angle of the venetian blind which was applied at an outer skin of a curtain-wall system. The evaluation of the blind slat angle was performed in terms of the comfortable visual environment and decreased energy consumption. The office building prototype was considered for the analysis and simulation variables include application of blind, blind slat angle and dimming control of lighting. The annual energy consumption and incidence rate of discomfort glare were analyzed using EnergyPlus which is developed by the U. S. Department of Energy for the detailed building energy simulation. As a result, it turns out that when the blind (reflectance: 0.5) was installed, the annual energy consumption was greater than that of the base model. However, when the dimming control was applied, the maximum energy saving of 16.3% could be achieved at a slat angle of $0^{\circ}$. In addition, in case of the base model, the incidence rate of discomfort glare was 84%, while the case of the blind with the slat angle of $0^{\circ}$ showed that the incidence rate of discomfort glare was 42.4%. Consequently, the results showed that the slat angle of $55^{\circ}$ with dimming control was the optimum strategy for the comfortable visual environment and decreased energy consumption.
Keywords
Venetian Blind; Building Energy Performance; Discomfort Glare; Slat Angle; Dimming Control;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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