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Jain, Alpana. Optimizing the control strategies for switchable glazing for energy and daylight in an office building. In: CONFERENCE ON PASSIVE AND LOW ENERGY ARCHITECTURE, 20., 2003, Santiago do Chile. Anais... Santiago do Chile, 2003.
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Abstract

This paper investigates the ability of a glazing system to respond to changing environmental conditions according to the time of day and year so as to reduce primary energy needs for heating cooling and lighting. This study takes off from Mike Davies principle of a “Polyvalent Glass” where he goes on to describe a multi-layered compound element which provides heat insulation and solar protection, and dynamically regulates the energy flow in a building from outside to inside. The research therefore looks at a multiple layered glass that will regulate energy flow across the building envelope. The polyvalent glass/skin is a combination/selection of layers like – electrochromic and photochromic glass, an operable layer. Further, this glazing is created using DOE2/eQuest and modeled using the switchable function of glazing in the software to analyze its effect on the energy use in the building. The system is being modeled and tested for all orientations, on an annual basis, for Phoenix. The visible transmittance and energy performance of each layer is modeled and resultant energy savings and daylight levels are determined. The study finally concludes that optimum polyvalent glazing results in lower energy use in the building without compromising on adequate daylight in the building as against the performance of a standard glazing type employed in an office building
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