Preprint Article Version 1 This version is not peer-reviewed

Evaluation of Building Energy and Daylight Performance of Electrochromic Glazing for Optimal Control in Three Different Climate Zones

Version 1 : Received: 28 October 2018 / Approved: 29 October 2018 / Online: 29 October 2018 (08:48:15 CET)

A peer-reviewed article of this Preprint also exists.

Oh, M.; Jang, M.; Moon, J.; Roh, S. Evaluation of Building Energy and Daylight Performance of Electrochromic Glazing for Optimal Control in Three Different Climate Zones. Sustainability 2019, 11, 287. Oh, M.; Jang, M.; Moon, J.; Roh, S. Evaluation of Building Energy and Daylight Performance of Electrochromic Glazing for Optimal Control in Three Different Climate Zones. Sustainability 2019, 11, 287.

Journal reference: Sustainability 2019, 11, 287
DOI: 10.3390/su11010287

Abstract

Solar radiation is closely related to the energy buildings consume for cooling, heating, and lighting purposes. Glazing is the only material of the building envelope that transmits solar radiation and needs to be appropriately designed to reduce energy cㅈonsumption. Currently, smart glass technology is being actively investigated and developed for effective solar radiation control. Among the various types of smart glass, electrochromic glazing is one of the most promising technologies, as it can adjust transmittance on its own, has a wider transmittance range in both the clear and darkened states, and consumes less electricity. Considering the importance of solar radiation adjustment in electrochromic glazing technology, this study attempted to develop an optimal control method for electrochromic glazing. Toward this goal, the solar radiation incident on vertical surfaces and outdoor temperature conditions were controlled in three regions with different climatic characteristics, and the annual cooling, heating, and lighting loads, discomfort glare, and interior illumination were analyzed. This approach enabled the optimal conditions with respect to visual comfort to be determined. Subsequently, the EDPI (Energy and daylight performance index) was used to optimize control conditions for each region, thereby producing integrated evaluations from results with different units and properties. The proposed control method will be utilized to develop a control algorithm and a control system to reduce building energy consumption.

Subject Areas

electrochromic glazing; building energy; daylight performance; optimal control; climate zone; EnergyPlus

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