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

Myunghwan Oh, Minsu Jang, Jaesik Moon and Seungjun Roh
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Myunghwan Oh: Building Envelope Technology Center, Energy & Environment Business Division, Korea Conformity Laboratories (KCL), 595-10, Pyengsin 1-ro, Daesan-eup, Seosan-si 31900, Chungnam, Korea
Minsu Jang: Building Envelope Technology Center, Energy & Environment Business Division, Korea Conformity Laboratories (KCL), 595-10, Pyengsin 1-ro, Daesan-eup, Seosan-si 31900, Chungnam, Korea
Jaesik Moon: Building Envelope Technology Center, Energy & Environment Business Division, Korea Conformity Laboratories (KCL), 595-10, Pyengsin 1-ro, Daesan-eup, Seosan-si 31900, Chungnam, Korea
Seungjun Roh: Sustainable Building Research Center, Hanyang University, 55 Hanyangdaehak-ro, Sangrok-gu, Ansan-si 15588, Gyeonggi-do, Korea

Sustainability, 2019, vol. 11, issue 1, 1-23

Abstract: The objective of this paper is to analyze the control conditions of the transmittance rate, and determine the conditions that are most optimal with respect to building energy and daylight performance in three climate conditions: Riyadh, Saudi Arabia (hot climate); Inchon, South Korea (hot and cold climate); and Moscow, Russia (cold climate). The analysis was based on the electrochromic glass developed by a research team. Electrochromic glass is a next generation solar control glass that can control the transmittance of the glass itself. Therefore, proper control methods are essential for rational use of this electrochromic glass. To properly control electrochromic glass, daylight performance must be considered, along with building energy (heating, cooling, and lighting). If only building energy is considered, transmittance needs to be lowered during the summer season and increased during the winter season. Controlling electrochromic glass transmittance with such a method would not improve the satisfaction of users and occupants of a building due to the resulting glare. In addition to energy reduction, the basic function of solar control glass is to prevent glare. Therefore, in this study, we develop the Energy and Daylight Performance Index (EDPI) using, to evaluate the combined building energy and daylight performance and deduce the optimal control method for electrochromic glass. In addition, optimal control conditions for the three different climatic regions were obtained. Limitations of this study were that the scope was restricted to the eastern climate region, and that the building analysis model was limited to one climate region. It is expected that the optimal control method could be used as an initial database in the development of a electrochromic glass control system.

Keywords: electrochromic glazing; building energy; daylight performance; optimal control; climate zone; EnergyPlus (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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