Optimal control of switchable ethylene-tetrafluoroethylene (ETFE) cushions for building facades.

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Date: Apr. 2021
From: Solar Energy(Vol. 218)
Publisher: Elsevier Science Publishers
Document Type: Report; Brief article
Length: 202 words

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Abstract :

Keywords Building energy performance; ETFE cushion, office building; Optimal control; Sequences of operation Highlights * Optimized control sequences of operation for dynamic ETFE cushion façades. * Compared to standard control strategies of Rule-based, Always-Dark, and Always-Bright. * Showed impacts of optimal control of ETFE facades in the shoulder season. * Demonstrated up to 25.5% in total energy savings. Abstract Switchable ethylene-tetrafluoroethylene (ETFE) cushions with kinetic shading mechanisms are increasingly being used in building enclosures to dynamically control the transmission of solar and visible light. While buildings with switchable ETFE façades typically utilize simple Rule-Based logic to control their operation, this study uses a novel co-simulation approach to optimize the operation of switchable ETFE façades on two hypothetical office buildings in Chicago, IL. Four seasonally representative simulation days are used to demonstrate the approach. The daily source energy savings potential of the Optimal Control schedule is up to 8.2%, 11.1%, and 25.5% compared to Rule-Based, Always-Dark, and Always-Bright control strategies, respectively. Author Affiliation: Department of Civil, Architectural, and Environmental Engineering, Illinois Institute of Technology, Chicago, IL, USA * Corresponding author. Article History: Received 18 September 2020; Revised 15 January 2021; Accepted 26 January 2021 Byline: Afshin Faramarzi, Brent Stephens, Mohammad Heidarinejad [muh182@iit.edu] (*)

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Gale Document Number: GALE|A657002923