Building Applications, Opportunities and Challenges of Active Shading Systems: A State-of-the-Art Review
Active shading systems in buildings have emerged as a high performing shading solution that selectively and optimally controls daylight and heat gains. Active shading systems are increasingly used in buildings, due to their ability to mainly improve the building environment, reduce energy consumptio...
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Online Access: | https://www.mdpi.com/1996-1073/10/10/1672 |
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doaj-4c0f78bf6ac3444f90d1422bb4cfbcbd2020-11-25T00:47:43ZengMDPI AGEnergies1996-10732017-10-011010167210.3390/en10101672en10101672Building Applications, Opportunities and Challenges of Active Shading Systems: A State-of-the-Art ReviewJoud Al Dakheel0Kheira Tabet Aoul1Architectural Engineering Department, United Arab Emirates University, P.O. Box 15551 Al Ain, UAEArchitectural Engineering Department, United Arab Emirates University, P.O. Box 15551 Al Ain, UAEActive shading systems in buildings have emerged as a high performing shading solution that selectively and optimally controls daylight and heat gains. Active shading systems are increasingly used in buildings, due to their ability to mainly improve the building environment, reduce energy consumption and in some cases generate energy. They may be categorized into three classes: smart glazing, kinetic shading and integrated renewable energy shading. This paper reviews the current status of the different types in terms of design principle and working mechanism of the systems, performance, control strategies and building applications. Challenges, limitations and future opportunities of the systems are then discussed. The review highlights that despite its high initial cost, the electrochromic (EC) glazing is the most applied smart glazing due to the extensive use of glass in buildings under all climatic conditions. In terms of external shadings, the rotating shading type is the predominantly used one in buildings due to its low initial cost. Algae façades and folding shading systems are still emerging types, with high initial and maintenance costs and requiring specialist installers. The algae façade systems and PV integrated shading systems are a promising solution due to their dual benefits of providing shading and generating electricity. Active shading systems were found to save 12 to 50% of the building cooling electricity consumption.https://www.mdpi.com/1996-1073/10/10/1672active shading systemskinetic shading devicessmart glazingrotating shading systemsfolding shading systemsphotovoltaic (PV)solar collectoralgae façade systemcontrols |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Joud Al Dakheel Kheira Tabet Aoul |
spellingShingle |
Joud Al Dakheel Kheira Tabet Aoul Building Applications, Opportunities and Challenges of Active Shading Systems: A State-of-the-Art Review Energies active shading systems kinetic shading devices smart glazing rotating shading systems folding shading systems photovoltaic (PV) solar collector algae façade system controls |
author_facet |
Joud Al Dakheel Kheira Tabet Aoul |
author_sort |
Joud Al Dakheel |
title |
Building Applications, Opportunities and Challenges of Active Shading Systems: A State-of-the-Art Review |
title_short |
Building Applications, Opportunities and Challenges of Active Shading Systems: A State-of-the-Art Review |
title_full |
Building Applications, Opportunities and Challenges of Active Shading Systems: A State-of-the-Art Review |
title_fullStr |
Building Applications, Opportunities and Challenges of Active Shading Systems: A State-of-the-Art Review |
title_full_unstemmed |
Building Applications, Opportunities and Challenges of Active Shading Systems: A State-of-the-Art Review |
title_sort |
building applications, opportunities and challenges of active shading systems: a state-of-the-art review |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2017-10-01 |
description |
Active shading systems in buildings have emerged as a high performing shading solution that selectively and optimally controls daylight and heat gains. Active shading systems are increasingly used in buildings, due to their ability to mainly improve the building environment, reduce energy consumption and in some cases generate energy. They may be categorized into three classes: smart glazing, kinetic shading and integrated renewable energy shading. This paper reviews the current status of the different types in terms of design principle and working mechanism of the systems, performance, control strategies and building applications. Challenges, limitations and future opportunities of the systems are then discussed. The review highlights that despite its high initial cost, the electrochromic (EC) glazing is the most applied smart glazing due to the extensive use of glass in buildings under all climatic conditions. In terms of external shadings, the rotating shading type is the predominantly used one in buildings due to its low initial cost. Algae façades and folding shading systems are still emerging types, with high initial and maintenance costs and requiring specialist installers. The algae façade systems and PV integrated shading systems are a promising solution due to their dual benefits of providing shading and generating electricity. Active shading systems were found to save 12 to 50% of the building cooling electricity consumption. |
topic |
active shading systems kinetic shading devices smart glazing rotating shading systems folding shading systems photovoltaic (PV) solar collector algae façade system controls |
url |
https://www.mdpi.com/1996-1073/10/10/1672 |
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