Application of automated blind for daylighting in tropical region

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Publication Details

Author list: Chaiwiwatworakul P., Chirarattananon S., Rakkwamsuk P.

Publisher: Elsevier

Publication year: 2009

Journal: Energy Conversion and Management (0196-8904)

Volume number: 50

Issue number: 12

Start page: 2927

End page: 2943

Number of pages: 17

ISSN: 0196-8904

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349571824&doi=10.1016%2fj.enconman.2009.07.008&partnerID=40&md5=85620e669a4f382e2b015a4b31ee81da

Languages: English-Great Britain (EN-GB)

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Abstract

This paper reports an experimental and simulation study on application of automated Venetian blind for daylighting in tropical climate. A horizontal blind system operating automatically under programmed control was constructed and integrated onto the glazed windows to form a window system with an automated blind in a room of a laboratory building. A dimming controller was also integrated to the lighting system of the room. Different operation schemes of the window system were devised and tested in the attempt to maximize energy savings while maintaining the quality of the visual environment in the room. Intensive measurement of illuminance of the interior space was undertaken during the experiments. A methodology for calculation of interior daylight illuminance and associated glare corresponding to the configurations of the experiments was adopted. The method was coded into a computer program. Results of calculation from the program agree well with those from experiments for all the schemes of operation conducted. The program was used to simulate the situation when each scheme of operation was implemented for a whole year. It was found that such window system with automated blind enabled energy savings of 80%, but a more sophisticated scheme also helped maintain the interior visual quality at high level. ฉ 2009 Elsevier Ltd. All rights reserved.

Keywords

Direct component and internally reflected component of interior illuminance, Glare, Luminance