Tubular guidance systems for daylight: Achieved and predicted installation performances

Mohammed Al-Marwaee and David Carter

Applied Energy, 2006, vol. 83, issue 7, 774-788

Abstract: Tubular daylight-guidance systems are linear devices that channel daylight into the core of a building. The development, over the last decade, of materials with high specular reflectance has led to a large number of passive zenithal systems; the most commercially successful type of daylight guidance being installed in many parts of the world. The rapid change in technology has not been matched by the development of either reliable and standardised design methods or design criteria against which the systems may be evaluated. This paper presents the results of several surveys of daylight guidance systems in 13 working buildings. These give an indication of the conditions created, which are used as the bases of suggested design criteria. A critical review of existing performance prediction methods notes that these lag far behind comparable methods for electric lighting and conventional glazing. A number of improved methods of prediction, currently under consideration by the CIE Technical Committee TC3-38, are presented and each is tested against measured data from the installation surveys.

Keywords: Daylight; Daylight; guidance; Design; Prediction; Measurement; Light; pipes (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (10)

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