Design insights on tubular skylights

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AuthorSearch for:
Journal titleLighting
Pages3841; # of pages: 4
Subjecttubular skylight, light pipe, SkyVision; Skylights
AbstractTubular skylights emerged as alternative products to conventional skylights to deliver daylight without the unwanted solar heat gains, and cover areas not usually covered by windows and skylights. Nowadays, tubular skylights compete with conventional skylights, particularly in commercial and residential buildings. Tubular skylights consist typically of three parts: collector to gather sunlight, pipe to channel sunlight downward, and ceiling diffuser to diffuse light to the indoor space. The collector is usually hemispheric and made up of clear glazing. The collector may also include some devices to enhance the lighting output of the skylight, especially at low sun altitude angles. The pipe is made up of an Aluminium sheet with highly reflective interior lining. Materials with reflectivity of 99% are commercially available. The diffuser is hemispheric or flat with translucent (opal) or clear glazing. Translucent glazing performs well in light diffusion, but is not efficient in light transmission. On the other hand, clear glazing is efficient in light transmission, but usually requires lenses for light diffusion. Due to this product complexity, prediction of the skylight performance has always been a difficult task. Although some tentative design guides have been proposed by researchers and some skylight manufacturers, tubular skylights still lack some design insights that would help building designers or architects to properly select and deploy skylight products to achieve the desired energy savings.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number47334
NPARC number20378371
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Record identifierab50cbc9-38ee-4ad5-bf63-97cc5268acfc
Record created2012-07-24
Record modified2016-05-09
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