Models of optical characteristics of barrel-vault skylights: development, validation and application

Abstract

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1191/1365782805li141oaLighting Research & Technology, 37, 3, pp. 235-264, 2005-09-01 Models of optical characteristics of barrel-vault skylights: development, validation and application Laouadi, A. ABSTRACTBy admitting natural light deep into a building and connecting occupants with the outside, skylights can improve the aesthetic look of buildings and increase occupant satisfaction. In addition, by allowing the entry of natural light electric light levels can be reduced thereby leading to energy savings. However, the potential energy benefits and amenities of skylights have not been fully exploited in today's building design due to some theoretical and technical challenges. The lack of design tools is one of the major hurdles building designers face to adopt such products and quantify their energy benefits. The optical characteristics of skylights are the significant factors affecting their energy benefits. Recognizing this gap, the SkyVision tool was developed to assist skylight manufacturers and building designers in developing appropriate skylight designs for given building types and daylighting applications. This paper describes

Tubular daylighting devices. Part I: Development of an optical model (1415-RP)

“…Many big box retailers regularly use TDDs in their corporate design standards (Deru and MacDonald, 2007;Torcellini et al, 2007). The lighting energy-saving potential of TDDs is well recognized (Allen, 1997;Laouadi, 2005;Torcellini et al, 2007;Carter, 2008). TDDs are also encouraged or mandated, particularly in commercial buildings.…”