Optical model for prismatic glazing (1415-RP)

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DOIResolve DOI: http://doi.org/10.1080/10789669.2012.736812
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Journal titleHVAC and R Journal
Pages6375; # of pages: 13
AbstractPrismatic glazing is found in many building applications, such as complex fenestration systems to control solar heat gains and glare and re-direct sunlight to building interior spaces and daylighting (and lighting) systems to enhance their optical and lighting performance. However, modeling and simulation of such prismatic glazing has been a very difficult task due to its versatile and complex geometrics. This article presents the development and validation of a simplified model to compute the optical characteristics and dominant directions of the transmitted and reflected beam rays of sawtooth-like prismatic glazing. The model was based on tracing the average ray and was extensively validated using third-party data derived from ray tracing computer simulations and measurement using integrating spheres and goniophotometers. The model's predictions for the transmittance and reflectance of single and double prismatic panes compared well overall within the accuracy of the third-party data over all incidence angles.
Publication date
PublisherTaylor and Francis
AffiliationConstruction; National Research Council Canada
Peer reviewedYes
NRC number55254
NPARC number21268295
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Record identifier1ca732a8-28c0-450d-8f6c-9ed5ef1373d5
Record created2013-06-13
Record modified2016-05-09
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