The Daylight coefficient method and complex fenestration

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Conference10th IBPSA Building Simulation Conference: 03 September 2007, Beijin, China
Pages18; # of pages: 8
Subjectdaylighting; daylight coefficient; complex fenestration; blinds; daylight 1-2-3; SkyVision; Daylighting
AbstractThis paper describes a methodology for calculating the daylight coefficient for complex fenestration systems whose optical behavior (transmission, reflection and scattering) may change during simulation. The methodology splits the daylight coefficient into two components: one corresponding to the unscattered transmitted light and the second to the scattered transmitted light. Both components are calculated based on the daylight coefficients of a reference fenestration, and the opticaltransmission characteristic and scattering effect of the actual fenestration. The resulting daylight coefficients for a given complex fenestration system need only be calculated only once prior to simulation and the methodology has been incorporated into Daylight 1-2-3, a new integrated energy and daylighting analysis tool for offices and classrooms.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number49455
NPARC number20377693
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Record identifier959487a5-4c7a-42da-960f-3106bffadd5f
Record created2012-07-24
Record modified2016-05-09
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