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Proceedings Paper

Light-scattering properties of a woven shade-screen material used for daylighting and solar heat-gain control
Author(s): Jacob C. Jonsson; Eleanor S. Lee; Mike Rubin
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Paper Abstract

Shade-screens are widely used in commercial buildings as a way to limit the amount of direct sunlight that can disturb people in the building. The shade screens also reduce the solar heat-gain through glazing the system. Modern energy and daylighting analysis software such as EnergyPlus and Radiance require complete scattering properties of the scattering materials in the system. In this paper a shade screen used in the LBNL daylighting testbed is characterized using a photogoniometer and a normal angle of incidence integrating sphere. The data is used to create a complete bi-directional scattering distribution function (BSDF) that can be used in simulation programs. The resulting BSDF is compared to a model BSDFs, both directly and by calculating the solar heat-gain coefficient for a dual pane system using Window 6.

Paper Details

Date Published: 29 August 2008
PDF: 11 pages
Proc. SPIE 7065, Reflection, Scattering, and Diffraction from Surfaces, 70650R (29 August 2008); doi: 10.1117/12.795575
Show Author Affiliations
Jacob C. Jonsson, Lawrence Berkeley National Lab. (United States)
Eleanor S. Lee, Lawrence Berkeley National Lab. (United States)
Mike Rubin, Lawrence Berkeley National Lab. (United States)

Published in SPIE Proceedings Vol. 7065:
Reflection, Scattering, and Diffraction from Surfaces
Zu-Han Gu; Leonard M. Hanssen, Editor(s)

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