Light-scattering properties of a woven shade-screen material used for daylighting and solar heat-gain control

Jacob C. Jonsson; Eleanor S. Lee; Mike Rubin

doi:10.1117/12.795575

29 August 2008 Light-scattering properties of a woven shade-screen material used for daylighting and solar heat-gain control

Jacob C. Jonsson, Eleanor S. Lee, Mike Rubin

Author Affiliations +

Proceedings Volume 7065, Reflection, Scattering, and Diffraction from Surfaces; 70650R (2008) https://doi.org/10.1117/12.795575
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

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.

Citation Download Citation

Jacob C. Jonsson, Eleanor S. Lee, and Mike Rubin "Light-scattering properties of a woven shade-screen material used for daylighting and solar heat-gain control", Proc. SPIE 7065, Reflection, Scattering, and Diffraction from Surfaces, 70650R (29 August 2008); https://doi.org/10.1117/12.795575

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