%0 Conference Paper
%A Jacob C Jonsson
%A Eleanor S Lee
%A Michael D Rubin
%B SPIE Optics+Photonics
%C San Diego, CA
%D 2008
%G eng
%L LBNL-828E
%T Light-scattering properties of a woven shade-screen material used for daylighting and solar heat-gain control
%1 <p>Windows and Daylighting Group</p>
%2 LBNL-828E
%8 08/2008
%X <p>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.</p><p>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 (BDSF) that used in simulation programs.</p><p>The resulting BDSF is compared to a model's BDSF, both directly and by calculating the solar heat-gain coefficient for a dual-pane system using Window 6.</p>