01399nas a2200145 4500008004100000050001400041245011400055210006900169260002700238520084600265100002301111700002101134700002301155856007501178 2008 eng d aLBNL-828E00aLight-scattering properties of a woven shade-screen material used for daylighting and solar heat-gain control0 aLightscattering properties of a woven shadescreen material used  aSan Diego, CAc08/20083 a

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 (BDSF) that used in simulation programs.

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.

1 aJonsson, Jacob, C.1 aLee, Eleanor, S.1 aRubin, Michael, D. uhttps://facades.lbl.gov/publications/light-scattering-properties-woven