TY - JOUR T1 - An Hourly-Based Performance Comparison of an Integrated Micro-Structural Perforated Shading Screen with Standard Shading Systems JF - Energy and Buildings Y1 - 2012/ A1 - Appelfeld, David A1 - Andrew McNeil A1 - Svendsen, Svend KW - building performance modelling KW - complex fenestration system KW - daylight KW - shading KW - solar gains AB - This article evaluates the performance of an integrated micro structural perforated shading screen (MSPSS). Such a system maintains a visual connection with the outdoors while imitating the shading functionality of a venetian blind. Building energy consumption is strongly influenced by the solar gains and heat transfer through the transparent parts of the fenestration systems. MSPSS is angular-dependent shading device that provides an effective strategy in the control of daylight, solar gains and overheating through windows. The study focuses on using direct experimental methods to determine bi-directional transmittance properties of shading systems that are not included as standard shading options in readily available building performance simulation tools. The impact on the indoor environment, particularly temperature and daylight were investigated and compared to three other static complex fenestration systems. The bi-directional description of the systems was used throughout the article. The simulations were validated against outdoor measurements of solar and light transmittance. VL - 50 IS - July 2012 U2 - LBNL-5521E DO - 10.1016/j.enbuild.2012.03.038 ER - TY - RPRT T1 - Advancement of Electrochromic Windows Y1 - 2006/04// A1 - Eleanor S. Lee A1 - Stephen E. Selkowitz A1 - Robert D. Clear A1 - Dennis L. DiBartolomeo A1 - Joseph H. Klems A1 - Luis L. Fernandes A1 - Gregory J. Ward A1 - Vorapat Inkarojrit A1 - Mehry Yazdanian KW - commercial buildings KW - daylight KW - daylighting controls KW - Electrochromic windows KW - energy efficiency KW - human factors KW - peak demand KW - switchable windows KW - visual comfort AB - This guide provides consumer-oriented information about switchable electrochromic (EC) windows. Electrochromic windows change tint with a small applied voltage, providing building owners and occupants with the option to have clear or tinted windows at any time, irrespective of whether it's sunny or cloudy. EC windows can be manually or automatically controlled based on daylight, solar heat gain, glare, view, energy-efficiency, peak electricity demand response, or other criteria. Window controls can be integrated with other building systems, such as lighting and heating/cooling mechanical systems, to optimize interior environmental conditions, occupant comfort, and energy-efficiency. U1 -

Windows and Daylighting Group

U2 - LBNL-59821 ER -