An experimental glazing system with a rotatable frame may provide the flexibility provide a comfortable and energy efficient environment year round in climates that require cooling in summer and heating in winter. A patent pending system incorporates both a transparent and an absorptive glazing, with a small airspace between, and open at both top and bottom to allow airflow. Researchers are YairEtsion and Evyatar Erell of the Center for Desert Architecture and Urban Planning at Ben-Gurion University of the Negev, Israel. Building and Environment . The National Fenestration Rating Council has proposed a comprehensive response to provide fair, accurate and credible ratings for fenestration products.
Manufacturers work with accredited laboratories to insure compliance.
The rating process is outlined and issues in curtain wall construction are discussed. The Construction Specifier . P21 Specifying Glass to Meet Design, Budget, and Performance Needs Designers and specifiers need to understand glass and glazing terminology and underlying solar control properties in order to determine which products are appropriate and fit the needs of a project. This article briefly discusses glass types and performance. The Construction Specifier .