| AVS 55th International Symposium & Exhibition | |
| Energy Science and Technology Focus Topic | Tuesday Sessions |
| Session EN-TuP |
| Session: | Energy Focus Topic Poster Session |
| Presenter: | P.J. Petit, V-Glass LLC |
| Correspondent: | Click to Email |
This paper provides a brief summary of the past, present and potential near-term future of energy efficient windows, based on vacuum insulating glass, for residential buildings. It presents a brief history of window technology to the present day, summarizes known efforts around the world today to develop improved insulating window technology, and describes a “Window of the Future”1 that might reasonably be assumed to be available in 2015. This “Window of the Future” consists of a Vacuum Insulating Glass (VIG) unit mounted in a low-heat-loss frame. Using a 3 ft by 5 ft window assembly as a representative “average” size for the purpose of this exercise, the overall U-value for a window of this design and size is estimated to be about 0.091 Btu/hr-sq ft-°F, which is equivalent to a wall rated at R11. Barriers which have prevented vacuum windows from being realized over the past two decades will be described, as well as the current strategies intended to overcome them.
1 “Window of the Future”, Swing Research LLC, April, 2008.