Evacuated Glazing

Nelson Ng & L. So, School of Physics A28, The University of Sydney

Evacuated Glazing is a new kind of thermally insulating window. It is similar to the structure of double glazing unit but with a very narrow evacuated space. The design of evacuated glazing is based on the principle of operation of the thermo vacuum flask. The evacuated space significantly reduces heat loss and gain through the windows of buildings. The glazing consists of two glass sheets sealed together around the edges, separated by a narrow space and an array of supporting pillars. High levels of thermal insulation are achieved by reducing the internal conduction and convection of gas within the space to a very low level. The internal pressure of a vacuum glazing is typically below 0.1 Pa. Experimental techniques and theoretical modelings have been used to study properties of evacuated glazing. Novel methods were developed to maintain the performance of evacuated glazing.

The Authors

Mr. Nelson Ng Research fellow The University of Sydney Nelson Ng is the research fellow in the University of Sydney. He has worked in the investigation of thermal and optical stability of vacuum glazing for many years and plays a major role in the vacuum ... Read more