Detailed simulation of heat transfer across planar evacuated glazing

In this paper techniques are described for modelling heat flow through evacuated glazing. Modelling results are compared with infra-red thermography. The centre of glass thermal performance of evacuated glazing is better than the performance of argon-filled, atmospheric pressure double glazings. Mitigation, or elimination of evacuated glazing edge effects will bring total window thermal performance on par, or better than, competing 'superwindow' options; thus increasing the commercial attractiveness of these glazings. The results of the computer-based thermal modelling at the Universities of Sydney and Ulster compare well with each other and with the infrared thermography measurements at Lawrence Berkeley.