Abstract :
Flat evacuated glazing consists of two plane glass panes separated by a narrow internal evacuated space. Separation in the space is
maintained by an array of support pillars typically 0.32 mm in diameter and 0.12 mm high arranged on a regular square grid with an
inter-pillar separation of up to 40 mm. A detailed three-dimensional finite volume model has been employed to determine the variation
of thermal performance of an evacuated glazing as a function of glass pane thickness. It was predicted that for evacuated glazing of
dimensions of 0.3 m by 0.3 m and 0.5 m by 0.5 m, reducing glass pane thickness gave improved thermal performance. For evacuated
glazings with dimensions of 1 m by 1 m, the opposite was predicted.
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