Effect of glass thickness on the thermal performance of evacuated glazing

Yueping Fang, Philip Eames, Brian Norton

Research output: Contribution to journalArticle

26 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)395-404
Number of pages10
JournalSolar Energy
Volume81
Issue number3
DOIs
Publication statusPublished - Mar 2007

Keywords

  • Evacuated glazing
  • Thermal performance
  • Glass thickness
  • Finite volume model

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