Effect of glass thickness on the thermal performance of evacuated glazing

Yueping Fang, Philip Eames, Brian Norton

    Research output: Contribution to journalArticle

    22 Citations (Scopus)

    Abstract

    Flat evacuated glazing consists of two plane glass panes separated by a narrow internal evacuated space. Separation of the space is maintained by an array of support pillars typically 0.32mm in diameter and 0.12mm high arranged on a regular square grid with an inter-pillar separation of up to 40mm. 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 0.3m by 0.3m and 0.5m by 0.5m, reducing glass pane thickness gave improved thermal performance. For evacuated glazings with dimensions of 1m by 1m, the opposite was predicted.
    LanguageEnglish
    Pages395-404
    JournalSolar Energy
    Volume81
    DOIs
    Publication statusPublished - Mar 2007

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    Keywords

    • Evacuated glazing
    • thermal performance
    • glass thickness
    • finite volume model

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    Fang, Yueping ; Eames, Philip ; Norton, Brian. / Effect of glass thickness on the thermal performance of evacuated glazing. 2007 ; Vol. 81. pp. 395-404.
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    abstract = "Flat evacuated glazing consists of two plane glass panes separated by a narrow internal evacuated space. Separation of the space is maintained by an array of support pillars typically 0.32mm in diameter and 0.12mm high arranged on a regular square grid with an inter-pillar separation of up to 40mm. 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 0.3m by 0.3m and 0.5m by 0.5m, reducing glass pane thickness gave improved thermal performance. For evacuated glazings with dimensions of 1m by 1m, the opposite was predicted.",
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    note = "Reference text: Anon, 1992. A PC program WINDOW 4.0 for analysing window thermal performance. Lawrence Berkeley Laboratory Berkeley, CA94720 USA. ASTM, 1991. Standard procedures for determining the steady state thermal transmittance of fenestration systems, ASTM Standard E 1423-91. In 1994 Annual Book of ASTM Standard 04.07. American Society of Testing and Materials, pp.1160-1165. Collins R.E., Robinson S.J., 1991. Evacuated glazing. Solar Energy 47, 27-38. Collins R.E., Simko T.M., 1998. Current status of the science and technology of vacuum glazing. Solar Energy 62, 189-213. Eames P.C., Norton B., 1993. A validated unified model for optics and heat transfer in line-axis concentrating solar energy collectors. Solar Energy 50, 339-355. Fang Y., Eames P.C., Hyde T.J., Norton B., 2005. Complex multimaterial insulating frames for windows with evacuated glazing. Solar Energy 79 245-261. Griffiths P.W., Norton B., Eames P.C., Lo S.N.G., 1996. Detailed Simulation of Heat Transfer Across Evacuated Glazing, Building Research Information 24, 141-147. Griffiths P.W., Leo M.Di, Cartwright P., Eames P.C. , Yianoulis P., Leftheriotis G and Norton B. (1998) Fabrication of Evacuated Glazing at Low Temperature, Solar Energy 63, 243-249. Griffiths P. W., Eames C. P., Hyde J. T., Fang Y., Norton B., 2006. Experimental characterization and detailed performance prediction of a vacuum glazing system fabricated with a low temperature metal edge seal, using a validated computer model, ASME Journal of Solar Energy Engineering, 128, 2, 199-203. Robinson S.J., Collins R.E., 1989. Evacuated window  theory and practice. In ISES Solar World Congress, Internal Solar Energy Society, Kobe, Japan. Simko T.M., 1996. Heat transfer process and stresses in vacuum glazing. Ph.D. thesis, University of Sydney. Wilson C.F., Simko T.M., Collins R.E., 1998. Heat Conduction Through The Support Pillars in Vacuum Glazing, Solar Energy 63, 393-406.",
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    Effect of glass thickness on the thermal performance of evacuated glazing. / Fang, Yueping; Eames, Philip; Norton, Brian.

    Vol. 81, 03.2007, p. 395-404.

    Research output: Contribution to journalArticle

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