Theoretical Study of Flexible Edge Seals for Vacuum Glazing

Research output: Contribution to journalArticle

Abstract

Abstract—The development of vacuum glazing represents asignificant advancement in the area of low heat loss glazing systemswith the potential to substantially reduce building heating and coolingloads. Vacuum glazing consists of two or more glass paneshermetically sealed together around the edge with a vacuum gapbetween the panes. To avoid the glass panes from collapsing andtouching each other under the influence of atmospheric pressure anarray of support pillars is provided between the glass panes. A highlevel of thermal insulation is achieved by evacuating the spacesbetween the glass panes to a very low pressure which greatly reducesconduction and convection within the space; therefore heat transferthrough this kind of glazing is significantly lower when comparedwith conventional insulating glazing. However, vacuum glazing issubject to inherent stresses due to atmospheric pressure andtemperature differentials which can lead to fracture of the glass panesand failure of the edge seal. A flexible edge seal has been proposed tominimise the impact of these issues. In this paper, vacuum glazingsystem with rigid and flexible edge seals is theoretically studied andtheir advantages and disadvantages are discussed.
LanguageEnglish
Pages1128-1132
Number of pages5
JournalInternational Journal of Structural and Construction Engineering
Volume11
Issue number8
Early online date11 Aug 2017
Publication statusE-pub ahead of print - 11 Aug 2017
Event19th International Conference on Sustainable Buildings Design and Construction - Venice, Italy
Duration: 11 Aug 2017 → …

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vacuum
glass
atmospheric pressure
evacuating
heat
thermal insulation
convection
low pressure
heating

Keywords

  • Flexible edge seal
  • stress
  • support pillar
  • vacuum glazing.

Cite this

@article{a1c29ca74be8410a8f2e85037017e3f9,
title = "Theoretical Study of Flexible Edge Seals for Vacuum Glazing",
abstract = "Abstract—The development of vacuum glazing represents asignificant advancement in the area of low heat loss glazing systemswith the potential to substantially reduce building heating and coolingloads. Vacuum glazing consists of two or more glass paneshermetically sealed together around the edge with a vacuum gapbetween the panes. To avoid the glass panes from collapsing andtouching each other under the influence of atmospheric pressure anarray of support pillars is provided between the glass panes. A highlevel of thermal insulation is achieved by evacuating the spacesbetween the glass panes to a very low pressure which greatly reducesconduction and convection within the space; therefore heat transferthrough this kind of glazing is significantly lower when comparedwith conventional insulating glazing. However, vacuum glazing issubject to inherent stresses due to atmospheric pressure andtemperature differentials which can lead to fracture of the glass panesand failure of the edge seal. A flexible edge seal has been proposed tominimise the impact of these issues. In this paper, vacuum glazingsystem with rigid and flexible edge seals is theoretically studied andtheir advantages and disadvantages are discussed.",
keywords = "Flexible edge seal, stress, support pillar, vacuum glazing.",
author = "Farid Arya and Trevor Hyde",
note = "This paper was awarded as the best paper in the Conference Reference text: REFERENCES [1] A. Zoller, “Hohle Glasscheibe,” German Patent Application. 1913; 387655. [2] R. E. Collins, S. J. Robinson, “Evacuated windows,” Solar Energy Vol. 47, No. 1, pp. 27-38, 1991. [3] R. E. Collins, T. M. Simko, “Current status of the science and technology of vacuum glazing,” Solar Energy. 1998; 62:189–213. [4] J. Wang, P.C. Eames, J.F. Zhao, T. Hyde, Y. Fang, “Stresses in vacuum glazing fabricated at low temperature,” Solar Energy Materials & Solar Cells 91 (2007) 290–303. [5] D. K. Benson, C. E. Tracey, J. G. Jorgenson, SPIE symposium on optics and electro optics. San Diego; 1985. [6] T. J. Hyde, P. W. Griffiths, P.C. Eames, B. Norton, “Development of a novel low temperature edge seal for evacuated glazing,” Proceedings of the world renewable energy congress VI (WREC2000). 2000; 271–74. [7] Y. Fang, T. Hyde, F. Arya, N. Hewitt, P.C. Eames, B. Norton, S. Miller, “Indium alloy-sealed vacuum glazing development and context,” Renewable and Sustainable Energy Reviews. 37 (2014) 480–501. [8] E. Bachli, “Heat-Insulating construction and/or lighting element,” International Patent Element Number: PCT/CH 86/00166 (1987). [9] K. Bettger and D.H. Stark, “Flexible edge seal for vacuum insulating glazing units,” US patent 20100178439; 2010. [10] T. P. Kerr, S. B. Lin, P. P. Harmon, W. R. Siskos, J. L. Oravitz, Jr., P. E. Shaffer, “Vacuum insulating unit,” US5124185 A; 1992. [11] D. J. Cooper, “Vacuum IG window unit with metal member in hermetic edge seal,” US7919157 B2; 2011 [12] T. M. Simko, A. C. Fischer-Cripps, R. E. Collins, “Temperature- induced stresses in vacuum glazing: Modelling and experimental validation,” Solar Energy. 1998; Vol. 63, No. 1, pp. 1–21. [13] A. C. Fischer-Cripps, R. E. Collins, G. M. Turner, E. Bezzel, “Stresses and Fracture Probability in Evacuated Glazing,” Building and Enoironmenf. 1995; Vol. 30, No. I, pp. 41-5.",
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language = "English",
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Theoretical Study of Flexible Edge Seals for Vacuum Glazing. / Arya, Farid; Hyde, Trevor.

Vol. 11, No. 8, 11.08.2017, p. 1128-1132.

Research output: Contribution to journalArticle

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AU - Arya, Farid

AU - Hyde, Trevor

N1 - This paper was awarded as the best paper in the Conference Reference text: REFERENCES [1] A. Zoller, “Hohle Glasscheibe,” German Patent Application. 1913; 387655. [2] R. E. Collins, S. J. Robinson, “Evacuated windows,” Solar Energy Vol. 47, No. 1, pp. 27-38, 1991. [3] R. E. Collins, T. M. Simko, “Current status of the science and technology of vacuum glazing,” Solar Energy. 1998; 62:189–213. [4] J. Wang, P.C. Eames, J.F. Zhao, T. Hyde, Y. Fang, “Stresses in vacuum glazing fabricated at low temperature,” Solar Energy Materials & Solar Cells 91 (2007) 290–303. [5] D. K. Benson, C. E. Tracey, J. G. Jorgenson, SPIE symposium on optics and electro optics. San Diego; 1985. [6] T. J. Hyde, P. W. Griffiths, P.C. Eames, B. Norton, “Development of a novel low temperature edge seal for evacuated glazing,” Proceedings of the world renewable energy congress VI (WREC2000). 2000; 271–74. [7] Y. Fang, T. Hyde, F. Arya, N. Hewitt, P.C. Eames, B. Norton, S. Miller, “Indium alloy-sealed vacuum glazing development and context,” Renewable and Sustainable Energy Reviews. 37 (2014) 480–501. [8] E. Bachli, “Heat-Insulating construction and/or lighting element,” International Patent Element Number: PCT/CH 86/00166 (1987). [9] K. Bettger and D.H. Stark, “Flexible edge seal for vacuum insulating glazing units,” US patent 20100178439; 2010. [10] T. P. Kerr, S. B. Lin, P. P. Harmon, W. R. Siskos, J. L. Oravitz, Jr., P. E. Shaffer, “Vacuum insulating unit,” US5124185 A; 1992. [11] D. J. Cooper, “Vacuum IG window unit with metal member in hermetic edge seal,” US7919157 B2; 2011 [12] T. M. Simko, A. C. Fischer-Cripps, R. E. Collins, “Temperature- induced stresses in vacuum glazing: Modelling and experimental validation,” Solar Energy. 1998; Vol. 63, No. 1, pp. 1–21. [13] A. C. Fischer-Cripps, R. E. Collins, G. M. Turner, E. Bezzel, “Stresses and Fracture Probability in Evacuated Glazing,” Building and Enoironmenf. 1995; Vol. 30, No. I, pp. 41-5.

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N2 - Abstract—The development of vacuum glazing represents asignificant advancement in the area of low heat loss glazing systemswith the potential to substantially reduce building heating and coolingloads. Vacuum glazing consists of two or more glass paneshermetically sealed together around the edge with a vacuum gapbetween the panes. To avoid the glass panes from collapsing andtouching each other under the influence of atmospheric pressure anarray of support pillars is provided between the glass panes. A highlevel of thermal insulation is achieved by evacuating the spacesbetween the glass panes to a very low pressure which greatly reducesconduction and convection within the space; therefore heat transferthrough this kind of glazing is significantly lower when comparedwith conventional insulating glazing. However, vacuum glazing issubject to inherent stresses due to atmospheric pressure andtemperature differentials which can lead to fracture of the glass panesand failure of the edge seal. A flexible edge seal has been proposed tominimise the impact of these issues. In this paper, vacuum glazingsystem with rigid and flexible edge seals is theoretically studied andtheir advantages and disadvantages are discussed.

AB - Abstract—The development of vacuum glazing represents asignificant advancement in the area of low heat loss glazing systemswith the potential to substantially reduce building heating and coolingloads. Vacuum glazing consists of two or more glass paneshermetically sealed together around the edge with a vacuum gapbetween the panes. To avoid the glass panes from collapsing andtouching each other under the influence of atmospheric pressure anarray of support pillars is provided between the glass panes. A highlevel of thermal insulation is achieved by evacuating the spacesbetween the glass panes to a very low pressure which greatly reducesconduction and convection within the space; therefore heat transferthrough this kind of glazing is significantly lower when comparedwith conventional insulating glazing. However, vacuum glazing issubject to inherent stresses due to atmospheric pressure andtemperature differentials which can lead to fracture of the glass panesand failure of the edge seal. A flexible edge seal has been proposed tominimise the impact of these issues. In this paper, vacuum glazingsystem with rigid and flexible edge seals is theoretically studied andtheir advantages and disadvantages are discussed.

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KW - support pillar

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