Low emittance coatings and the thermal performance of vacuum glazing

Yueping Fang, Philip C. Eames, Brian Norton, Trevor Hyde, Junfu Zhao, Jinlei Wang, Ye Huang

Research output: Contribution to journalArticle

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Abstract

The thermal performances of vacuum glazings employing coatings with emittance between 0.02 and 0.16 were simulated using a three-dimensional finite volume model. Physical samples of vacuum glazings with hard and soft coatings with emittance of 0.04, 0.12 and 0.16 were fabricated and their thermal performance characterised experimentally using a guarded hot box calorimeter. Good agreement was found between experimental and theoretical thermal performances for both a vacuum glazing with a soft coating (emittance 0.04) and those with hard coatings (emittance 0.12 and 0.16). Simulations showed that for a low value of emittance (e.g. 0.02), the use of two low-emittance coatings gives limited improvement in thermal performance of the glazing system. The use of a single high performance low-emittance coating in a vacuum glazing has been shown to provide excellent performance. (c) 2006 Elsevier Ltd. All rights reserved.
LanguageEnglish
Pages8-12
JournalSolar Energy
Volume81
Issue number1
DOIs
Publication statusPublished - 2007

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Fang, Yueping ; Eames, Philip C. ; Norton, Brian ; Hyde, Trevor ; Zhao, Junfu ; Wang, Jinlei ; Huang, Ye. / Low emittance coatings and the thermal performance of vacuum glazing. 2007 ; Vol. 81, No. 1. pp. 8-12.
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Low emittance coatings and the thermal performance of vacuum glazing. / Fang, Yueping; Eames, Philip C.; Norton, Brian; Hyde, Trevor; Zhao, Junfu; Wang, Jinlei; Huang, Ye.

Vol. 81, No. 1, 2007, p. 8-12.

Research output: Contribution to journalArticle

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AU - Fang, Yueping

AU - Eames, Philip C.

AU - Norton, Brian

AU - Hyde, Trevor

AU - Zhao, Junfu

AU - Wang, Jinlei

AU - Huang, Ye

PY - 2007

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AB - The thermal performances of vacuum glazings employing coatings with emittance between 0.02 and 0.16 were simulated using a three-dimensional finite volume model. Physical samples of vacuum glazings with hard and soft coatings with emittance of 0.04, 0.12 and 0.16 were fabricated and their thermal performance characterised experimentally using a guarded hot box calorimeter. Good agreement was found between experimental and theoretical thermal performances for both a vacuum glazing with a soft coating (emittance 0.04) and those with hard coatings (emittance 0.12 and 0.16). Simulations showed that for a low value of emittance (e.g. 0.02), the use of two low-emittance coatings gives limited improvement in thermal performance of the glazing system. The use of a single high performance low-emittance coating in a vacuum glazing has been shown to provide excellent performance. (c) 2006 Elsevier Ltd. All rights reserved.

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