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A new low-temperature hermetic composite edge seal for the fabrication of triple vacuum glazing

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journal contribution
posted on 21.08.2015, 11:09 by Saim Memon, Farukh Farukh, Philip EamesPhilip Eames, Vadim SilberschmidtVadim Silberschmidt
High performance low-cost vacuum glazing is a key development in the move to more energy-efficient buildings. This study reports the results of experimental and theoretical investigations into the development of a new low-temperature (less than 200 C) composite edge seal. A prototype triple vacuum glazing of dimensions 300mmx300 mm was fabricated with a measured vacuum pressure of 4.8 10 2 Pa achieved. A three-dimensional finite-element model for this prototype triple vacuum glazing with the composite edge seal was also developed. Centre-of-pane and total thermal transmittance values for this small prototype of the triple vacuum glazing were predicted to be 0.33 Wm 2 K 1 and 1.05 Wm 2 K 1 , respectively. It was predicted using the developed model that the thermal performance could be improved by reducing the width of the composite edge seal and by the use of soft lowemissivity coatings on the glass surfaces. Detailed three-dimensional isothermal contour plots of the modelled triple vacuum glazing are presented.


Engineering and Physical Sciences Research Council (EPSRC) of the UK (EP/G000387/1) as a contribution to the Work Package 3.4 of the CALEBRE (ConsumerAppealing Low Energy Technologies for Building Retrofitting) project



  • Mechanical, Electrical and Manufacturing Engineering

Published in



MEMON, S. et al., 2015. A new low-temperature hermetic composite edge seal for the fabrication of triple vacuum glazing. Vacuum, 120, Part A, pp. 73–82.


© Elsevier Ltd.


AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date



This paper was accepted for publication in the journal Vacuum and the definitive published version is available at http://dx.doi.org/10.1016/j.vacuum.2015.06.024