Measurement of heat flow through vacuum insulating glass part 1: measurement area in direct thermal contact with specimen

Author:

Kocer CenkORCID,Aronen Antti,Collins Richard,Asano Osamu,Ogiso Yumi

Abstract

AbstractNon-uniformities in the heat flow through the support pillars in vacuum insulating glass (VIG) can lead to significant errors in the measurement of the thermal insulating properties of these devices. This paper discusses these errors in instruments for which the measurement area is in direct thermal contact with the glass sheets. The spatial non-uniformities of the heat flow in different VIG designs are modelled using the finite element method. For measuring areas with large dimension compared with the separation of the support pillars, the errors are unacceptably large for all practical designs of VIG when using guarded hot plate instruments. These errors are less for heat flow meter instruments due to the construction of the heat flux transducer.

Funder

University of Sydney

Publisher

Springer Science and Business Media LLC

Subject

Building and Construction,Architecture,Civil and Structural Engineering

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