Determination of anisotropic thermal conductivity of VIP laminate using transient plane source method
Paper in proceeding, 2019

The use of super insulation materials, such as vacuum insulation panels (VIP), is expected toincrease in buildings in the future. One key aspect for successful implementation is the qualitycontrol. At the factory, the thermal performance can easily be controlled by measuring theinternal pressure of the VIP. Preferably, the performance should be controlled again at theconstruction site before installation. The thermal conductivity of a VIP is possible to measureby using the transient plane source method (TPS). This method uses a sensor which measurethe temperature increase during a heat pulse. For the analysis of the measurement, informationon the thermal conductivity of the metalized multi-layer polymer laminate, used around the VIP,is needed. This paper presents the results obtained from different measurement setups of thelaminate. The aim of the study is to identify a practical approach to analyse the results, and togive recommendations on the best measurement setup. Two measurement submodules wereused; ‘anisotropic’ and ‘thin film’. The thermal conductivity of the laminate was measured inplaneand perpendicular to in-plane. The volumetric heat capacity was measured by differentialscanning calorimeter (DSC). The measurement results were compared to calculations. Theresults from the ‘anisotropic’ module was in best agreement with the calculated results. It wasalso illustrated that the TPS may be used for relative measurements to find damaged VIP.


thermal conductivity





Bijan Adl-Zarrabi

Chalmers, Architecture and Civil Engineering, Building Technology

Pär Johansson

Chalmers, Architecture and Civil Engineering, Building Technology

Alireza Marzbanrad

Chalmers, Mechanics and Maritime Sciences (M2), Vehicle Engineering and Autonomous Systems

Proceedings of the 14th International Vacuum Insulation Symposium (IVIS2019)

978-4-600-00218-3 (ISBN)

14th International Vacuum Insulation Symposium (IVIS2019)
Kyoto, Japan,

Preserve and improve energy efficiency in listed buildings using super insulation materials

Swedish Energy Agency (42856-1), 2016-12-01 -- 2019-06-30.

Driving Forces

Sustainable development

Subject Categories

Manufacturing, Surface and Joining Technology

Other Materials Engineering

Building Technologies

Areas of Advance


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