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Durable and robust vacuum insulation technology for buildings
School of Civil and Architectural Engineering, KTH.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Buildning science - material science. (Materials Technology, KTH Research School)
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Buildning science - material science. (Materials Technology, KTH Research School)
(Ingenieurbüro Trinius, Hamburg)
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2011 (English)In: XII DBMC: 12th International Conference on Durability of Building Materials and Components (Vol. 4) / [ed] Michael A. Lacasse, Vasco Peixoto de Freitas, Helena Corvacho, Porto: FEUP Edições , 2011, , p. 8Conference paper, Published paper (Refereed)
Abstract [en]

Vacuum insulation panels (VIPs) provide unprecedented opportunities for obtaining excellent thermal insulation with light and slender constructions. This article discusses the performance over time of VIPs, and the possibilities to overcome the current problems related to fragility and limited durability. Aerogels are together with fumed silica among the most competitive core materials for VIP's. The use of classical aerogels, as produced in autoclaves is, however, limited due to the high production costs. The fumed silica on the other hand requires vacuum levels that are difficult to maintain with the currently available vacuum envelopes. A material with comparatively smaller pores will on the other hand allow obtaining low thermal conductivity at higher pressure (less vacuum) and will therefore reduce the pressure difference over the envelope. There is therefore much to be gained by reducing the pore size. New cost and performance efficient silica aerogels offers opportunities to enhance the properties of the panels by customizing the pore structure and pore size distribution. Building technologies and how the panels are applied in a manner that improves the structural, thermal and hygroscopic performances of vacuum insulated constructions have been studied and are discussed.

Place, publisher, year, edition, pages
Porto: FEUP Edições , 2011. , p. 8
Keywords [en]
Vacuum insulation technologies, Performance over time, Building technology, Aerogel, Core materials
National Category
Materials Engineering Building Technologies
Identifiers
URN: urn:nbn:se:hig:diva-13796ISBN: 978-972-752-132-6 (print)OAI: oai:DiVA.org:hig-13796DiVA, id: diva2:603416
Conference
12th International Conference on Durability of Building Materials and Components (XII DBMC), Porto - Portugal, April 12th -15th, 2011
Available from: 2013-02-05 Created: 2013-02-05 Last updated: 2018-03-13Bibliographically approved

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Sjöström, ChristerNorberg, PeterTwumasi, Ebenezer

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