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Optimering av en ytterväggsprodukt: En undersökning av alternativa isoleringsmaterial
Linnaeus University, Faculty of Technology, Department of Building Technology.
Linnaeus University, Faculty of Technology, Department of Building Technology.
2018 (Swedish)Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
Optimization of an external wall product : An investigation of alternative insulation materials (English)
Abstract [sv]

AquaVillas CasaBona väggsystem innehåller i dagsläget isoleringsmaterialet EPS, vilket har visat svagheter vid brand. Målet med denna studie var att föreslå ett alternativt isoleringsmaterial till EPS med hänsyn till brand, energianvändning och U-värde, samt energiåtgång och koldioxidutsläpp vid tillverkning. Syftet var att det föreslagna alternativa isoleringsmaterialet skall kunna användas av tillverkare i väggprodukter som ett alternativ till EPS.

I denna studie undersöktes fyra olika isoleringsmaterial genom kritisk granskning av vetenskapliga artiklar och litteratur, samt genom fältstudie och beräkningar i energiberäkningsprogrammet VIP-energy. De isoleringsmaterial som undersöktes var expanderad polystyren, polyuretan, polyisocyanurat och stenull.

Resultaten visade att EPS, PUR och PIR är avsevärt sämre ur brandsynpunkt än stenull. Vid tillverkning av de olika isoleringsmaterialen fick EPS bäst resultat när det gäller koldioxidutsläpp. För energiåtgång vid tillverkning fick EPS bäst resultat då isoleringsskiktet i det undersökta väggsystemet var 200 mm tjockt, men då utgångspunkten istället var att väggen skulle ha ett U-värde på 0,112 W/m2K, fick stenull bäst resultat i denna kategori. PUR och PIR fick sämst resultat gällande både energiåtgång och koldioxidutsläpp vid tillverkning. Stenull gav väggen den bästa energianvändningen men samtliga material klarade kraven i Boverkets Byggregler.

Vid sammanvägning av samtliga undersökta egenskaper för de olika isoleringsmaterialen anses det mest lämpliga materialet för en vägg vara stenull.

Abstract [en]

The AquaVilla CasaBona wall system currently contains the insulation material EPS, which has shown weaknesses while exposed to fire. The aim for this study was to suggest an alternative insulation material to EPS regarding fire, energy use and U-vale as well as energy use and carbon dioxide emissions for manufacturing. The purpose was that the suggested alternative insulation material should be able to be used by manufacturers in wall products as an alternative to EPS.

In this study, four different insulation materials were examined by critically reviewing scientific articles and literature, as well as field studies and calculations with the energy calculation program VIP-energy. The insulation materials investigated were expanded polystyrene, polyurethane, polyisocyanurate and rockwool.

The findings showed that EPS, PUR and PIR were not nearly as good as rockwool regarding fire. When manufacturing the various insulation materials, EPS gives the best results in terms of carbon dioxide emissions. EPS gives the best results regarding energy use for manufacturing when the insulation layer in the investigated wall system was 200 mm thick, but when the wall was given a U-value of 0,112 W/m2K, rockwool got the best results in this category. PUR and PIR gave the worst results regarding both energy use and carbon dioxide emissions at manufacturing. Rockwool generated the best results regarding energy use, but all of the materials met the requirements from Boverkets Byggregler.

When comparing all the investigated characteristics of the various insulation materials, the most suitable material for an external wall was considered to be rockwool.

Place, publisher, year, edition, pages
2018. , p. 54
Keywords [en]
expanded polystyrene, polyurethane, polyisocyanurate, rockwool, wall system, insulation material, thermal conductivity, energy use, carbon dioxide emissions, fire
Keywords [sv]
expanderad polystyren, polyuretan, polyisocyanurat, stenull, väggsystem, isoleringsmaterial, värmeledningsförmåga, energianvändning, koldioxidutsläpp, brand
National Category
Construction Management Building Technologies
Identifiers
URN: urn:nbn:se:lnu:diva-76446OAI: oai:DiVA.org:lnu-76446DiVA, id: diva2:1228186
External cooperation
AquaVilla AB
Subject / course
Byggteknik
Educational program
Civil Engineering Programme, Building and Construction, 180 credits
Supervisors
Examiners
Available from: 2018-06-28 Created: 2018-06-27 Last updated: 2018-06-28Bibliographically approved

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