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Heat transfer tests on EPS material and massive timber wall component
Högskolan Dalarna, Akademin Industri och samhälle, Energiteknik.
Högskolan Dalarna, Akademin Industri och samhälle, Energiteknik.
2018 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
Abstract [en]

Timber walls are known to be an energy efficient component in the building envelope.

These building elements are essential in the passive design and have been pointed out to

their ability to regulate the indoor climate and reduce energy demand. Heat transfer

measurements of thermal transmittance value of Iso-timber wall component have been

performed with the climate chamber at three temperature differences. The influence of

temperature variations on the thermal conduction of the wall were investigated. The

temperature on the warm side was kept at room temperature 20 °C while the cold side

temperature was decreased from 0 C to -20 C during the tests. As the temperature

difference is increased, the thermal transmittance value of the timber wall component

decreased slightly due to decrease in the thermal conductivity value. The effect of density

and porosity on the thermal conductivity may be related to the presence of air voids and

cell boundaries inside the timber wall. Results have showed that the U-value of the timber

wall component decreases at higher temperature differences which indicates the higher

degree of insulation of the timber wall component.

Ort, förlag, år, upplaga, sidor
2018.
Nyckelord [en]
Heat transfer – timber walls – climate chamber – EPS material – U-value measurements.
Nationell ämneskategori
Energiteknik
Identifikatorer
URN: urn:nbn:se:du-28673OAI: oai:DiVA.org:du-28673DiVA, id: diva2:1254333
Tillgänglig från: 2018-10-09 Skapad: 2018-10-09

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