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Golvvärme och isolering i samspel: En jämförande studie av inverkan från isoleringsmaterial på energiförbrukning och värmeförluster
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Sustainable Buildings.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Sustainable Buildings.
2025 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Underfloor heating and insulation in interaction : A comparative study of the impact of insulation materials on energy consumption and heat losses (Swedish)
Abstract [sv]

Denna fördjupning undersöker hur olika isoleringsmaterial i en golvkonstruktion i kombination med värmeslinga påverkar energiförbrukningen för ett småhus. Genom att analysera EPS, PUR, PIR och enbart betong beräknades effektbehovet vid DVUT samt den årliga energiförbrukningen för uppvärmning. Resultaten visar att PIR ger den största energibesparingen följt av PUR, EPS och betong. Skillnaden mellan materialen är relativt liten, speciellt i byggnader som redan är välisolerade. För det enskilda hushållet sparas endast ett par hundra kronor per år, vilket gör att det inte alltid är motiverat att investera i extra golvisolering. Det finns däremot potential till stora energibesparingar på samhällsnivå om denna lösning implementeras i många byggnader. Resultatet visar även att den extra isoleringen minskar andelen outnyttjad värme som går förlorad nedåt i marken. Utveckling av fördjupningen kan ske genom att analysera fler material, andra byggnadstyper eller optimera isoleringstjocklek i relation till kostnad.

Abstract [en]

This study investigates how different insulation materials in combination with underfloor heating systems affect the energy consumption of a house. By analyzing EPS, PUR, PIR and solely concrete, the power demand during the coldest day of the year and the total annual energy usage for the house could be calculated. The results show that PIR provides the greatest energy savings followed by PUR, EPS and concrete. However, the differences between the materials are relatively small, especially in buildings that are already well insulated. For individual households, the economic benefit is limited, making additional floor insulation less justifiable in such cases. However, on a larger scale the collective effect of improved insulation across many buildings could lead to significant energy savings. The study also highlights that the choice of insulation affects the amount of heat lost downward into the ground. Future studies could explore additional materials, other building types, or optimal insulation thickness in relation to cost.

 

Place, publisher, year, edition, pages
2025.
Series
TRITA-ABE-MBT ; 25439
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-365689OAI: oai:DiVA.org:kth-365689DiVA, id: diva2:1977458
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Available from: 2025-06-26 Created: 2025-06-26

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