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Towards sustainable renovation of façades: A case study of additional double glass façade on lamella house from energy saving perspective
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Sustainable Buildings.
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The pace of development in modern society since the Industrial Revolution has beenunprecedented and it keeps proceeding in a more aggressive and accelerated phase. However, thisdevelopment is a highly energy demanded action which is resulting an increased exploitation ofnatural resources, and subsequently, an expanded pressure on our environment, which sometimesconflicts between proprietors. On the other hand, it also creates great opportunities fortechnological developments as well as new research fields. As one of the biggest energy consumers,it is a crucial task that building and real estate sector follow this development trend by inventingand practicing new methods and technologies in order to limit energy usage and increase energyefficiency for a contribution to sustainable development in the society.When considering improvement of energy efficiency of the buildings from the million homeprogramme, it is worth to carry out energy analysis before renovation works begins in order toobtain a holistic overview of the energy issues those buildings are struggling with. For dwellingsfrom almost 50 years ago, one of the biggest issues is the large energy usage for heating due to theheat loss to the ambience through the building’s envelope. More precisely, the heat losses throughroof, walls, windows, doors, ventilations and infiltrations. This thesis will focus on technologicalsolutions that can control the heat losses caused by convection and conduction through the externalwalls, windows and doors, which approximately stands for nearly 55% of the total heat loss for ahouse from the million home programme. Furthermore, with help of passive heating and coolingstrategies, improvement of both energy performance and indoor thermal comfort on the studiedlamellar house from the million home programme will be achieved.According to the simulation results, the installation of double glass façade on the outside of theexternal walls can reduce energy consumption, as well as keep indoor thermal comfort in desirableboundaries. In the simulated executive model, the delivered energy has been reduced to 95.3𝐾𝑊ℎ/𝑚2𝐴𝑡𝑒𝑚𝑝 𝑎𝑛𝑑 𝑦𝑒𝑎𝑟 from the basic model with 121.8 𝐾𝑊ℎ/𝑚2𝐴𝑡𝑒𝑚𝑝 𝑎𝑛𝑑 𝑦𝑒𝑎𝑟. However,In the exclusive model the delivered energy has successfully declined to 71.1 𝐾𝑊ℎ/𝑚2𝐴𝑡𝑒𝑚𝑝 𝑎𝑛𝑑 𝑦𝑒𝑎𝑟 , which is under the maximum permitted value (85.0 𝐾𝑊ℎ/viii𝑚2𝐴𝑡𝑒𝑚𝑝 𝑎𝑛𝑑 𝑦𝑒𝑎𝑟) in the Swedish building code. Both of models has maintained the occupancysatisfaction in adequate boundaries.

Place, publisher, year, edition, pages
2019.
Series
TRITA-ABE-MBT ; 19692
Keywords [en]
renovation, façade, Million Programme, IDA ice, Trombe wall, double glass façade, sustainability
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-263621OAI: oai:DiVA.org:kth-263621DiVA, id: diva2:1368598
Available from: 2019-11-07 Created: 2019-11-07

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