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Rätt fönster i olika väderstreck: En undersökning av energieffektiva fönsters påverkan på byggnaders energiprestanda
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
2014 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The Swedish building stock accounts for nearly 40 percent of the total energy

consumption in the country. Properties built today are likely to last for 100 years or

longer. This places high demands on long-term and smart energy solutions that will

keep the future Swedish building stock energy consumption at low levels. This thesis

has focused on examining how the energy performance of buildings is affected by

different choices of window types in different cardinal directions. The objective was

to obtain a basis for recommendations on how window properties can be optimized

for different types of buildings and orientations. The results are based on energy

simulations of two different types of buildings, an office building and an apartment


The conclusion is that the heat gain coefficient shown to have a major impact on the

energy performance of buildings. This questions the Swedish energy labeling system

that only takes into account the window's U-value.

During the process of finding suitable energy efficient windows, a calculation algorithm

has been developed. This algorithm can be used by energy simulation experts to

estimate an unknown ST-value of window glass combination when the g-value is

known. The algorithm applies to coated solar control glass combinations.

Place, publisher, year, edition, pages
UPTEC STS, ISSN 1650-8319 ; 14008
National Category
Engineering and Technology
URN: urn:nbn:se:uu:diva-224016OAI: diva2:714822
Educational program
Systems in Technology and Society Programme
Available from: 2014-05-08 Created: 2014-04-29 Last updated: 2014-05-08Bibliographically approved

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