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Utvärdering av köldbryggor - En inventering och utveckling av Skanskas standardbyggdelar

Persson, Erik and Gölén, Ludde (2012)
Programmes in Helesingborg
Abstract
The purpose of this study is to evaluate and try to reduce thermal bridges in Skanska's standard building components. Thermal bridges occur when an inferior insulating material breaks through better insulated. You then get an increased energy loss in these areas compared to the rest of the particular building part. In addition to increased energy loss, thermal bridges can also give rise to poor thermal climate, higher relative humidity on the inside, soiling, cold drafts and misleading valuesfor temperature controls. After failures in the construction of Hammarby Sjöstad. Skanska began to develop a variety of standard building elements to improve the efficiency of construction and minimize the above mentioned risks. These building elements... (More)
The purpose of this study is to evaluate and try to reduce thermal bridges in Skanska's standard building components. Thermal bridges occur when an inferior insulating material breaks through better insulated. You then get an increased energy loss in these areas compared to the rest of the particular building part. In addition to increased energy loss, thermal bridges can also give rise to poor thermal climate, higher relative humidity on the inside, soiling, cold drafts and misleading valuesfor temperature controls. After failures in the construction of Hammarby Sjöstad. Skanska began to develop a variety of standard building elements to improve the efficiency of construction and minimize the above mentioned risks. These building elements have successively been developed over the years and our task was to examine a selection of these for thermal bridges, find out how big they are and try to find solutions to reduce them. To investigate the building elements, we used a heat transfer program called HEAT3 where the heat flow through the wall can be calculated and descriptive images can be produced. When we calculated the thermal bridges, we drew a reference wall for each type of wall, which we then compared with the respective structural part, the differences between the heat flow through the reference wall and every structural component with the same area gave the value for the thermal bridge. We have improved the thermal bridges and placed them in a reference building that we have designed in order to see how much they really affect energy consumption. We found that thermal bridges have a relatively large effect on energy losses in Skanska's standard building components; they contribute to an increase of between 20- 67 percent of the energy losses in our reference building. The window connection is the part that contributes most to the energy consumption in our reference house and is the part we've looked at most. Keywords: Thermal bridges, Energy, calculations, HEAT2, HEAT3, Skanska standard building components, BBR, Psi factor. (Less)
Please use this url to cite or link to this publication:
author
Persson, Erik and Gölén, Ludde
organization
year
type
M2 - Bachelor Degree
subject
keywords
köldbryggor, energianvändning, beräkningar, heat 2, heat3, skanska standardbyggdelar, bbr, psi-värde
language
Swedish
id
2837379
alternative location
http://portal.ch.lu.se/Campus.NET/Services/Publication/Export.aspx?id=2258&type=doc
date added to LUP
2012-06-26
date last changed
2012-07-12 15:39:51
@misc{2837379,
  abstract     = {The purpose of this study is to evaluate and try to reduce thermal bridges in Skanska's standard building components. Thermal bridges occur when an inferior insulating material breaks through better insulated. You then get an increased energy loss in these areas compared to the rest of the particular building part. In addition to increased energy loss, thermal bridges can also give rise to poor thermal climate, higher relative humidity on the inside, soiling, cold drafts and misleading valuesfor temperature controls. After failures in the construction of Hammarby Sjöstad. Skanska began to develop a variety of standard building elements to improve the efficiency of construction and minimize the above mentioned risks. These building elements have successively been developed over the years and our task was to examine a selection of these for thermal bridges, find out how big they are and try to find solutions to reduce them. To investigate the building elements, we used a heat transfer program called HEAT3 where the heat flow through the wall can be calculated and descriptive images can be produced. When we calculated the thermal bridges, we drew a reference wall for each type of wall, which we then compared with the respective structural part, the differences between the heat flow through the reference wall and every structural component with the same area gave the value for the thermal bridge. We have improved the thermal bridges and placed them in a reference building that we have designed in order to see how much they really affect energy consumption. We found that thermal bridges have a relatively large effect on energy losses in Skanska's standard building components; they contribute to an increase of between 20- 67 percent of the energy losses in our reference building. The window connection is the part that contributes most to the energy consumption in our reference house and is the part we've looked at most. Keywords: Thermal bridges, Energy, calculations, HEAT2, HEAT3, Skanska standard building components, BBR, Psi factor.},
  author       = {Persson, Erik and Gölén, Ludde},
  keyword      = {köldbryggor,energianvändning,beräkningar,heat 2,heat3,skanska standardbyggdelar,bbr,psi-värde},
  language     = {swe},
  note         = {Student Paper},
  title        = {Utvärdering av köldbryggor - En inventering och utveckling av Skanskas standardbyggdelar},
  year         = {2012},
}