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LUND UNIVERSITY LIBRARIES

Byggfuktens inverkan på energibehovet

Ståhl, Viktor and Tornberg, Jacob (2013)
Programmes in Helesingborg
Abstract
Abstract:
Building materials such as concrete and aerated concrete, contain significant amounts of moisture after manufacturing. This moisture has to dry so the material will come in equilibrium with the indoor climate. Drying of moisture in constructions requires energy. Part of this energy will be during the construction stage and the remaining energy will be used during the operation stage.
According to the Swedish building code, the construction of new houses and bigger renovations requires that energy calculations be done for the house showing that it meets Swedish energy use requirements. The calculation needs to be compared to the actual energy use of the building within 24 months after the building has been taken into operation.... (More)
Abstract:
Building materials such as concrete and aerated concrete, contain significant amounts of moisture after manufacturing. This moisture has to dry so the material will come in equilibrium with the indoor climate. Drying of moisture in constructions requires energy. Part of this energy will be during the construction stage and the remaining energy will be used during the operation stage.
According to the Swedish building code, the construction of new houses and bigger renovations requires that energy calculations be done for the house showing that it meets Swedish energy use requirements. The calculation needs to be compared to the actual energy use of the building within 24 months after the building has been taken into operation. The building will still be drying out during this stage.
In this report, three multi-family buildings in Kv. Jungmannen in Malmö have been analysed in regard to the drying of the construction. The houses have a concrete frame and are built in 2010/2011.
An energy calculation was done in VIP-Energy. The calculation has been corrected and updated with real input data. The amount of moisture evaporated during 2012 due to the drying of materials was calculated with TorkaS.
When the calculated energy use for heating was compared to the actual energy use for heating, it was found that the real energy use for heating was higher than the calculated value.
The calculations show that the drying of building moisture during the year 2012 should have increased the energy need for heating by about 8 %. This can explain some of the difference between the energy calculation and the actual energy use. (Less)
Please use this url to cite or link to this publication:
author
Ståhl, Viktor and Tornberg, Jacob
organization
year
type
M2 - Bachelor Degree
subject
keywords
byggfukt, energibehov, energiberäkning, fuktmätning, uttorkning, energiavstämning
language
Swedish
id
3971480
date added to LUP
2013-08-13 03:40:18
date last changed
2018-10-18 10:27:30
@misc{3971480,
  abstract     = {Abstract:
Building materials such as concrete and aerated concrete, contain significant amounts of moisture after manufacturing. This moisture has to dry so the material will come in equilibrium with the indoor climate. Drying of moisture in constructions requires energy. Part of this energy will be during the construction stage and the remaining energy will be used during the operation stage.
According to the Swedish building code, the construction of new houses and bigger renovations requires that energy calculations be done for the house showing that it meets Swedish energy use requirements. The calculation needs to be compared to the actual energy use of the building within 24 months after the building has been taken into operation. The building will still be drying out during this stage.
In this report, three multi-family buildings in Kv. Jungmannen in Malmö have been analysed in regard to the drying of the construction. The houses have a concrete frame and are built in 2010/2011.
An energy calculation was done in VIP-Energy. The calculation has been corrected and updated with real input data. The amount of moisture evaporated during 2012 due to the drying of materials was calculated with TorkaS.
When the calculated energy use for heating was compared to the actual energy use for heating, it was found that the real energy use for heating was higher than the calculated value.
The calculations show that the drying of building moisture during the year 2012 should have increased the energy need for heating by about 8 %. This can explain some of the difference between the energy calculation and the actual energy use.},
  author       = {Ståhl, Viktor and Tornberg, Jacob},
  keyword      = {byggfukt,energibehov,energiberäkning,fuktmätning,uttorkning,energiavstämning},
  language     = {swe},
  note         = {Student Paper},
  title        = {Byggfuktens inverkan på energibehovet},
  year         = {2013},
}