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Renovation of Swedish single-family houses to passive house standard : Sensitivity analysis

Ekström, Tomas LU ; Davidsson, Henrik LU ; Bernardo, Ricardo LU and Blomsterberg, Åke LU (2016)
Abstract (Swedish)
A third of Sweden’s two million single-family houses were built in the period 1961-1980, and many of them are in need of renovation. Energy use in these houses is high, and they are fairly homogeneous in technical terms. A previous study of four reference houses showed that final energy use could be reduced in theory by approximately 65-75 % after renovation, by implementing conventional passive house components renovation measures. This paper evaluates the results and uncertainties arising from the previous study by performing a local sensitivity analysis of the most important input parameters, such as number of inhabitants, climate zone, orientation of the houses and alternative renovation measures in a Swedish context. The results... (More)
A third of Sweden’s two million single-family houses were built in the period 1961-1980, and many of them are in need of renovation. Energy use in these houses is high, and they are fairly homogeneous in technical terms. A previous study of four reference houses showed that final energy use could be reduced in theory by approximately 65-75 % after renovation, by implementing conventional passive house components renovation measures. This paper evaluates the results and uncertainties arising from the previous study by performing a local sensitivity analysis of the most important input parameters, such as number of inhabitants, climate zone, orientation of the houses and alternative renovation measures in a Swedish context. The results presented in this paper show that the previously estimated final energy use reduction can be increased even further, to 75-80 %, by introducing additional renovation measures. The climate zone was shown to have the largest impact, with twice as much space heating required in the coldest evaluated climate compared to the mildest. The impact from inhabitants was less than expected, due to a counterbalancing impact on the final energy use from internal gains and domestic hot water. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Deep renovation, Energy retrofit, Detailed energy simulations, Single-family houses
host publication
IBPSA Asia Conference
publisher
International Building Performance Simulation Association (IBPSA)
language
English
LU publication?
yes
id
5274ccf4-e242-447e-859b-5d7cd23dc917
date added to LUP
2017-11-07 12:55:04
date last changed
2019-02-06 04:00:46
@inproceedings{5274ccf4-e242-447e-859b-5d7cd23dc917,
  abstract     = {A third of Sweden’s two million single-family houses were built in the period 1961-1980, and many of them are in need of renovation. Energy use in these houses is high, and they are fairly homogeneous in technical terms. A previous study of four reference houses showed that final energy use could be reduced in theory by approximately 65-75 % after renovation, by implementing conventional passive house components renovation measures. This paper evaluates the results and uncertainties arising from the previous study by performing a local sensitivity analysis of the most important input parameters, such as number of inhabitants, climate zone, orientation of the houses and alternative renovation measures in a Swedish context. The results presented in this paper show that the previously estimated final energy use reduction can be increased even further, to 75-80 %, by introducing additional renovation measures. The climate zone was shown to have the largest impact, with twice as much space heating required in the coldest evaluated climate compared to the mildest. The impact from inhabitants was less than expected, due to a counterbalancing impact on the final energy use from internal gains and domestic hot water.},
  author       = {Ekström, Tomas and Davidsson, Henrik and Bernardo, Ricardo and Blomsterberg, Åke},
  keyword      = {Deep renovation,Energy retrofit,Detailed energy simulations,Single-family houses},
  language     = {eng},
  publisher    = {International Building Performance Simulation Association (IBPSA)},
  title        = {Renovation of Swedish single-family houses to passive house standard : Sensitivity analysis},
  year         = {2016},
}