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Embodied greenhouse gas emissions from refurbishment of residential building stock to achieve a 50% operational energy reduction
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- Brown, Nils W. O. (författare)
- KTH,Miljöstrategisk analys (fms)
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- Olsson, Stefan (författare)
- KTH,Miljöstrategisk analys (fms)
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- Malmqvist, Tove (författare)
- KTH,Miljöstrategisk analys (fms)
- (creator_code:org_t)
- Elsevier BV, 2014
- 2014
- Engelska.
- Ingår i: Building and Environment. - : Elsevier BV. - 0360-1323 .- 1873-684X. ; 79, s. 46-56
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
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- Mitigating climate change through operational energy reduction in existing buildings is of highest priority for policy-makers in Europe and elsewhere. At the same time there is increasing understanding of the significance of impacts arising from material production for buildings. The aim of this work has therefore been to evaluate the importance of embodied GWP for refurbishment for operational energy reduction on a stockwide basis. It is further intended to judge the relative significance of embodied GWP for specific refurbishment measures implemented for operational energy reduction. We study the case of operational energy reduction in the Swedish residential building stock by 50% compared to 1995. The total embodied GWP to achieve the noted operational energy reduction is 0.35 Mt CO2-e/year. 83% of this total is due to ventilation and window measures alone. Compared with previous studies assessing GWP mitigation from operational energy reduction, the "GWP payback time" is just over 3 years. Many types of measure that contribute significantly to achieving the above operational energy goal had average embodied GWP between 10 and 20 g CO2-e/kW h operational energy reduction, notably window and ventilation measures. Indoor temperature reduction (to 20 degrees C), was also significant for stockwide operational energy reduction but had a very low GWP of 0.4 g CO2-e/kW h operational energy reduction. If this measure proves unfeasible to implement on a stockwide basis then more expensive measures with higher embodied GWP will be needed to achieve the stated energy reduction goal.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering (hsv//eng)
Nyckelord
- Life-cycle thinking
- Climate change
- Energy-efficiency
- Building stocks
- Refurbishment
- Material
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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