The Impact on System Performance When Renovating a Multifamily Building Stock in a District Heated Region

Stefan Blomqvist, Lina La Fleur, Shahnaz Amiri, Patrik Rohdin and Louise Ödlund (former Trygg)
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Stefan Blomqvist: Division of Energy Systems, Department of Management and Engineering, Linköping University, SE-581 83 Linköping, Sweden
Lina La Fleur: Division of Energy Systems, Department of Management and Engineering, Linköping University, SE-581 83 Linköping, Sweden
Shahnaz Amiri: Division of Energy Systems, Department of Management and Engineering, Linköping University, SE-581 83 Linköping, Sweden
Patrik Rohdin: Division of Energy Systems, Department of Management and Engineering, Linköping University, SE-581 83 Linköping, Sweden
Louise Ödlund (former Trygg): Division of Energy Systems, Department of Management and Engineering, Linköping University, SE-581 83 Linköping, Sweden

Sustainability, 2019, vol. 11, issue 8, 1-18

Abstract: In Sweden, 90% of multifamily buildings utilize district heat and a large portion is in need of renovation. The aim is to analyze the impact of renovating a multifamily building stock in a district heating and cooling system, in terms of primary energy savings, peak power demands, electricity demand and production, and greenhouse gas emissions on local and global levels. The study analyzes scenarios regarding measures on the building envelope, ventilation, and substitution from district heat to ground source heat pump. The results indicate improved energy performance for all scenarios, ranging from 11% to 56%. Moreover, the scenarios present a reduction of fossil fuel use and reduced peak power demand in the district heating and cooling system ranging from 1 MW to 13 MW, corresponding to 4–48 W/m 2 heated building area. However, the study concludes that scenarios including a ground source heat pump generate significantly higher global greenhouse gas emissions relative to scenarios including district heating. Furthermore, in a future fossil-free district heating and cooling system, a reduction in primary energy use will lead to a local reduction of emissions along with a positive effect on global greenhouse gas emissions, outperforming measures with a ground source heat pump.

Keywords: district heating; multifamily buildings; renovation; primary energy use; energy system modeling; greenhouse gas emissions (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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