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System impact of energy efficient building refurbishment within a district heated region
Dalarna University, Falun, Sweden.
Dalarna University, Falun, Sweden; Umeå University, Umeå, Sweden.
Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, Faculty of Science & Engineering. University of Gävle, Gävle, Sweden.ORCID iD: 0000-0003-2860-1820
2016 (English)In: Energy, ISSN 0360-5442;1873-6785, Vol. 106, 45-53 p.Article in journal (Refereed) Published
Abstract [en]

The energy efficiency of the European building stock needs to be increased in order to fulfill the climate goals of the European Union. To be able to evaluate the impact of energy efficient refurbishment in matters of greenhouse gas emissions, it is necessary to apply a system perspective where not only the building but also the surrounding energy system is taken into consideration.

This study examines the impact that energy efficient refurbishment of multi-family buildings has on the district heating and the electricity production. It also investigates the impact on electricity utilization and emissions of greenhouse gases.

The results from the simulation of four energy efficiency building refurbishment packages were used to evaluate the impact on the district heating system. The packages were chosen to show the difference between refurbishment actions that increase the use of electricity when lowering the heat demand, and actions that lower the heat demand without increasing the electricity use. The energy system cost optimization modeling tool MODEST (Model for Optimization of Dynamic Energy Systems with Time-Dependent Components and Boundary Conditions) was used.

When comparing two refurbishment packages with the same annual district heating use, this study shows that a package including changes in the building envelope decreases the greenhouse gas emissions more than a package including ventilation measures.

Place, publisher, year, edition, pages
Pergamon Press, 2016. Vol. 106, 45-53 p.
Keyword [en]
Energy efficiency; District heating system; Refurbishment; Simulation; Greenhouse gases; Buildings
National Category
Other Environmental Engineering
Identifiers
URN: urn:nbn:se:liu:diva-126774DOI: 10.1016/j.energy.2016.03.043ISI: 000378659700005OAI: oai:DiVA.org:liu-126774DiVA: diva2:916879
Note

Funding agencies:The authors would like to thank Ricardo Ramirez Villegas from Byggpartner i Dalarna AB for significant help with the building simulations and Malin Karlsson from AB Borlange Energi and Goran Ugrenovic from AB Stora Tunabyggen for contributing with their professional advice. The work has been carried out under the auspices of the industrial post-graduate school Reesbe, which is financed by the Knowledge Foundation, 20120273 (KK-stiftelsen).

Available from: 2016-04-05 Created: 2016-04-05 Last updated: 2016-08-15

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Olofsson, ThomasTrygg, Louise
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