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Trygg, Louise
Publications (2 of 2) Show all publications
Lidberg, T., Swing Gustafsson, M., Myhren, J. A., Olofsson, T. & Trygg, L. (2017). Comparing different building energy efficiency refurbishment packages performed within different district heating systems. Paper presented at 8th International Conference on Applied Energy, ICAE 2016; Beijing; China. Energy Procedia, 105, 1719-1724
Open this publication in new window or tab >>Comparing different building energy efficiency refurbishment packages performed within different district heating systems
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2017 (English)In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 105, p. 1719-1724Article in journal (Refereed) Published
Abstract [en]

This study analyses the differences in primary energy (PE) use of a multi-family building refurbished with different refurbishment packages situated in different district heating systems (DHS). Four models of typical DHS are defined to represent the Swedish DH sector. The refurbishment packages are chosen to represent typical, yet innovative ways to improve the energy efficiency of a representative multi-family building in Sweden. The study was made from a broad system perspective, including valuation of changes in electricity use on the margin. The results show a significant difference in PE savings for the different refurbishment packages, depending on both the package itself as well as the type of DHS. Also, the package giving the lowest specific energy use per m2 was not the one which saved the most PE. © 2017 The Authors.

Keywords
building simulation, District heating, energy efficient refurbishment, multi-family building, primary energy
National Category
Civil Engineering
Research subject
Energy, Forests and Built Environments
Identifiers
urn:nbn:se:hig:diva-26500 (URN)10.1016/j.egypro.2017.03.492 (DOI)2-s2.0-85020745626 (Scopus ID)
Conference
8th International Conference on Applied Energy, ICAE 2016; Beijing; China
Available from: 2018-04-25 Created: 2018-04-25 Last updated: 2018-04-25Bibliographically approved
Lidberg, T., Olofsson, T. & Trygg, L. (2016). System impact of energy efficient building refurbishment within a district heated region. Energy, 106, 45-53
Open this publication in new window or tab >>System impact of energy efficient building refurbishment within a district heated region
2016 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 106, p. 45-53Article 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.

Keywords
Energy efficiency, District heating system, Refurbishment, Simulation, Greenhouse gases, Buildings
National Category
Energy Systems
Identifiers
urn:nbn:se:hig:diva-21766 (URN)10.1016/j.energy.2016.03.043 (DOI)000378659700005 ()2-s2.0-84977503634 (Scopus ID)
Funder
Knowledge Foundation
Available from: 2016-06-20 Created: 2016-06-20 Last updated: 2018-04-25Bibliographically approved
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