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A Systematic Approach to Predict the Economic and Environmental Effects of the Cost-Optimal Energy Renovation of a Historic Building District on the District Heating System

Author

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  • Vlatko Milić

    (Division of Energy Systems, Department of Management and Engineering, Linköping University, 581 83 Linköping, Sweden)

  • Shahnaz Amiri

    (Division of Energy Systems, Department of Management and Engineering, Linköping University, 581 83 Linköping, Sweden
    Division of Building, Energy and Environment Technology, Department of Technology and Environment, University of Gävle, 801 76 Gävle, Sweden)

  • Bahram Moshfegh

    (Division of Energy Systems, Department of Management and Engineering, Linköping University, 581 83 Linköping, Sweden
    Division of Building, Energy and Environment Technology, Department of Technology and Environment, University of Gävle, 801 76 Gävle, Sweden)

Abstract

The economic and environmental performance of a district heating (DH) system is to a great extent affected by the size and dynamic behavior of the DH load. By implementing energy efficiency measures (EEMs) to increase a building’s thermal performance and by performing cost-optimal energy renovation, the operation of the DH system will be altered. This study presents a systematic approach consisting of building categorization, life cycle cost (LCC) optimization, building energy simulation and energy system optimization procedures, investigating the profitability and environmental performance of cost-optimal energy renovation of a historic building district on the DH system. The results show that the proposed approach can successfully be used to predict the economic and environmental effects of cost-optimal energy renovation of a building district on the local DH system. The results revealed that the financial gains of the district are between 186 MSEK (23%) and 218 MSEK (27%) and the financial losses for the DH system vary between 117–194 MSEK (5–8%). However, the suggested renovation measures decrease the local and global CO 2 emissions by 71–75 metric ton of CO 2eq. /year (4%) and 3545–3727 metric ton of CO 2eq. /year (41–43%), respectively. Total primary energy use was decreased from 57.2 GWh/year to 52.0–52.2 GWh/year.

Suggested Citation

  • Vlatko Milić & Shahnaz Amiri & Bahram Moshfegh, 2020. "A Systematic Approach to Predict the Economic and Environmental Effects of the Cost-Optimal Energy Renovation of a Historic Building District on the District Heating System," Energies, MDPI, vol. 13(1), pages 1-25, January.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:1:p:276-:d:305589
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    References listed on IDEAS

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