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Optimization-Based Operation of District Heating Networks: A Case Study for Two Real Sites

Author

Listed:
  • Markus Schindler

    (Forschung Burgenland GmbH, Campus 1, 7000 Eisenstadt, Burgenland, Austria
    These authors contributed equally to this work.)

  • Lukas Gnam

    (Fachhochschule Burgenland GmbH, Steinamangerstraße 21, 7423 Pinkafeld, Burgenland, Austria
    These authors contributed equally to this work.)

  • Markus Puchegger

    (Forschung Burgenland GmbH, Campus 1, 7000 Eisenstadt, Burgenland, Austria
    These authors contributed equally to this work.)

  • Karina Medwenitsch

    (Forschung Burgenland GmbH, Campus 1, 7000 Eisenstadt, Burgenland, Austria
    These authors contributed equally to this work.)

  • Patricia Jasek

    (Forschung Burgenland GmbH, Campus 1, 7000 Eisenstadt, Burgenland, Austria
    These authors contributed equally to this work.)

Abstract

To achieve the ambitious targets of net-zero greenhouse gas emissions by 2050, there is a need for change in all parts of society, industry, and mobility, as well as in all energy sectors. For this purpose, sector coupling plays a crucial role, e.g., in the form of coupling the electricity with the heat sector using power-to-heat systems. In this article, the effects of the integration of intermittent wind energy via a direct cable, as well as the integration of a boiler into district heating systems powered by a biomass plant and/or a gas boiler, are investigated. Sector coupling in the district heating networks is achieved via the integration of a boiler connected to a local grid station and the use of two air-to-water and two water-to-water heat pumps, which are solely powered by electricity produced by local wind turbines. Furthermore, this work evaluates the economic impacts of the exploding energy prices on the sustainability of district heating systems. Our analysis shows that despite high electricity prices, a reduction in fossil-fuel-based energy generators in the winter season can be determined, and thus a sustainable heat supply can be ensured.

Suggested Citation

  • Markus Schindler & Lukas Gnam & Markus Puchegger & Karina Medwenitsch & Patricia Jasek, 2023. "Optimization-Based Operation of District Heating Networks: A Case Study for Two Real Sites," Energies, MDPI, vol. 16(5), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:5:p:2120-:d:1076598
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    References listed on IDEAS

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    1. Ruhnau, Oliver & Hirth, Lion & Praktiknjo, Aaron, 2020. "Heating with wind: Economics of heat pumps and variable renewables," Energy Economics, Elsevier, vol. 92(C).
    2. Wirtz, Marco & Kivilip, Lukas & Remmen, Peter & Müller, Dirk, 2020. "5th Generation District Heating: A novel design approach based on mathematical optimization," Applied Energy, Elsevier, vol. 260(C).
    3. Wirtz, Marco & Neumaier, Lisa & Remmen, Peter & Müller, Dirk, 2021. "Temperature control in 5th generation district heating and cooling networks: An MILP-based operation optimization," Applied Energy, Elsevier, vol. 288(C).
    4. Li, Xue & Li, Wenming & Zhang, Rufeng & Jiang, Tao & Chen, Houhe & Li, Guoqing, 2020. "Collaborative scheduling and flexibility assessment of integrated electricity and district heating systems utilizing thermal inertia of district heating network and aggregated buildings," Applied Energy, Elsevier, vol. 258(C).
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