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Sector Coupling Potential of a District Heating Network by Consideration of Residual Load and CO 2 Emissions

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  • Melanie Werner

    (Technische Hochschule Ingolstadt, Institute of new Energy Systems, Research Group ‘Domestic Energy Systems’, Esplanade 10, 85049 Ingolstadt, Germany)

  • Sebastian Muschik

    (Technische Hochschule Ingolstadt, Institute of new Energy Systems, Research Group ‘Domestic Energy Systems’, Esplanade 10, 85049 Ingolstadt, Germany)

  • Mathias Ehrenwirth

    (Technische Hochschule Ingolstadt, Institute of new Energy Systems, Research Group ‘Domestic Energy Systems’, Esplanade 10, 85049 Ingolstadt, Germany)

  • Christoph Trinkl

    (Technische Hochschule Ingolstadt, Institute of new Energy Systems, Research Group ‘Domestic Energy Systems’, Esplanade 10, 85049 Ingolstadt, Germany)

  • Tobias Schrag

    (Technische Hochschule Ingolstadt, Institute of new Energy Systems, Research Group ‘Domestic Energy Systems’, Esplanade 10, 85049 Ingolstadt, Germany)

Abstract

The growing share of fluctuating renewable electricity production within the German energy system causes the increasing necessity for flexible consumers, producers, and storage technologies to balance supply and demand. District heating networks with combined heat and power units, Power-to-Heat applications, and thermal energy storage capacities can serve as one of these flexible options. In this context, a simulation model of the district heating network of the rural community Dollnstein , Germany , was built. With the residual load of different regional areas ( Germany , Bavaria , Eichstätt , Dollnstein ) it is investigated, how the heat generators can operate in an electricity market beneficial way. Two different control algorithms were evaluated: Due to a correlation between the residual loads and the CO 2 emissions of the electricity mix, the CO 2 savings achieved by this control algorithm are determined. Another way to operate electricity market beneficial is to consider the current CO 2 emissions of each region. The main outcomes of this paper are, that there is a high potential for sector coupling by shifting the operation times of a CHP and a heat pump according to the residual load. The electricity demand of the heat pump can be met in terms of low CO 2 emissions of the electricity mix, while the CHP can replace electricity with high CO 2 emissions. These results can be improved, by considering not the residual load but the current CO 2 emissions in the control algorithm.

Suggested Citation

  • Melanie Werner & Sebastian Muschik & Mathias Ehrenwirth & Christoph Trinkl & Tobias Schrag, 2022. "Sector Coupling Potential of a District Heating Network by Consideration of Residual Load and CO 2 Emissions," Energies, MDPI, vol. 15(17), pages 1-18, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6281-:d:900183
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    References listed on IDEAS

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