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Techno-Economic Analysis of Increasing the Share of Renewable Energy Sources in Heat Generation Using the Example of a Medium-Sized City in Poland

Author

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  • Piotr Krawczyk

    (Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warsaw, Poland)

  • Krzysztof Badyda

    (Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warsaw, Poland)

  • Aleksandra Dzido

    (Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warsaw, Poland)

Abstract

In many countries located in Central–Eastern Europe, there is a need for heating in the autumn and winter seasons. In Poland, this has been met over the years, mainly through the development of centralized heating systems. The heat sources in such systems are based on fossil fuels like coal or gas. New regulations and climate concerns are forcing a transformation of existing systems towards green energy. The research presents two scenarios of such a change. The first focuses on maintaining centralized heat sources but increases the share of renewables in the heat supply. This can be realized by weather-independent, high-power sources such as biomass boilers and/or high-temperature heat pumps (HP) such as sewage heat pumps or ground source HP. The second scenario changes the location of the heat sources to more dispersed locations so that the unit power can be lower. In this case, renewable heat sources can be used at favorable locations in the system. Among the sources included in this scenario are solar panels, photovoltaic panels, micro wind turbines, and ground source heat pumps with local heat storage. These are characterized by low energy density. Their dispersion in the urban space can contribute to the desired energy generation, which would be impossible to achieve in the centralized scenario. Furthermore, the transmission losses are lower in this case, so lower heating medium temperatures are required. The existing district heating network can be used as a buffer or heat storage, contributing to stable system operation. The article presents a comparative analysis of these solutions.

Suggested Citation

  • Piotr Krawczyk & Krzysztof Badyda & Aleksandra Dzido, 2025. "Techno-Economic Analysis of Increasing the Share of Renewable Energy Sources in Heat Generation Using the Example of a Medium-Sized City in Poland," Energies, MDPI, vol. 18(4), pages 1-13, February.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:4:p:884-:d:1589939
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    References listed on IDEAS

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