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Analysis of the Cooperation of a Compressor Heat Pump with a PV System

Author

Listed:
  • Krzysztof Tomczuk

    (Institute of Mechanical Engineering, Warsaw University of Life Sciences, Nowoursynowska St. 164, 02-787 Warszawa, Poland)

  • Paweł Obstawski

    (Institute of Mechanical Engineering, Warsaw University of Life Sciences, Nowoursynowska St. 164, 02-787 Warszawa, Poland)

Abstract

The decarbonization of heating systems is one of the present political and legislative directions of the European Union and its Member States. The main activities concern the energy performance of buildings and energy efficiency. The mentioned UE directives are the basis for the financial support of high-emission fossil fuel thermal energy source replacement with emission-free ones, in particular heat pumps. Other aspects are the support of PV installations and the thermal insulation of buildings. 85% of EU buildings were built before 2000, and among those, 75% have poor energy performance. Therefore, a significant number of buildings have only high-temperature wall radiators, and this was a motivation to prepare this article. The main innovation of this research was a new theoretical design of a high-temperature heat pump based on ecological refrigerants. The presented solution allows wall radiators to receive a hot water supply with temperatures of up to 85 °C during external temperatures of up to −20 °C. Typical heat pumps do not have these kinds of parameters, so the authors decided to verify the possibility of operating this device in such a wide temperature range. Another important aspect was the analysis of PV support. Finally, this paper investigates the possibility of heating an energy-efficient house with the newly designed high-temperature heat pump. Depending on the location in Poland, i.e., Suwałki, Warsaw, and Wrocław, the total electric energy supplied to the compressors was 2538–3364 kWh. The energy provided by the PV to supply power to the compressors is 482–570 kWh. The achieved PV energy self-consumption is 16.9–19.0%. The Seasonal Coefficient of Performance (SCOP) of the heat pump is 1.825–2.038 without PV and 2.515–2.970 with PV.

Suggested Citation

  • Krzysztof Tomczuk & Paweł Obstawski, 2024. "Analysis of the Cooperation of a Compressor Heat Pump with a PV System," Sustainability, MDPI, vol. 16(9), pages 1-29, April.
  • Handle: RePEc:gam:jsusta:v:16:y:2024:i:9:p:3797-:d:1386993
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    References listed on IDEAS

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