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Control concepts of a radiant wall working as thermal energy storage for peak load shifting of a heat pump coupled to a PV array

Author

Listed:
  • Romaní, Joaquim
  • Belusko, Martin
  • Alemu, Alemu
  • Cabeza, Luisa F.
  • de Gracia, Alvaro
  • Bruno, Frank

Abstract

Photovoltaic panels (PV) coupled to a heat pump supplying heat to a radiant wall is a system with potential to reduce the imported energy from the grid for heating and cooling of buildings. The radiant wall works as a thermal storage system (TES) allowing storage of the PV output and, thus, peak load shifting. However, the management of these technologies is complex due to the dynamics of the system. This paper presents several control concepts with different purposes such as shifting energy use to off-peak periods, maximizing self-consumption of PV output, and minimization of imported energy from the grid. An experimentally validated numerical model from previous research was used to investigate and compare the different proposed control concepts. Results showed that charging the wall with solar energy resulted in higher overall energy use of the heat pump, while the imported grid energy was significantly reduced, thanks to self-consumption.

Suggested Citation

  • Romaní, Joaquim & Belusko, Martin & Alemu, Alemu & Cabeza, Luisa F. & de Gracia, Alvaro & Bruno, Frank, 2018. "Control concepts of a radiant wall working as thermal energy storage for peak load shifting of a heat pump coupled to a PV array," Renewable Energy, Elsevier, vol. 118(C), pages 489-501.
    • Handle: RePEc:eee:renene:v:118:y:2018:i:c:p:489-501
    DOI: 10.1016/j.renene.2017.11.036
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    References listed on IDEAS

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    1. Romaní, Joaquim & Pérez, Gabriel & de Gracia, Alvaro, 2017. "Experimental evaluation of a heating radiant wall coupled to a ground source heat pump," Renewable Energy, Elsevier, vol. 105(C), pages 520-529.
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    5. Vallati, A. & Ocłoń, P. & Colucci, C. & Mauri, L. & de Lieto Vollaro, R. & Taler, J., 2019. "Energy analysis of a thermal system composed by a heat pump coupled with a PVT solar collector," Energy, Elsevier, vol. 174(C), pages 91-96.
    6. Romaní, Joaquim & Belusko, Martin & Alemu, Alemu & Cabeza, Luisa F. & de Gracia, Alvaro & Bruno, Frank, 2018. "Optimization of deterministic controls for a cooling radiant wall coupled to a PV array," Applied Energy, Elsevier, vol. 229(C), pages 1103-1110.
    7. Sarmas, Elissaios & Spiliotis, Evangelos & Stamatopoulos, Efstathios & Marinakis, Vangelis & Doukas, Haris, 2023. "Short-term photovoltaic power forecasting using meta-learning and numerical weather prediction independent Long Short-Term Memory models," Renewable Energy, Elsevier, vol. 216(C).
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