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Techno-Economic Evaluation of CSP–PV Hybrid Plants with Heat Pump in a Temperature Booster Configuration

Author

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  • Javier Iñigo-Labairu

    (German Aerospace Center (DLR), Institute of Solar Research, Linder Höhe, 51147 Köln, Germany)

  • Jürgen Dersch

    (German Aerospace Center (DLR), Institute of Solar Research, Linder Höhe, 51147 Köln, Germany)

  • Tobias Hirsch

    (German Aerospace Center (DLR), Institute of Solar Research, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany)

  • Stefano Giuliano

    (German Aerospace Center (DLR), Institute of Solar Research, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany)

  • Matthias Loevenich

    (German Aerospace Center (DLR), Institute of Solar Research, Linder Höhe, 51147 Köln, Germany)

  • Diego Córdoba

    (German Aerospace Center (DLR), Institute of Solar Research, Linder Höhe, 51147 Köln, Germany)

Abstract

Concentrated solar power (CSP)—photovoltaic (PV) hybrid power plants allow for the generation of cheap electrical energy with a high capacity factor (CF). A deep integration of both technologies offers synergies, using parts of the PV generated electricity for heating the thermal storage tank of the CSP unit. Such configurations have been previously studied for systems coupled by an electric resistance heater (ERH). In this work, the coupling of a CSP and a PV plant using a heat pump (HP) was analyzed due to the higher efficiency of heat pumps. The heat pump is used as a booster to lift the salt temperature in the storage system from 383 to 565 °C in order to reach higher turbine efficiency. A techno-economic analysis of the system was performed using the levelized cost of electricity (LCOE), the capacity factor and nighttime electricity fraction as variables for the representation. The CSP–PV hybrid with a booster heat pump was compared with other technologies such as a CSP–PV hybrid plant coupled by an electric heater, a standalone parabolic trough plant (PT), a photovoltaic system with battery storage (PV–BESS), and a PV thermal power plant (PVTP) consisting of a PV plant with an electric heater, thermal energy storage (TES) and a power block (PB).

Suggested Citation

  • Javier Iñigo-Labairu & Jürgen Dersch & Tobias Hirsch & Stefano Giuliano & Matthias Loevenich & Diego Córdoba, 2024. "Techno-Economic Evaluation of CSP–PV Hybrid Plants with Heat Pump in a Temperature Booster Configuration," Energies, MDPI, vol. 17(11), pages 1-20, May.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:11:p:2634-:d:1404919
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    References listed on IDEAS

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    1. Arpagaus, Cordin & Bless, Frédéric & Uhlmann, Michael & Schiffmann, Jürg & Bertsch, Stefan S., 2018. "High temperature heat pumps: Market overview, state of the art, research status, refrigerants, and application potentials," Energy, Elsevier, vol. 152(C), pages 985-1010.
    2. Walden, Jasper V.M. & Bähr, Martin & Glade, Anselm & Gollasch, Jens & Tran, A. Phong & Lorenz, Tom, 2023. "Nonlinear operational optimization of an industrial power-to-heat system with a high temperature heat pump, a thermal energy storage and wind energy," Applied Energy, Elsevier, vol. 344(C).
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    1. Jürgen Dersch & Michael Karl Wittmann & Tobias Hirsch, 2025. "Comparison of Molten Salts and Thermal Oil in Parabolic Trough Power Plants for Different Sites and Different Storage Capacities," Energies, MDPI, vol. 18(2), pages 1-14, January.

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