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Techno-Economic Optimization and Benchmarking of a Solar-Only Powered Combined Cycle with High-Temperature TES Upstream the Gas Turbine

In: Green Energy and Environment

Author

Listed:
  • Fritz Zaversky
  • Inigo Les
  • Marcelino Sanchez
  • Benoit Valentin
  • Jean-Florian Brau
  • Frederic Siros
  • Jonathon McGuire
  • Flavien Berard

Abstract

This work presents a techno-economic parametric study of an innovative central receiver solar thermal power plant layout that applies the combined cycle (CC) as thermodynamic power cycle and a multi-tower solar field configuration together with open volumetric air receivers (OVARs). The topping gas turbine (GT) is powered by an air-air heat exchanger (two heat exchanger trains in the case of reheat). In order to provide dispatchability, a high-temperature thermocline TES system is placed upstream the gas turbine. The aim is threefold, (i) investigating whether the multi-tower concept has a techno-economic advantage with respect to conventional single-tower central receiver plants, (ii) indicating the techno-economic optimum power plant configuration, and (iii) benchmarking the techno-economic optimum of the CC plant against that of a conventional single-cycle Rankine steam plant with the same receiver and TES technology. It is concluded that the multi-tower configuration has a techno-economic advantage with respect to the conventional single-tower arrangement above a total nominal solar power level of about 150 MW. However, the benchmarking of the CC against a Rankine single-cycle power plant layout shows that the CC configuration has despite its higher solar-to-electric conversion efficiency a higher LCOE. The gain in electricity yield is not enough to outweigh the higher investment costs of the more complex CC plant layout.

Suggested Citation

  • Fritz Zaversky & Inigo Les & Marcelino Sanchez & Benoit Valentin & Jean-Florian Brau & Frederic Siros & Jonathon McGuire & Flavien Berard, 2020. "Techno-Economic Optimization and Benchmarking of a Solar-Only Powered Combined Cycle with High-Temperature TES Upstream the Gas Turbine," Chapters, in: Eng Hwa Yap & Andrew Huey Ping Tan (ed.), Green Energy and Environment, IntechOpen.
    • Handle: RePEc:ito:pchaps:206131
    DOI: 10.5772/intechopen.90410
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    File URL: https://www.intechopen.com/chapters/70392
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    Citations

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    Cited by:

    1. Rovense, Francesco & Reyes-Belmonte, Miguel Ángel & Romero, Manuel & González-Aguilar, José, 2022. "Thermo-economic analysis of a particle-based multi-tower solar power plant using unfired combined cycle for evening peak power generation," Energy, Elsevier, vol. 240(C).

    More about this item

    Keywords

    concentrated solar power; solar combined cycle; multi-tower central receiver; open volumetric air receiver (OVAR);
    All these keywords.

    JEL classification:

    • Q20 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - General
    • Q40 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - General

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