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Exergy loss based allocation method for hybrid renewable-fossil power plants applied to an integrated solar combined cycle

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  • Iora, Paolo
  • Beretta, Gian Paolo
  • Ghoniem, Ahmed F.

Abstract

This paper presents a novel Exergy Loss based (EL) allocation method for the electricity produced in hybrid renewable-fossil power plants. The rationale behind this approach is that the electricity allocated to the fossil and renewable resources are obtained by subtracting from the respective source input exergies, the corresponding exergy losses, that are identified by dividing the plant into three parts; namely: the renewable, fossil and hybrid sections. The advantage of this approach is that the allocation is based only on the performance of the power plant given by its internal exergy balances, and hence the results are independent from any external arbitrary assumptions on the reference conversion efficiencies of the two resources, as it is typical of classical methods. We show that the allocations obtained using the proposed EL approach, applied to an existing integrated solar combined cycle, are consistent and comparable with the allocations obtained using the Separate Production Reference (SPR) method, as long as reasonable efficiency values of the reference scenario are selected.

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  • Iora, Paolo & Beretta, Gian Paolo & Ghoniem, Ahmed F., 2019. "Exergy loss based allocation method for hybrid renewable-fossil power plants applied to an integrated solar combined cycle," Energy, Elsevier, vol. 173(C), pages 893-901.
    • Handle: RePEc:eee:energy:v:173:y:2019:i:c:p:893-901
    DOI: 10.1016/j.energy.2019.02.095
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    3. M. Nourpour & M. H. Khoshgoftar Manesh & A. Pirozfar & M. Delpisheh, 2023. "Exergy, Exergoeconomic, Exergoenvironmental, Emergy-based Assessment and Advanced Exergy-based Analysis of an Integrated Solar Combined Cycle Power Plant," Energy & Environment, , vol. 34(2), pages 379-406, March.
    4. Silva Ortiz, Pablo & Flórez-Orrego, Daniel & de Oliveira Junior, Silvio & Maciel Filho, Rubens & Osseweijer, Patricia & Posada, John, 2020. "Unit exergy cost and specific CO2 emissions of the electricity generation in the Netherlands," Energy, Elsevier, vol. 208(C).
    5. Wang, Gang & Dong, Boyi & Chen, Zeshao, 2021. "Design and behaviour estimate of a novel concentrated solar-driven power and desalination system using S–CO2 Brayton cycle and MSF technology," Renewable Energy, Elsevier, vol. 176(C), pages 555-564.

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