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Exergy analysis of the impact of a heat exchanger on performance of an integrated sodium-salt CSP plant
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. Politecnico di Torino, Italy.ORCID iD: 0000-0001-6108-5229
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2022 (English)In: SOLARPACES 2020: 26th International Conference on Concentrating Solar Power and Chemical Energy Systems, AIP Publishing , 2022, Vol. 2445Conference paper, Published paper (Refereed)
Abstract [en]

High-temperature receivers are critical for third-generation (Gen3) Concentrating Solar Power (CSP) technology to achieve high system efficiencies, and play the role of converting concentrated sunlight into heat. In this paper, two CSP systems with different working fluids in the receiver are examined in order to achieve identical supply of heat to the power block: a direct high-temperature chloride salt system and an indirect high-temperature sodium receiver with an associated heat exchanger to heat the same chloride salt. The presented numerical model indicates that the indirect sodium-salt system has a 4.37% higher exergy efficiency than the direct chloride salt system. The exergy destruction in the added sodium-salt heat exchanger was only 0.54%, which did not outweigh the performance benefits gained from using a sodium receiver, when compared to the direct salt case with no heat exchanger. Even at lower DNIs, the better heat-transfer characteristics of the sodium are responsible for its improved performance compared to salt in the receivers.

Place, publisher, year, edition, pages
AIP Publishing , 2022. Vol. 2445
Series
AIP Conference Proceedings, ISSN 0094-243X ; 2445
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:kth:diva-317645DOI: 10.1063/5.0087912ISI: 000861996900173Scopus ID: 2-s2.0-85131204349OAI: oai:DiVA.org:kth-317645DiVA, id: diva2:1695713
Conference
26th International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2020, 28 September 2020 through 2 October 2020, Freiburg, Virtual
Note

QC 20220914

Part of proceedings: ISBN 978-073544195-8

Available from: 2022-09-14 Created: 2022-09-14 Last updated: 2022-11-07Bibliographically approved

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Guccione, Salvatore

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
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