Preliminary Design of S-CO2 Turbomachinery and its Influence on the Performance of an Integrated Solar Combined Cycle

SolarPACES

Authors

DOI:

https://doi.org/10.52825/solarpaces.v3i.2376

Keywords:

S-CO2 Power Cycles, Concentrated Solar Plants, S-CO2 Compressors, S-CO2 Turbines, Decarbonization, Integrated Combined Power Cycles

Abstract

Supercritical CO2 power cycles emerge as the next-generation standard for Concentrated Solar Power technology mainly due to their high efficiency and reduced footprint. This study investigates the role of the S-CO2 turbomachinery in an Integrated Solar Combined Cycle, and performs the design and optimization of the geometries to maximize their efficiency using mean-line models. Centrifugal compressors, axial-flow and radial-inflow turbines have been considered. Various geometries are identified to achieve similar high efficiencies, highlighting the need for additional criteria in selecting the optimal design. For this particular combined cycle, the results also reveal that variations in turbomachinery efficiency have a relatively minor impact on overall cycle efficiency, with turbine efficiency exerting a more decisive influence than compressor efficiency.

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Published

2026-01-28

How to Cite

Arenas, E., Muñoz, M., Cantizano, A., Linares, J. I., Montes, M. J., & Rovira, A. (2026). Preliminary Design of S-CO2 Turbomachinery and its Influence on the Performance of an Integrated Solar Combined Cycle: SolarPACES . SolarPACES Conference Proceedings, 3. https://doi.org/10.52825/solarpaces.v3i.2376

Conference Proceedings Volume

Vol. 3 (2024): SolarPACES 2024, 30th International Conference on Concentrating Solar Power, Thermal, and Chemical Energy Systems

Section

Power Cycles

License

Copyright (c) 2026 Eva Arenas, Marta Muñoz, Alexis Cantizano, José Ignacio Linares, María José Montes, Antonio Rovira

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Received 2024-09-07
Accepted 2025-12-27
Published 2026-01-28

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