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DC Field | Value | Language |
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dc.contributor.author | Aqel, O | - |
dc.contributor.author | White, M | - |
dc.contributor.author | Sayma, A | - |
dc.date.accessioned | 2024-07-04T08:10:51Z | - |
dc.date.available | 2024-07-04T08:10:51Z | - |
dc.date.issued | 2024-01-16 | - |
dc.identifier | ORCiD: Abdulnaser Sayma https://orcid.org/0000-0003-2315-0004 | - |
dc.identifier | 051003 | - |
dc.identifier | TURBO-23-1236 | - |
dc.identifier.citation | Aqel, O., White, M. and Sayma, A. (2024) 'Loss Analysis in Radial Inflow Turbines for Supercritical CO<inf>2</inf> Mixtures', Journal of Turbomachinery, 146 (5), 051003, pp. 1 - 12. doi: 10.1115/1.4064193. | en_US |
dc.identifier.issn | 0889-504X | - |
dc.identifier.uri | https://bura.brunel.ac.uk/handle/2438/29296 | - |
dc.description | Data Availability Statement: The datasets generated and supporting the findings of this article are obtainable from the corresponding author upon reasonable request. | en_US |
dc.description | Paper No: TURBO-23-1236 | - |
dc.description.abstract | Recent studies suggest that CO2 mixtures can reduce the costs of concentrated solar power plants. Radial inflow turbines (RIT) are considered suitable for small to medium-sized CO2 power plants (100 kW to 10 MW) due to aerodynamic and cost factors. This paper quantifies the impact of CO2 doping on RIT design by comparing 1D mean-line designs and aerodynamic losses of pure CO2 RITs with three CO2 mixtures: titanium tetrachloride (TiCl4), sulfur dioxide (SO2), and hexafluorobenzene (C6F6). Results show that turbine designs share similar rotor shapes and velocity diagrams for all working fluids. However, factors like clearance-to-blade height ratio, turbine pressure ratio, and fluid viscosity cause differences in turbine efficiency. When normalized for these factors, differences in total-to-static efficiency become less than 0.1%. However, imposing rotational speed limits reveals greater differences in turbine designs and efficiencies. The imposition of rotational speed limits reduces total-to-static efficiency across all fluids, with a maximum 15% reduction in 0.1 MW CO2 compared to a 3% reduction in CO2/TiCl4 turbines of the same power. Among the studied mixtures, CO2/TiCl4 turbines achieve the highest efficiency, followed by CO2/C6F6 and CO2/SO2. For example, 100 kW turbines achieve total-to-static efficiencies of 80.0%, 77.4%, 78.1%, and 75.5% for CO2/TiCl4, CO2/C6F6, CO2/SO2, and pure CO2, respectively. In 10 MW turbines, efficiencies are 87.8%, 87.3%, 87.5%, and 87.2% in the same order. | en_US |
dc.description.sponsorship | European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 814985. | en_US |
dc.format.extent | 1 - 12 | - |
dc.format.medium | Print-Electronic | - |
dc.language | English | - |
dc.language.iso | en_US | en_US |
dc.publisher | American Society of Mechanical Engineers | en_US |
dc.rights | Copyright © 2024 by ASME / The Authors; reuse license CC-BY (https://creativecommons.org/licenses/by/4.0/). | - |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | - |
dc.subject | radial inflow turbine | en_US |
dc.subject | CO2 mixtures | en_US |
dc.subject | transcritical CO2 cycles | en_US |
dc.subject | turbine aerodynamic design | en_US |
dc.subject | loss analysis | en_US |
dc.title | Loss Analysis in Radial Inflow Turbines for Supercritical CO<inf>2</inf> Mixtures | en_US |
dc.title.alternative | Loss Analysis in Radial Inflow Turbines for Supercritical CO2 Mixtures | - |
dc.type | Article | en_US |
dc.date.dateAccepted | 2023-11-17 | - |
dc.identifier.doi | https://doi.org/10.1115/1.4064193 | - |
dc.relation.isPartOf | Journal of Turbomachinery | - |
pubs.issue | 5 | - |
pubs.publication-status | Published | - |
pubs.volume | 146 | - |
dc.identifier.eissn | 1528-8900 | - |
dc.rights.license | https://creativecommons.org/licenses/by/4.0/legalcode.en | - |
dc.rights.holder | ASME / The Authors | - |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
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FullText.pdf | Copyright © 2024 by ASME / The Authors; reuse license CC-BY (https://creativecommons.org/licenses/by/4.0/). | 1.13 MB | Adobe PDF | View/Open |
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