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Plant efficiency: a sensitivity analysis of the capacity factor for fusion power plants with high recirculated power

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dc.contributor.authorMulder, R.A.
dc.contributor.authorMelese, Y.G.
dc.contributor.authorLopes Cardozo, N.J.
dc.contributor.orcidMulder, R.A. [0000-0002-9684-6267]
dc.contributor.orcidLopes Cardozo, N.J. [0000-0002-2020-1235]
dc.date.accessioned2021-11-23T17:12:17Z
dc.date.available2021-11-23T17:12:17Z
dc.date.issued2021-03-17
dc.date.submitted2020-09-04
dc.date.updated2021-11-23T17:12:17Z
dc.description.abstractAbstract: The plant efficiency of a nuclear fusion power plant is considered. During nominal operation, the plant efficiency is determined by the thermodynamic efficiency and the recirculated power fraction. However, on average the reactor operates below the nominal power, even when the long shutdown periods for large maintenance are left outside the averaging. Hence, next to the recirculated power fraction the capacity factor must be factored in. An expression for the plant efficiency which incorporates both factors is given. It is shown that the combination of high recirculated power fraction and a low capacity factor, results in poor plant efficiency. This is due to the fact that in a fusion reactor the recirculated power remains high if it runs at reduced output power. It is argued that, at least for a first generation of power plants, this combination is likely to occur. Worked out example calculations are given for the models of the power plant conceptual study. Finally, the impact on the competitiveness of fusion on the energy market is discussed. This analysis stresses the importance of the development of plant designs with low recirculated power fraction.
dc.identifier.doi10.17863/CAM.78435
dc.identifier.eissn1741-4326
dc.identifier.issn0029-5515
dc.identifier.othernfabe68b
dc.identifier.otherabe68b
dc.identifier.othernf-104110.r1
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/330990
dc.languageen
dc.publisherIOP Publishing
dc.subjectPaper
dc.subjectplant efficiency
dc.subjectcapacity factor
dc.subjectPPCS
dc.subjectrecirculated power
dc.subjectrecirculating power
dc.subjectroadmap
dc.subjectDEMO
dc.titlePlant efficiency: a sensitivity analysis of the capacity factor for fusion power plants with high recirculated power
dc.typeArticle
dcterms.dateAccepted2021-02-15
prism.issueIdentifier4
prism.publicationNameNuclear Fusion
prism.volume61
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by/4.0/
rioxxterms.versionVoR
rioxxterms.versionofrecord10.1088/1741-4326/abe68b

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