{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,7]],"date-time":"2026-04-07T07:31:31Z","timestamp":1775547091489,"version":"3.50.1"},"reference-count":7,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2022,10,5]],"date-time":"2022-10-05T00:00:00Z","timestamp":1664928000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Wind Engineering"],"published-print":{"date-parts":[[2023,4]]},"abstract":"<jats:p> The Betz\u2019s limit for the maximum efficiency of an ideal wind turbine imposes a maximum value of about 60% on the conversion of the kinetic energy of an airflow into work. In this paper, we analyze the reason for this value because, from a thermodynamic point of view, it can be 100%. The present work explains the reason for this difference, since it appears to be relevant from a didactic point of view. However, from a practical point of view, the Betz\u2019s limit does not affect in any way the more useful and widespread expression for calculating the ideal maximum power of a wind turbine, which is at the origin of the referred limit. Complementarily, two approaches for the calculation of the theoretical maximum efficiency, in line with thermodynamics, are also presented in this work. <\/jats:p>","DOI":"10.1177\/0309524x221130109","type":"journal-article","created":{"date-parts":[[2022,10,5]],"date-time":"2022-10-05T09:54:33Z","timestamp":1664963673000},"page":"491-496","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":16,"title":["The Betz limit and the corresponding thermodynamic limit"],"prefix":"10.1177","volume":"47","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6881-5885","authenticated-orcid":false,"given":"Paulo","family":"Coelho","sequence":"first","affiliation":[{"name":"CEFT\u2014Transport Phenomena Research Center, Department of Mechanical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal"},{"name":"ALiCE\u2014Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal"}]}],"member":"179","published-online":{"date-parts":[[2022,10,5]]},"reference":[{"key":"bibr1-0309524X221130109","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.125.064503"},{"key":"bibr2-0309524X221130109","doi-asserted-by":"publisher","DOI":"10.3103\/S1068337221010047"},{"key":"bibr3-0309524X221130109","doi-asserted-by":"publisher","DOI":"10.1260\/0309-524X.37.4.441"},{"key":"bibr4-0309524X221130109","unstructured":"\u00c7engel YA, Boles MA (2015) Thermodynamics: An Engineering Approach, 8th edn. New York, NY: McGraw-Hill, pp. 58."},{"key":"bibr5-0309524X221130109","doi-asserted-by":"publisher","DOI":"10.1063\/1.328340"},{"key":"bibr6-0309524X221130109","doi-asserted-by":"publisher","DOI":"10.1002\/we.218"},{"key":"bibr7-0309524X221130109","doi-asserted-by":"publisher","DOI":"10.1016\/j.rser.2010.01.005"}],"container-title":["Wind Engineering"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0309524X221130109","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/0309524X221130109","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0309524X221130109","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,3,2]],"date-time":"2025-03-02T19:32:16Z","timestamp":1740943936000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/0309524X221130109"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,10,5]]},"references-count":7,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2023,4]]}},"alternative-id":["10.1177\/0309524X221130109"],"URL":"https:\/\/doi.org\/10.1177\/0309524x221130109","relation":{},"ISSN":["0309-524X","2048-402X"],"issn-type":[{"value":"0309-524X","type":"print"},{"value":"2048-402X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,10,5]]}}}