{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T11:19:43Z","timestamp":1775042383629,"version":"3.50.1"},"reference-count":21,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2024,12,8]],"date-time":"2024-12-08T00:00:00Z","timestamp":1733616000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2024,12,8]],"date-time":"2024-12-08T00:00:00Z","timestamp":1733616000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/00481\/2020"],"award-info":[{"award-number":["UIDB\/00481\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Mechanical Engineering Education"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:p>\n                    Teaching and learning Thermodynamics have challenges. Energy and the First Law as the Energy Conservation Principle are usually well accepted. This is not the case with the Second Law, entropy, entropy generation, and the consequences of the Second Law. Analogies can be used to help learn and understand the Second Law of Thermodynamics, entropy, entropy generation, irreversibility, and power cycles. The present work proposes a Thermodynamics-Economics analogy. The analog of heat transfer (flowing in the decreasing temperature direction, driven by a temperature difference) is the traded merchandise transfer (flowing in the increasing unit price direction) in\n                    <jats:italic toggle=\"yes\">normal<\/jats:italic>\n                    trading operations. Developments start with the economic analog of Clausius inequality. The analog of entropy is the merchandise financial value, and the analog of the entropy generation is the financial value generation. Irreversibility is associated with entropy generation, and economic irreversibility is related to economic entropy (financial value) generation. The reversible and irreversible power cycles also have their economic analogs. The irreversibility associated with heat transfer through a finite temperature difference also has its economic analog. The economic Second Law developments are more familiar to students and more easily understandable, which can help them learn the Second Law of Thermodynamics and its implications.\n                  <\/jats:p>","DOI":"10.1177\/03064190241298616","type":"journal-article","created":{"date-parts":[[2024,12,8]],"date-time":"2024-12-08T18:52:57Z","timestamp":1733683977000},"page":"276-302","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Analogy to help learn and understand the second law of thermodynamics, entropy, entropy generation, irreversibility, and power cycles"],"prefix":"10.1177","volume":"54","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4975-6055","authenticated-orcid":false,"given":"V. A. 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Cambridge, MA, USA: American Institute of Physics, 2007, pp. 265\u2013270. DOI: https:\/\/doi.org\/10.1063\/1.2979041."},{"key":"e_1_3_5_14_2","volume-title":"Fundamentals of Engineering Thermodynamics","author":"Moran MJ","year":"2018","unstructured":"Moran MJ, Shapiro HN, Boettner DD, et al. Fundamentals of Engineering Thermodynamics. 9th Ed. New York: Wiley, 2018.","edition":"9"},{"key":"e_1_3_5_15_2","volume-title":"Thermodynamics \u2013 An Engineering Approach","author":"\u00c7engel YA","year":"2019","unstructured":"\u00c7engel YA, Boles MA, Kanoglu M. Thermodynamics \u2013 An Engineering Approach. 9th Ed. 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