Comment on “Economies of scale: The physics basis” [J. Appl. Phys. 121, 044907 (2017)]
A recent article [A. Bejan, A. Almerbati, and S. Lorente, J. Appl. Phys. 121, 044907 (2017)] takes note of a relationship between size and efficiency that appears in the performance data of many engines and power plants. The authors attempt to interpret this phenomenon thermodynamically, concluding...
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description | A recent article [A. Bejan, A. Almerbati, and S. Lorente, J. Appl. Phys. 121, 044907 (2017)] takes note of a relationship between size and efficiency that appears in the performance data of many engines and power plants. The authors attempt to interpret this phenomenon thermodynamically, concluding that the relationship is predicted by a general thermal power plant model. However, this conclusion is the result of an elementary error. The efficiency of the idealized thermal model in fact stays constant or decreases with increasing size. |
doi_str_mv | 10.1063/1.4983510 |
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Appl. Phys. 121, 044907 (2017)]</title><source>AIP Journals Complete</source><source>Alma/SFX Local Collection</source><creator>Swartz, C. H.</creator><creatorcontrib>Swartz, C. H.</creatorcontrib><description>A recent article [A. Bejan, A. Almerbati, and S. Lorente, J. Appl. Phys. 121, 044907 (2017)] takes note of a relationship between size and efficiency that appears in the performance data of many engines and power plants. The authors attempt to interpret this phenomenon thermodynamically, concluding that the relationship is predicted by a general thermal power plant model. However, this conclusion is the result of an elementary error. The efficiency of the idealized thermal model in fact stays constant or decreases with increasing size.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.4983510</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Economies of scale ; Electric power generation ; Mathematical models ; Thermal analysis ; Thermal power plants</subject><ispartof>Journal of applied physics, 2017-05, Vol.121 (20)</ispartof><rights>Author(s)</rights><rights>2017 Author(s). 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Phys. 121, 044907 (2017)] takes note of a relationship between size and efficiency that appears in the performance data of many engines and power plants. The authors attempt to interpret this phenomenon thermodynamically, concluding that the relationship is predicted by a general thermal power plant model. However, this conclusion is the result of an elementary error. The efficiency of the idealized thermal model in fact stays constant or decreases with increasing size.</description><subject>Applied physics</subject><subject>Economies of scale</subject><subject>Electric power generation</subject><subject>Mathematical models</subject><subject>Thermal analysis</subject><subject>Thermal power plants</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp90M1KAzEQB_AgCtbqwTcIeFFx10w-djfeSqlfFPRQL4qENJulW9rNutkKvfVB9OX6JEZa9CB4Gob58Z9hEDoGEgNJ2CXEXGZMANlBHSCZjFIhyC7qEEIhymQq99GB91NCADImO-i57-ZzW7XYVXi9-hgYV7l5aT12BfZGz-wVHk0sridLXxqPx9qXfr36xC_3Me7V9SzGj2EUY6BwgQnnkqT4lBJIz14P0V6hZ94ebWsXPV0PRv3baPhwc9fvDSPDEtpGMku54VkiJQdtcxDjIqcsMUJIw00RehbiEsGozZOEm7CJgjB6rHmhWcZZF51scuvGvS2sb9XULZoqrFSBhpMEBRLU2UaZxnnf2ELVTTnXzVIBUd-vU6C2rwv2fGO9KVvdlq76we-u-YWqzov_8N_kL9tceHc</recordid><startdate>20170528</startdate><enddate>20170528</enddate><creator>Swartz, C. H.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20170528</creationdate><title>Comment on “Economies of scale: The physics basis” [J. Appl. Phys. 121, 044907 (2017)]</title><author>Swartz, C. H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c362t-9874c4869941aed15bfd236c559c4cf15b30176532ed664c121215caba4fa3843</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Applied physics</topic><topic>Economies of scale</topic><topic>Electric power generation</topic><topic>Mathematical models</topic><topic>Thermal analysis</topic><topic>Thermal power plants</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Swartz, C. H.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Swartz, C. H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comment on “Economies of scale: The physics basis” [J. Appl. Phys. 121, 044907 (2017)]</atitle><jtitle>Journal of applied physics</jtitle><date>2017-05-28</date><risdate>2017</risdate><volume>121</volume><issue>20</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>A recent article [A. Bejan, A. Almerbati, and S. Lorente, J. Appl. Phys. 121, 044907 (2017)] takes note of a relationship between size and efficiency that appears in the performance data of many engines and power plants. The authors attempt to interpret this phenomenon thermodynamically, concluding that the relationship is predicted by a general thermal power plant model. However, this conclusion is the result of an elementary error. The efficiency of the idealized thermal model in fact stays constant or decreases with increasing size.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4983510</doi><tpages>2</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Applied physics Economies of scale Electric power generation Mathematical models Thermal analysis Thermal power plants |
title | Comment on “Economies of scale: The physics basis” [J. Appl. Phys. 121, 044907 (2017)] |
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