Entransy, Entransy Dissipation and Entransy Loss for Analyses of Heat Transfer and Heat-Work Conversion Processes
Entransy is a parameter proposed in recent years to describe the potential of heat in an object. Its balance equation was established based on the energy equation of heat transfer, which contains entransy, entransy flow, entransy dissipation and entransy production due to heat source. It has been pr...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2013-07-01
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| Series: | Journal of Thermal Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jtst/8/2/8_337/_pdf/-char/en |
| _version_ | 1811329503480250368 |
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| author | XueTao CHENG XinGang LIANG |
| author_facet | XueTao CHENG XinGang LIANG |
| author_sort | XueTao CHENG |
| collection | DOAJ |
| description | Entransy is a parameter proposed in recent years to describe the potential of heat in an object. Its balance equation was established based on the energy equation of heat transfer, which contains entransy, entransy flow, entransy dissipation and entransy production due to heat source. It has been proved that the total entransy must be reduced whenever there is heat transfer in an isolated system, leading to entransy dissipation. Entransy dissipation and entransy-based thermal resistance can be used to optimize heat conduction, heat convection, thermal radiation and the design of heat exchangers and heat exchanger networks. On the other hand, the entransy balance equation was also established for heat-work conversion processes. With the equation, entransy loss, which is the difference between the input and output heat entransy flows, was defined and related to thermodynamic processes. For the discussed thermodynamic cycles, it was found that larger entransy loss leads to larger output work. |
| first_indexed | 2024-04-13T15:45:10Z |
| format | Article |
| id | doaj.art-3791d3ccc02e4a108af5e73e29cef2e0 |
| institution | Directory Open Access Journal |
| issn | 1880-5566 |
| language | English |
| last_indexed | 2024-04-13T15:45:10Z |
| publishDate | 2013-07-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Thermal Science and Technology |
| spelling | doaj.art-3791d3ccc02e4a108af5e73e29cef2e02022-12-22T02:41:00ZengThe Japan Society of Mechanical EngineersJournal of Thermal Science and Technology1880-55662013-07-018233735210.1299/jtst.8.337jtstEntransy, Entransy Dissipation and Entransy Loss for Analyses of Heat Transfer and Heat-Work Conversion ProcessesXueTao CHENG0XinGang LIANG1School of Aerospace, Tsinghua UniversitySchool of Aerospace, Tsinghua UniversityEntransy is a parameter proposed in recent years to describe the potential of heat in an object. Its balance equation was established based on the energy equation of heat transfer, which contains entransy, entransy flow, entransy dissipation and entransy production due to heat source. It has been proved that the total entransy must be reduced whenever there is heat transfer in an isolated system, leading to entransy dissipation. Entransy dissipation and entransy-based thermal resistance can be used to optimize heat conduction, heat convection, thermal radiation and the design of heat exchangers and heat exchanger networks. On the other hand, the entransy balance equation was also established for heat-work conversion processes. With the equation, entransy loss, which is the difference between the input and output heat entransy flows, was defined and related to thermodynamic processes. For the discussed thermodynamic cycles, it was found that larger entransy loss leads to larger output work.https://www.jstage.jst.go.jp/article/jtst/8/2/8_337/_pdf/-char/enentransyentransy dissipationentransy lossheat transfer optimizationheat-work conversion optimization |
| spellingShingle | XueTao CHENG XinGang LIANG Entransy, Entransy Dissipation and Entransy Loss for Analyses of Heat Transfer and Heat-Work Conversion Processes Journal of Thermal Science and Technology entransy entransy dissipation entransy loss heat transfer optimization heat-work conversion optimization |
| title | Entransy, Entransy Dissipation and Entransy Loss for Analyses of Heat Transfer and Heat-Work Conversion Processes |
| title_full | Entransy, Entransy Dissipation and Entransy Loss for Analyses of Heat Transfer and Heat-Work Conversion Processes |
| title_fullStr | Entransy, Entransy Dissipation and Entransy Loss for Analyses of Heat Transfer and Heat-Work Conversion Processes |
| title_full_unstemmed | Entransy, Entransy Dissipation and Entransy Loss for Analyses of Heat Transfer and Heat-Work Conversion Processes |
| title_short | Entransy, Entransy Dissipation and Entransy Loss for Analyses of Heat Transfer and Heat-Work Conversion Processes |
| title_sort | entransy entransy dissipation and entransy loss for analyses of heat transfer and heat work conversion processes |
| topic | entransy entransy dissipation entransy loss heat transfer optimization heat-work conversion optimization |
| url | https://www.jstage.jst.go.jp/article/jtst/8/2/8_337/_pdf/-char/en |
| work_keys_str_mv | AT xuetaocheng entransyentransydissipationandentransylossforanalysesofheattransferandheatworkconversionprocesses AT xingangliang entransyentransydissipationandentransylossforanalysesofheattransferandheatworkconversionprocesses |