|
|
Analyses of the endoreversible Carnot cycle with entropy theory and entransy theory |
Wang Wen-Hua (王文华), Cheng Xue-Tao (程雪涛), Liang Xin-Gang (梁新刚) |
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, School of Aerospace, Tsinghua University, Beijing 100084, China |
|
|
Abstract The endoreversible Carnot cycle is analyzed based on the concepts of entropy generation, entropy generation number, entransy loss, and entransy loss coefficient. The relationships of the cycle output power and heat-work conversion efficiency with these parameters are discussed. For the numerical examples discussed, the preconditions of the application for these concepts are derived. When the inlet temperatures and heat capacity flow rates of hot streams and environment temperature are prescribed, the results show that the concepts of entropy generation and entransy loss are applicable. However, in the presence of various inlet temperatures of streams, larger entransy loss rate still leads to larger output power, while smaller entropy generation rate does not. When the heat capacity flow rates of hot streams are various, neither larger entransy loss rate nor smaller entropy generation rate always leads to larger output power. Larger entransy loss coefficient always leads to larger heat-work conversion efficiency for the cases discussed, while smaller entropy generation number does not always.
|
Received: 01 April 2013
Revised: 21 May 2013
Accepted manuscript online:
|
PACS:
|
05.70.Ln
|
(Nonequilibrium and irreversible thermodynamics)
|
|
07.20.Pe
|
(Heat engines; heat pumps; heat pipes)
|
|
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 51376101) and the Initiative Scientific Research Program of Tsinghua University, China. |
Corresponding Authors:
Cheng Xue-Tao
E-mail: chengxt06@mails.tsinghua.edu.cn, chengxt02@gmail.com
|
Cite this article:
Wang Wen-Hua (王文华), Cheng Xue-Tao (程雪涛), Liang Xin-Gang (梁新刚) Analyses of the endoreversible Carnot cycle with entropy theory and entransy theory 2013 Chin. Phys. B 22 110506
|
[1] |
Zhang Z J, Zeng Y H and Kusiak A 2012 Energy 47 505
|
[2] |
Tu Z C 2012 Chin. Phys. B 21 020513
|
[3] |
Frank E D, Sullivan J L and Wang M Q 2012 Environ. Res. Lett. 7 034030
|
[4] |
Wang X W, Cai G B and Gao Y S 2011 Chin. Phys. B 20 064701
|
[5] |
Wang H and Wu G X 2012 Chin. Phys. B 21 010505
|
[6] |
Grazzini G and Gori F 1988 Int. J. Heat Mass Transfer 31 2547
|
[7] |
Johannessen E, Nummedal L and Kjelstrup S 2002 Int. J. Heat Mass Transfer 45 2649
|
[8] |
Shah R K and Skiepko T 2004 J. Heat Transfer ASME 126 994
|
[9] |
Guo Z Y, Zhu H Y and Liang X G 2007 Int. J. Heat Mass Transfer 50 2545
|
[10] |
Chen L G, Wei S H and Sun F R 2008 J. Phys. D: Appl. Phys. 41 195506
|
[11] |
Xie Z H, Chen L G and Sun F R 2009 Sci. China Ser. E 52 3413
|
[12] |
Xiao Q H, Chen L G and Sun F R 2011 Chin. Sci. Bull. 56 102
|
[13] |
Chen L G, Xiao Q H, Xie Z H and Sun F R 2012 Int. Commun. Heat Mass Trans. 39 1556
|
[14] |
Feng H J, Chen L G, Xie Z H and Sun F R 2012 Sci. China Tech. Sci. 55 3322
|
[15] |
Feng H J, Chen L G and Sun F R 2012 Sci. China Tech. Sci. 55 515
|
[16] |
Feng H J, Chen L G, Xie Z H and Sun F R 2013 Sci. China Tech. Sci. 56 299
|
[17] |
Chen Q and Ren J X 2008 Chin. Sci. Bull. 53 3753
|
[18] |
Yuan F and Chen Q 2011 Energy 36 5476
|
[19] |
Cheng X T and Liang X G 2011 Int. J. Heat Mass Transfer 54 269
|
[20] |
Cheng X T, Xu X H and Liang X G 2011 Sci. China Tech. Sci. 54 2446
|
[21] |
Guo Z Y, Liu X B, Tao W Q and Shah R K 2010 Int. J. Heat Mass Transfer 53 2877
|
[22] |
Qian X D and Li Z X 2011 Int. J. Thermal. Sci. 50 608
|
[23] |
Xia S J, Chen L G and Sun F R 2009 Chin. Sci. Bull. 54 3587
|
[24] |
Cheng X T, Xu X H and Liang X G 2011 Sci. China Tech. Sci. 54 964
|
[25] |
Wang W H, Cheng X T and Liang X G 2013 Sci. China Tech. Sci. 56 529
|
[26] |
Zeng D L, Ao Y, Zhang X M and Liu C 2002 Engineering Thermodynamics (Beijing: High Education Press) (in Chinese)
|
[27] |
Myat A, Thu K and Kim Y D 2011 Appl. Therm. Eng. 31 2405
|
[28] |
Klein S A and Reindl D T 1998 J. Energy Resour. Technol. 120 172
|
[29] |
Cheng X T, Wang W H and Liang X G 2012 Chin. Sci. Bull. 57 2934
|
[30] |
Cheng X T and Liang X G 2012 Energy 44 964
|
[31] |
Cheng X T and Liang X G 2012 Energy 47 421
|
[32] |
Cheng X T, Wang W H and Liang X G 2012 Sci. China Tech. Sci. 55 2847
|
[33] |
Zhou B, Cheng X T and Liang X G 2013 Sci. China Tech. Sci. 56 228
|
[34] |
Wang W H, Cheng X T and Liang X G 2013 Energy Convers. Manage. 68 82
|
[35] |
Zhou B, Cheng X T and Liang X G 2013 J. Appl. Phys. 113 124904
|
[36] |
Cheng X T and Liang X G 2013 J. Thermal Sci. Tech. 8 337
|
[37] |
Cheng X T, Chen Q, Hu G J and Liang X G 2013 Int. J. Heat Mass Transfer 60 180
|
[38] |
Bejan A 1997 Advanced Engineering Thermodynamics (2nd edn.) (New York: John Wiley & Sons)
|
[39] |
Bejan A 1996 J. Appl. Phys. 79 1191
|
[40] |
Chen L G, Wu C and Sun F R 2005 J. Non-Equilibrium Thermodynamics 24 327
|
[41] |
Wu C, Chen L G and Chen J C 1999 Recent Advances in Finite Time Thermodynamics (New York: Nova Science Publishers)
|
[42] |
Chen L G and Sun F R 2004 Advances in Finite Time Thermodynamics: Analysis and Optimization (New York: Nova Science Publishers)
|
[43] |
Chen L G, Ma K, Ge Y L and Sun F R 2013 Arab J. Sci. Eng. 38 341
|
[44] |
Chen L G 2012 Chin. Sci. Bull. 57 4404
|
[45] |
Li J, Chen L G and Sun F R 2008 Appl. Energy 85 96
|
[46] |
Qin X Y, Chen L G, Sun F R and Wu C 2005 Appl. Energy 81 365
|
[47] |
Wu C, Chen L G and Sun F R 1998 Energy Convers. Manage. 39 579
|
[48] |
Curzon F L and Ahlborn B 1975 Am. J. Phys. 43 22
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|