Output power analyses for the thermodynamic cycles of thermal power plants

doi:10.1088/1674-1056/23/5/050513

Abstract Thermal power plant is one of the important thermodynamic devices, which is very common in all kinds of power generation systems. In this paper, we use a new concept, entransy loss, as well as exergy destruction, to analyze the single reheating Rankine cycle unit and the single stage steam extraction regenerative Rankine cycle unit in power plants. This is the first time that the concept of entransy loss is applied to the analysis of the power plant Rankine cycles with reheating and steam extraction regeneration. In order to obtain the maximum output power, the operating conditions under variant vapor mass flow rates are optimized numerically, as well as the combustion temperatures and the off-design flow rates of the flue gas. The relationship between the output power and the exergy destruction rate and that between the output power and the entransy loss rate are discussed. It is found that both the minimum exergy destruction rate and the maximum entransy loss rate lead to the maximum output power when the combustion temperature and heat capacity flow rate of the flue gas are prescribed. Unlike the minimum exergy destruction rate, the maximum entransy loss rate is related to the maximum output power when the highest temperature and heat capacity flow rate of the flue gas are not prescribed.

Keywords: thermal power plants Rankine circle exergy destruction entransy loss

Received: 31 July 2013
Revised: 03 November 2013
Accepted manuscript online:

PACS:

05.70.-a

(Thermodynamics)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 51376101).

Corresponding Authors: Liang Xin-Gang
E-mail: liangxg@tsinghua.edu.cn

About author: 05.70.-a

Cite this article:

Sun Chen (孙晨), Cheng Xue-Tao (程雪涛), Liang Xin-Gang (梁新刚) Output power analyses for the thermodynamic cycles of thermal power plants 2014 Chin. Phys. B 23 050513

[1]	Nag P K 2002 Power Plant Engineering (2nd Edn.) (New Delhi: McGraw-Hill)
[2]	Vundela S R, Subhash C K, Sudhir K T and Naraya L P 2010 Smart Grid and Renewable Energy 1 143
[3]	Ibrahim D and Husain A 2001 Int. J. Energ. Res. 25 727
[4]	Habib M A and Zubair S M 1992 Energy 3 295
[5]	Bo L, Philippe R, Christophe C, Renaud G and Franck D 2012 Appl. Energ. 100 285
[6]	Chen L G, Wu C and Sun F R 1999 J. Non-Equilibrium Thermodynamics 24 327
[7]	Chen L G and Sun F R 2004 Advances in Finite Time Thermodynamics: Analysis and Optimization (New York: Nova Science Publishers)
[8]	Chen L G, Li J and Sun F R 2008 Appl. Energ. 85 52
[9]	Chen L G, Feng H J and Sun F R 2013 J. Energ. Institute 86 97
[10]	Kaushik S C, Reddy V S and Tyagi S K 2011 Renew. Sust. Energ. Rev. 15 1857
[11]	Li Q D and Liu Z Z 2008 Thermal Economy Calculation and Analysis of Thermal Power Plant (Beijing: China Electric Power Press) (in Chinese)
[12]	Moran M J and Shapiro H N 2010 Fundamentals of Engineering Thermodynamics (6th Edn.) (New York: John Wiley & Sons)
[13]	Adavbiele A S 2010 Int. J. Eng. Res. Africa 1 67
[14]	Li P, Gong M Q and Wu J F 2008 J. Appl. Phys. 104 103536
[15]	Myat A, Thu K and Kim Y D 2011 Appl. Therm. Energ. 31 2405
[16]	Cheng X T and Liang X G 2013 Chin. Phys. B 22 010508
[17]	Bejan A 1997 Advanced Engineering Thermodynamics (New York: John Wiley & Sons)
[18]	Salamon P, Hoffmann K H, Schubert S, Berry R S and Andresen B 2001 J. Non-Equilib. Thermodyn. 26 73
[19]	Klein S A and Reindl D T 1998 J. Energ. Res. 120 172
[20]	Cheng X T, Wang W H and Liang X G 2012 Chin. Sci. Bull. 57 2934
[21]	Sengupta S, Datta A and Duttagupta S 2007 Int. J. Eng. Res. 31 14
[22]	Naterer G F, Regulagadda P and Dincer I 2010 Appl. Therm. Energ. 30 970
[23]	Habib M A, Said S A M and Al-Zaharna I 1999 Appl. Energ. 63 17
[24]	Acar H I 1997 Energ. Convers. Manage 38 647
[25]	Khaliq A and Kaushik S C 2002 Appl. Eng. 78 179
[26]	Guo Z Y, Zhu H Y and Liang X G 2007 Int. J. Heat Mass Tran. 50 2545
[27]	Chen L G 2012 Chin. Sci. Bull. 57 4404
[28]	Feng H J, Chen L G and Sun F G 2012 Sci. China: Tech. Sci. 55 779
[29]	Feng H J, Chen L G, Xie Z H and Sun F R 2013 Sci. China: Tech. Sci. 56 299
[30]	Cheng X T and Liang X G 2012 Energy 41 964
[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 Energ. Convers. Manage. 68 82
[35]	Zhou B, Cheng X T and Liang X G 2013 J. Appl. Phys. 113 124904
[36]	Holman J P 2001 Heat Transfer (8th Edn.) (New York: McGraw-Hill)
[37]	Wagner W and Kruse A 1998 Properties of Water and Steam: the Industrial Standard IAPWS-IF97 for the Thermodynamic Properties and Supplementary Equations for Other Properties: Tables Based on These Equations (Berlin, New York: Springer-Verlag)
[38]	Cheng X T and Liang X G 2013 Energ. Convers. Manage. 73 121
[39]	Lin Z H and Xu T M 2009 Practical Boiler Manual (2nd Edn.) (Beijing: Chemical Industry Press) (in Chinese)
[40]	Zhang W G, Ye X M and Wu R T 2012 Power System Engineering 28 59

[1]	Output power analyses of an endoreversible Carnot heat engine with irreversible heat transfer processes based on generalized heat transfer law Wu Yan-Qiu (吴艳秋). Chin. Phys. B, 2015, 24(7): 070506.
[2]	Entransy analyses of heat-work conversion systems with inner irreversible thermodynamic cycles Cheng Xue-Tao (程雪涛), Liang Xin-Gang (梁新刚). Chin. Phys. B, 2015, 24(12): 120503.
[3]	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). Chin. Phys. B, 2013, 22(11): 110506.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Output power analyses for the thermodynamic cycles of thermal power plants

Cite this article:

Online attention