Abstract
This paper addresses overall performance analysis of coal-fired power unit. From the point of view of system engineering, a general steam-water distribution equation of the thermal plant system is presented. This system state equation is an exact expression combining system topological structure and system properties. Through proper mathematic transform, the inner relationship and interaction between the main system and auxiliary system are revealed and its general form is given. An analytical formula for the heat consumption rate of thermal power plant is one direct fruit of the equation, which greatly facilitate the online analyzing and optimizing of complex thermal system. The new approach, with the aid of modern data acquiring technology, is a perfect extension of the traditional analysis method based on the First Law of Thermodynamics.
Similar content being viewed by others
References
Wanchao Lin. Energy Conservation Theory for Thermal Power Plant. Xi’an Jiaotong University Press, Xian, 1994.
FangLi Ma. Analysis Theory of Energy Conservation for Power Plant. Hydraulic and Electric Power Press, Beijing, 1992.
Valero A, Correas L, Serra L. On-line thermoeconomic diagnosis of thermal power plants. In: Bejan A, Mamut E, editors. NATO ASI on thermodynamics and optimization of complex energy systems. Kluwer Academic Publishers; New York, 1999. p. 117–136.
G. Prasad, et al., “A novel performance monitoring strategy for economical thermal power plant operation”, IEEE Transactions on Energy Conversion, vol. 14, pp. 802–809, 1999.
Chunfa Zhang, Shunlin Yan, Hansong Fan, et al. “A steam-water distribution matrix equation of the whole thermal system for coal-fired power plant and its general construction regulation” in Proc. 1999 Joint Power Generation Conference, Butlingame, California. Volume 2, PWR-Vol.34, pp. 497–503.
Chunfa Zhang, Liping Li, Mingzhi Zhang, et al.. “Steam-Water distribution standard equation of themal system for coal-fired power plant” in Proc.2003 International Conference on Power Engineering (ICOPE-2003), Kobe, Japan.
Chunfa Zhang, Yinghong Cui, Wenbing Yang et al..Proof for part of the Stodola ellipse flow experimental conclusion and the improvement of Flűgel formula. Science in China, series E, Vol. 45, No. 1, 2002, pp. 35–46
Yunus A. Çengel, Michael A Bolcs. Thermodynamics: An Engineering Approach (4th Edition). McGraw-Hill, New York, 2002
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zhang, C., Li, L., Wang, H. et al. A modern method for analyzing thermal energy system with system state equation and analytical formula of performance index. J. of Therm. Sci. 16, 90–96 (2007). https://doi.org/10.1007/s11630-007-0090-6
Received:
Issue Date:
DOI: https://doi.org/10.1007/s11630-007-0090-6