THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

EXERGY DIAGNOSIS OF COAL FIRED CHP PLANT WITH APPLICATION OF NEURAL AND REGRESSION MODELLING

ABSTRACT
Mathematical models of the processes, that proceed in energetic machines and devices, in many cases are very complicated. In such cases, the exact analytical models should be equipped with the auxiliary empirical models that describe those parameters which are difficult to model in a theoretical way. Regression or neural models identified basing on measurements are rather simple and are characterized by relatively short computation time. For this reason they can be effectively applied for simulation and optimization of steering and regulation processes, as well as, for control and thermal diagnosis of operation (eq. power plants or CHP plants). In the paper regression and neural models of thermal processes developed for systems of operation control of thermal plants are presented. Theoretical-empirical model of processes proceeding in coal fired CHP plant have been applied. Simulative calculations basing on these models have been carried out. Results of simulative calculations have been used for the exergetic evaluation of considered power plant. The diagnosis procedure let to investigate the formation of exergy costs in interconnected components of the system of CHP, as well as, investigate the influence of defects in operation of components on exergy losses and on the exergetic cost in other components. [Acknowledgment. The paper has been prepared within the RECENT project (REsearch Center for Energy and New Technologies) supported by 7th Framework Programme, Theme 4, Capacities.]
KEYWORDS
PAPER SUBMITTED: 2012-05-09
PAPER REVISED: 2012-06-10
PAPER ACCEPTED: 2012-07-13
DOI REFERENCE: https://doi.org/10.2298/TSCI120509133S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2012, VOLUME 16, ISSUE Issue 3, PAGES [773 - 787]
REFERENCES
  1. Rusinowski H., Szapajko G., Stanek W., Hybrid model of the conventional power unit, Mechanics Vol. 27 (2008) No. 3, 120-130.
  2. Uson S. Comparative analysis of causal diagnosis methods of malfunctions in power cycles. PhD Thesis, University of Zaragoza, Spain, January, 2008.
  3. Valero A, Torres C, Serra L, Lozano MA. 1992. A general theory of thermoeconomics, Part I: Structural analysis, Part II: The relative free energy function. Proceedings of ECOS'92, Zaragoza, Spain.
  4. Valero A, Torres C. 2006b. Application of thermoeconomics to operation diagnosis of energy plants. EOLSS Publishers, Oxford UK, 2006, www.eolss.net
  5. Rusinowski H., Stanek W., Hybrid model of steam boiler. Energy, Vol.2, Feb. 2010
  6. Stanek W., Rusinowski H., Application of empirical modelling for construction of auxiliary models of steam boiler, Archives of Thermodynamics Vol. 29 (2008), No. 4, 165-176.
  7. Szargut J., Exergy, Calculation and application guide, Silesian University of Technology Press, Gliwice 2007 (in Polish).
  8. Szargut J., Exergy metod - Technical and ecological applications, WIT-Press 2005.
  9. Lozano MA, Valero A. 1993b, Theory of the Exergetic Cost. Energy, Vol. 18, No. 9, pp 939-960.
  10. Valero A, Lozano MA, Munoz M.: A general theory of exergy savings. I. On the exergetic cost. Computer Aided Engineering and Energy Systems, AES-Vol 2-3, 1986.
  11. Valero A. 2006a. The thermodynamic process of cost formation. Encyclopedia of Life Support systems, EOLSS Publishers, Oxford UK, www.eolss.net.
  12. Valero A, Torres C., 2006a, Thermoeconomic Analysis, EOLSS Publishers, Oxford UK, 2006, www.eolss.net.
  13. Szargut J., Effect of the irreversibility of the thermal process components on CO2 emissions. Energetyka, November 2007 (in Polish).
  14. Szargut J., Stanek W., Influence of the pro-ecological tax on the market prices of fuels and electricity, Energy, the Intern. Journal, 33 (2008), 137-143.
  15. Deutsche Norm DIN 1942 Acceptance testing of steam generators. Edition 02/1994
  16. Stanek W., Budnik M.: Exergetic cost of steam power plant operation, Archives of Thermodynamics. Vol. 32 (2011), No. 2.

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence