Thermodynamic Assessment and Parametric Study of a Supercritical Thermal Power Plant

Document Type : Research Paper

Author

Faculty of Engineering, Alzahra University, Tehran, Iran

Abstract

A thermodynamic analysis of an operational 315 MW supercritical steam power plant (SPP) using the actual data is performed to assess the plant performance and identify the sites of energy losses and exergy destructions in each component of the plant. Various performance parameters such as component energy and exergy efficiencies, energy loss rate, exergy destruction rate, improvement potential (IP) rate and different plant efficiencies based on first and second thermodynamic laws were calculated and compared. Also, a parametric study is performed to investigate the effects of various turbine system operating conditions such as high pressure turbine (HPT) inlet pressure, HPT inlet temperature, intermediate pressure turbine (IPT) inlet pressure, HPT inlet temperature, and IPT inlet mass flow rate on plant efficiencies and exergy destruction of plant components.

Keywords

Main Subjects


 
[1] MAPNA Company, Report, Tehran, Iran, (2008).
 
[2] Kotas, T., "The Exergy Method of Thermal Plant Analysis", London Boston Butterworths, London, (1985).
[3] Bejan, A., Tsatsaronis, G., and Moran, M., "Thermal Design and Optimization", Wiley, New York, (1996).
[4] Szargut, J., Morris, D.R., and Steward, F.R., "Exergy Analysis of Thermal, Chemical, and Metallurgical Processes", Hemisphere, New York, (1988).
 
[5] Rosen, M., and Dincer, I., "Exergy as the Confluence of Energy, Environment and Sustainable Development", Exergy International Journal, Vol. 1, No. 1, pp.1–11, (2001).
 
[6] Dincer, I., and Cengel, Y.A., "Energy, Entropy and Exergy Concepts and their Roles in Thermal Engineering", Entropy, Vol. 3, No. 3, pp.116–149, (2001).
 
[7] Zubair, S.M., and Habib, M.A., "Second-law-based Thermodynamic Analysis of Regenerative-reheat Rankine-cycle Power Plants", Energy, Vol. 17, pp. 295–301, (1992).
 
[8] Dincer, I., and Al-Muslim, H., "Thermodynamic Analysis of Reheat Cycle Steam Power Plant", International Journal of Energy Research, Vol. 25, pp. 727–739, (2001).
 
[9] Verkhivker, G., and Kosoy, B., "On the Exergy Analysis of Power Plants", Energy Conversion and Management, Vol. 42, pp. 2053–2059, (2001).
 
[10] Rosen, M.A., "Energy and Exergy-based Comparison of Coal-fired and Nuclear Steam Power Plants", International Journal of Exergy, Vol. 3, pp.180–192, (2001).
 
[11] Suresh, M.V.J.J., Reddy, K.S., and Ajit, K.K., "Energy and Exergy Analysis of Thermal Power Plants Based on Advanced Steam Parameters", International Conference on Advances in Energy Research, India, (2006).
 
[12] Datta, A., Sengupta S., and Duttagupta S., "Exergy Analysis of a Coal-based 210MW Thermal Power Plant", International Journal of Energy Research, Vol. 31, pp. 14–28, (2007).
 
[13] Reddy, B.V., and Butcher, C.J., "Second Law Analysis of a Waste Heat Recovery Based Power Generation System", International Journal of Heat and Mass Transfer, Vol. 50, pp. 2355–2363, (2007).
 
[14] Hasan, H.E., Ali, V.A., Burhanettin, A. D., Suleyman, H.S., Bahri, S., Ismail, T., Cengiz, G., and Selcuk, A., "Comparative Energetic and Exergetic Performance Analyses for Coal-fired Thermal Power Plants in Turkey", International Journal of Thermal Sciences, Vol. 48, pp. 2179–2186, (2009).
 
[15] Ganapathy, T., Alagumurthi, N., Gakkhar, R.P., and Murugesan, K., "Exergy Analysis of Operating Lignite Fired Thermal Power Plant", Journal of Engineering Science and Technology Review, Vol. 2, pp. 123–130, (2009).
 
[16] Aljundi Islam, H., "Energy and Exergy Analysis of a Steam Power Plant in Jordan", Applied Thermal Engineering, Vol. 29, pp. 324–328, (2009).
 
[17] Oktay, Z., "Investigation of Coal-fired Power Plants in Turkey and a Case Study: Can Plant", Applied Thermal Engineering, Vol. 29, pp.550–557, (2009).
 
[18] Naterer, G.F., Regulagadda, P., and Dincer, I., "Exergy Analysis of a Thermal Power Plant with Measured Boiler and Turbine Losses", Applied Thermal Engineering, Vol. 30, pp. 970–976, (2010).
 
[19] Kaushik, S.C., Siva Reddy, V., and Tyagi, S.K., "Energy and Exergy Analyses of Thermal Power Plants: A Review", Renewable and Sustainable Energy Reviews, Vol. 15, pp. 1857–1872, (2011).
 
[20] Hajidavalloo, E., and Vosough, A., "Energy and Exergy Analyses of a Supercritical Power Plant", Int. J. Exergy, Vol. 9, No. 4, pp. 435-452, (2011).
 
[21] Kanoglu, M., Cengel, Y. A., and Dincer, I., "Efficiency Evaluation of Energy Systems", Springer, New York, (2012).
 
[22] Van Gool, W., "Energy Policy: Fairly Tales and Factualities", in Oares, O.D.D.,     Martins da Cruz, A., Costa Pereira, G., Soares, I.M.R.T. and Reis, A.J.P.S. (Eds.): Innovation and Technology-Strategies and Policies, Kluwer, Dordrecht, pp. 93–105 (1997).