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Exergoeconomic analysis of a FBCC steam power plant

ABSTRACT
In this study, extensive exergoeconomic analysis is performed for a 6.5 MW steam power plant using the data obtained from running system. The role and impact of the each system component on the first and second law efficiencies are analyzed to understand the individual performance of sub-components. Moreover, the quantitative exergy cost balance for each component is considered to point out the exergoeconomic performance. The analysis shows that the largest irreversibility occurs in the fluidized-bed coal combustor, about 93% of the overall system irreversibility. Furthermore, it is followed by heat recovery steam generator and economizer with 3% and 1%, respectively. In this study, the capital investment cost, operating and maintenance costs and total cost of fluidized-bed coal combustor steam plant are calculated as 6.30, 5.35 and 11.65 US$/h, respectively. The unit exergy cost and fuel exergy cost, which enter the fluidized-bed coal combustor steam plant, are found as 3.33 US$/GJ and 112.44 US$/h, respectively. The unit exergy cost and exergy cost of the steam which is produced in heat recovery steam generator are calculated as 16.59 US$/GJ and 91.87 US$/h, respectively. This study emphasizes the importance of the exergoeconomic analysis based on the results obtained from the exergy analysis.
KEYWORDS
PAPER SUBMITTED: 2015-12-10
PAPER REVISED: 2016-02-01
PAPER ACCEPTED: 2016-02-05
PUBLISHED ONLINE: 2016-03-12
DOI REFERENCE: https://doi.org/10.2298/TSCI151210056T
REFERENCES
  1. Kaushik S.C., et al., Energy and exergy analyses of thermal power plants: A review, Renew Sustain 236 Energy Rev., 15 (2011), pp. 1857-1872
  2. Bejan A., et al., Thermal design & optimization. A Wiley-Interscience Publication, United States of 238 America, 1996.
  3. Kotas T.J., The exergy method of thermal plant analysis. London: Krieger Publishing Company, 240 Great Britain, 1995.
  4. Dincer I., Rosen M.A., Exergy, energy, environment and sustainable development. Elsevier, Great 242 Britain, 2007
  5. Tumen Ozdil N.F., et al., Thermodynamic analysis of an Organic Rankine Cycle (ORC) based on 244 industrial data, Appl Therm Eng 91 (2015), pp. 43-52
  6. Eskin N., et al., Thermodynamic analysis of a FBCC steam power plant, Energy Convers Manage., 246 50 (2009), pp. 2428-2438
  7. Lian ZT., et al., A thermoeconomic analysis of biomass energy for trigeneration, Appl Energy, 87 248 (2010), pp. 84-95
  8. Aljundi I., Energy and exergy analysis of a steam power plant in Jordan, Appl Therm Eng., 29 250 (2009), pp. 324-328.
  9. Ozdemir K., et al., Exergoeconomic analysis of a fluidized-bed coal combustor (FBCC) steam 252 power plant, Appl Therm Eng., 30 (2010), pp. 1621-1631.
  10. Lazzaretto A., Tsatsaronis G., SPECO: A systematic and general methodology for calculating 254 efficiencies and costs in thermal systems, Energy, 31 (2006), pp. 1257-1289.
  11. Gyul'maliev A.M. and Shpirt M. Ya., Calculation of the Enthalpy of Formation of Coal Organic 256 Matter, Solid Fuel Chemistry, 42 (2008), pp. 263-267
  12. Ballice L., Classification of volatile products evolved from temperature-programmed pyrolysis of 258 Soma-Lignite and ┼×─▒rnak-Asphaltite from Turkey, Journal of Analytical and Applied Pyrolysis, 63 259 (2002), pp. 267-281