SCIENCE

Nuclear power plant steam re-heating system – exergy analysis at four different operating regimes

  • 1 Faculty of Engineering, University of Rijeka, Croatia

Abstract

In this paper is performed exergy analysis of steam re-heating system, through all of its components, which operate in nuclear power plant. Analyzed re-heating system consists of the moisture separator (MS) and two re-heaters (RH1 and RH2) and is observed in four different operating regimes. MS has significantly lower exergy destructions and significantly higher exergy efficiencies in comparison to both re-heaters, regardless of the observed operating regime. MS and both re-heaters did not achieve the lowest exergy destructions and the highest exergy efficiencies in the same operating regime which notably complicated possible improvements. Further research of presented re-heating system will be based on operation improvement of RH1 and RH2 – performed exergy analysis shows that MS operation in any operating regime leaves no room for further improvement.

Keywords

References

  1. Erdem, H.H., Akkaya, A.V., Cetin, B., Dagdas, A., Sevilgen, S.H., Sahin, B., Teke, I., Gungor, C., Atas, S.: Comparative energetic and exergetic performance analyses for coal-fired thermal power plants in Turkey, International Journal of Thermal Sciences 48, p. 2179–2186, 2009. (doi:10.1016/j.ijthermalsci.2009.03.007)
  2. Mitrović, D., Ţivković, D., Laković, M.S.: Energy and Exergy Analysis of a 348.5 MW Steam Power Plant, Energy Sources, Part A, 32, p. 1016–1027, 2010. (doi:10.1080/15567030903097012)
  3. Naserbegi, A., Aghaie, M., Minuchehr, A., Alahyarizadeh, Gh.: A novel exergy optimization of Bushehr nuclear power plant by gravitational search algorithm (GSA), Energy 148, p. 373-385, 2018. (doi:10.1016/j.energy.2018.01.119)
  4. Anđelić, N., Mrzljak, V., Lorencin, I., Baressi Šegota, S.: Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads, Pomorski zbornik, 59 (1), p. 9-34, 2020. (doi:10.18048/2020.59.01.)
  5. Mrzljak, V., Poljak, I.: Energy Analysis of Main Propulsion Steam Turbine from Conventional LNG Carrier at Three Different Loads, International Journal of Maritime Science & Technology “Our Sea” 66 (1), p. 10-18, 2019. (doi:10.17818/NM/2019/1.2)
  6. Kopac, M., Hilalci, A.: Effect of ambient temperature on the efficiency of the regenerative and reheat Catalagzi power plant in Turkey, Applied Thermal Engineering 27, p. 1377–1385, 2007. (doi:10.1016/j.applthermaleng.2006.10.029)
  7. Kostyuk, A., Frolov, V.: Steam and gas turbines, Mir Publishers, Moscow, 1988.
  8. Wang, C., Yan, C., Wang, J., Tian, C., Yu, S.: Parametric optimization of steam cycle in PWR nuclear power plant using improved genetic-simplex algorithm, Applied Thermal Engineering 125, p. 830-845, 2017. (doi:10.1016/j.applthermaleng.2017.07.045)
  9. Lemmon, E.W., Huber, M.L., McLinden, M.O.: NIST reference fluid thermodynamic and transport properties-REFPROP, version 9.0, User’s guide, Colorado, 2010.
  10. Mrzljak, V., Poljak, I., Medica-Viola, V.: Thermodynamical analysis of high pressure feed water heater in steam propulsion system during exploitation, Shipbuilding 68 (2), p. 45-61, 2017. (doi:10.21278/brod68204)
  11. Mrzljak, V., Poljak, I., Medica-Viola, V. : Efficiency and losses analysis of low-pressure feed water heater in steam propulsion system during ship maneuvering period, Scientific Journal of Maritime Research 30 (2), p. 133-140, 2016. (doi:10.31217/p.30.2.6)
  12. Kanoğlu, M., Çengel, Y.A., Dincer, I.: Efficiency Evaluation of Energy Systems, Springer Briefs in Energy, Springer, 2012. (doi:10.1007/978-1-4614-2242-6)
  13. Mrzljak, V., Poljak, I., Prpić-Oršić, J., Jelić, M.: Exergy analysis of marine waste heat recovery CO2 closed-cycle gas turbine system, Pomorstvo, 34 (2), 309-322, 2020. (doi:10.31217/p.34.2.12)
  14. Mrzljak, V., Anđelić, N., Lorencin, I., Sandi Baressi Šegota, S.: The influence of various optimization algorithms on nuclear power plant steam turbine exergy efficiency and destruction, Pomorstvo, 35 (1), p. 69-86, 2021. (doi:10.31217/p.35.1.8)
  15. Ahmadi, G. R., Toghraie, D.: Energy and exergy analysis of Montazeri Steam Power Plant in Iran, Renewable and Sustainable Energy Reviews 56, p. 454–463, 2016. (doi:10.1016/j.rser.2015.11.074)
  16. Mrzljak, V., Poljak, I., Prpić-Oršić, J.: Exergy analysis of the main propulsion steam turbine from marine propulsion plant, Brodogradnja: Teorija i praksa brodogradnje i pomorske tehnike, 70 (1), p. 59-77, 2019. (doi:10.21278/brod70105)
  17. Tan, H., Shan, S., Nie, Y., Zhao, Q.: A new boil-off gas re-liquefaction system for LNG carriers based on dual mixed refrigerant cycle, Cryogenics 92, p. 84–92, 2018. (doi:10.1016/j.cryogenics.2018.04.009)
  18. Mrzljak, V., Kudláček, J., Baressi Šegota, S., Medica-Viola, V.: Energy and Exergy Analysis of Waste Heat Recovery Closed-Cycle Gas Turbine System while Operating with Different Medium, Pomorski zbornik, 60(1), p. 21-48, 2021. (doi:10.18048/2021.60.02.)
  19. Baldi, F., Ahlgren, F., Van Nguyen, T., Thern, M., Andersson, K.: Energy and Exergy Analysis of a Cruise Ship, Energies 11, 2508, 2018. (doi:10.3390/en11102508)
  20. Mrzljak, V., Poljak, I., Medica-Viola, V.: Dual fuel consumption and efficiency of marine steam generators for the propulsion of LNG carrier, Applied Thermal Engineering 119, p. 331–346, 2017. (doi:10.1016/j.applthermaleng.2017.03.078)
  21. Mrzljak, V., Senčić, T., Ţarković, B.: Turbogenerator Steam Turbine Variation in Developed Power: Analysis of Exergy Efficiency and Exergy Destruction Change, Modelling and Simulation in Engineering, 2945325, 2018. (doi:10.1155/2018/2945325)
  22. Mrzljak, V., Poljak, I., Ţarković, B.: Exergy Analysis of Steam Pressure Reduction Valve in Marine Propulsion Plant on Conventional LNG Carrier, International Journal of Maritime Science & Technology "Our Sea" 65 (1), p. 24-31, 2018. (doi:10.17818/NM/2018/1.4)

Article full text

Download PDF