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Exergy analysis and investigation for various feed water heaters of direct steam generation solar–thermal power plant

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  • Gupta, M.K.
  • Kaushik, S.C.

Abstract

The energy and exergy analysis has been carried out for the different components of a proposed conceptual direct steam generation (DSG) solar–thermal power plant (STPP). It has been found that the maximum energy loss is in the condenser followed by solar collector field. The maximum exergy loss is in the solar collector field while in other plant components it is small. The possibilities to further improve the plant efficiency are identified and exploited. For minimum exergy loss in receiver the inlet temperature of water to the receiver, which is governed by the number of feed water heaters (FWHs), bleed pressure and mass fraction of bleed steam, must be optimum. The only one FWH has been proposed in conceptual DSG STPP. In order to evaluate the optimum bleed pressure and mass fraction of bleed steam to maximize the STPP efficiency, the investigations are carried out for various bleed pressure and mass fractions of bleed steam of proposed conceptual DSG STPP having one FWH. The investigations for bleed pressure and mass fraction of bleed steam are also carried out by incorporating two and three FWHs. It has been found that there will be significant improvement in efficiency by using three FWHs and further gain in efficiency is possible by making provision for more FWHs.

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  • Gupta, M.K. & Kaushik, S.C., 2010. "Exergy analysis and investigation for various feed water heaters of direct steam generation solar–thermal power plant," Renewable Energy, Elsevier, vol. 35(6), pages 1228-1235.
    • Handle: RePEc:eee:renene:v:35:y:2010:i:6:p:1228-1235
    DOI: 10.1016/j.renene.2009.09.007
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    References listed on IDEAS

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    7. Gupta, M.K. & Kaushik, S.C. & Ranjan, K.R. & Panwar, N.L. & Reddy, V. Siva & Tyagi, S.K., 2015. "Thermodynamic performance evaluation of solar and other thermal power generation systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 567-582.
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    10. Giglio, Andrea & Lanzini, Andrea & Leone, Pierluigi & Rodríguez García, Margarita M. & Zarza Moya, Eduardo, 2017. "Direct steam generation in parabolic-trough collectors: A review about the technology and a thermo-economic analysis of a hybrid system," Renewable and Sustainable Energy Reviews, Elsevier, vol. 74(C), pages 453-473.
    11. Blanco-Marigorta, Ana M. & Victoria Sanchez-Henríquez, M. & Peña-Quintana, Juan A., 2011. "Exergetic comparison of two different cooling technologies for the power cycle of a thermal power plant," Energy, Elsevier, vol. 36(4), pages 1966-1972.
    12. Wang, Xinzhi & He, Yurong & Liu, Xing & Cheng, Gong & Zhu, Jiaqi, 2017. "Solar steam generation through bio-inspired interface heating of broadband-absorbing plasmonic membranes," Applied Energy, Elsevier, vol. 195(C), pages 414-425.
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    14. Ahmadi, Gholamreza & Toghraie, Davood & Akbari, Omid Ali, 2017. "Solar parallel feed water heating repowering of a steam power plant: A case study in Iran," Renewable and Sustainable Energy Reviews, Elsevier, vol. 77(C), pages 474-485.
    15. Gakkhar, Nikhil & Soni, M.S. & Jakhar, Sanjeev, 2016. "Second law thermodynamic study of solar assisted distillation system: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 56(C), pages 519-535.
    16. Hossain, M.S. & Saidur, R. & Fayaz, H. & Rahim, N.A. & Islam, M.R. & Ahamed, J.U. & Rahman, M.M., 2011. "Review on solar water heater collector and thermal energy performance of circulating pipe," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(8), pages 3801-3812.
    17. Reddy, V. Siva & Kaushik, S.C. & Tyagi, S.K., 2012. "Exergetic analysis and performance evaluation of parabolic trough concentrating solar thermal power plant (PTCSTPP)," Energy, Elsevier, vol. 39(1), pages 258-273.

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