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Thermal Performance Improvement of Derna Electric Power Station (unit5) Using Solar Energy

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  • Yasser Aldali
  • K. Morad

Abstract

The use of fossil fuels should be reduced in near future due to their limited resources and increasing ecological impacts. Therefore, increased interest and incentives have been created for developing electricity supply utilizing renewable energy such as solar energy, which has long-range potential and is applicable in most geographical regions. The objective of this paper is to perform thermodynamic and economic analysis of the proposed integrated solar Derna steam turbine power plant (unit 5) based on the parabolic trough system. Two modes of operation are considered- power boosting mode in which solar energy is used to preheat the feed water in the low and high-pressure preheaters and fuel saving mode in which a fraction of saturated steam is generated by the solar collector field. A simulation mathematical model has been developed for each component of the plant. Also different thermodynamic performance parameters at all points of the plant are considered in the calculations. This study shows that the maximum increasing of overall efficiency of the integrated solar steam power plant (ISSPP) are 5.9% for fuel saving mode and 3.2% for power boosting mode for 21st July at 12-00 with DNI 810 W/m2. During 25 years operating period of solar field, the fuel saving mode saves approximately 121 million $ and reduces about 125,000 ton in fuel consumption and approximately 390,000 ton in CO2 emissions while the augmentations of electrical energy for the power boosting mode are about 360,879 MWh. The study also shows that the paybacks of the solar field cost for the power boosting and fuel saving modes of operation are approximately 15.7 and 11.5 years, respectively.

Suggested Citation

  • Yasser Aldali & K. Morad, 2013. "Thermal Performance Improvement of Derna Electric Power Station (unit5) Using Solar Energy," Journal of Sustainable Development, Canadian Center of Science and Education, vol. 7(1), pages 1-60, December.
    • Handle: RePEc:ibn:jsd123:v:7:y:2013:i:1:p:60
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    References listed on IDEAS

    as
    1. Hosseini, R. & Soltani, M. & Valizadeh, G., 2005. "Technical and economic assessment of the integrated solar combined cycle power plants in Iran," Renewable Energy, Elsevier, vol. 30(10), pages 1541-1555.
    2. Zarza, Eduardo & Valenzuela, Loreto & León, Javier & Hennecke, Klaus & Eck, Markus & Weyers, H.-Dieter & Eickhoff, Martin, 2004. "Direct steam generation in parabolic troughs: Final results and conclusions of the DISS project," Energy, Elsevier, vol. 29(5), pages 635-644.
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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