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Comparative exergoeconomic analysis of basic and reheat gas turbine with air film blade cooling

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  • Sahu, Mithilesh Kumar
  • Sanjay,

Abstract

In power plant industry, it is always desirable that the performance of the plant should be as high as possible with the lowest possible investment. In this regard exergoeconomic analysis is a tool which combines thermodynamic analysis and economic principles to provide information that is helpful to predict thermodynamic performance and total cost of the plant. In this work an exergoeconomic approach is applied to the gas turbine based power plant cycles. In present work comparative exergoeconomic analysis of basic and reheat air-film blade cooled gas turbine cycles have been performed with exergy analysis as the basis. Average cost theory of exergoeconomic analysis has been carried out, in order to estimate the thermodynamic performance, thermoeconomics and electricity cost for power utility based on the cycle. Present work also represents the behavior of key parameters with cycle operating parameters (compressor pressure ratio and turbine inlet temperature) of proposed cycle. The comparative analysis result for base case (TIT = 1500 K, rpc = 26, ηAC=88%, ηGT=90%) being total cost rate = 20.172 $/h and 29.156 $/h, plant specific work = 422.49 kJ/kg and 576.40 kJ/kg and cost of electricity = 3.31 cents/kWh and 3.45 cents/kWh for basic and reheat gas turbine cycle based power utility respectively.

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  • Sahu, Mithilesh Kumar & Sanjay,, 2017. "Comparative exergoeconomic analysis of basic and reheat gas turbine with air film blade cooling," Energy, Elsevier, vol. 132(C), pages 160-170.
    • Handle: RePEc:eee:energy:v:132:y:2017:i:c:p:160-170
    DOI: 10.1016/j.energy.2017.05.025
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    References listed on IDEAS

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    1. Sahu, Mithilesh Kumar & Sanjay,, 2017. "Thermoeconomic investigation of power utilities: Intercooled recuperated gas turbine cycle featuring cooled turbine blades," Energy, Elsevier, vol. 138(C), pages 490-499.
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    6. Amiri Rad, Ehsan & Kazemiani-Najafabadi, Parisa, 2017. "Thermo-environmental and economic analyses of an integrated heat recovery steam-injected gas turbine," Energy, Elsevier, vol. 141(C), pages 1940-1954.
    7. Moon, Seong Won & Kwon, Hyun Min & Kim, Tong Seop & Kang, Do Won & Sohn, Jeong Lak, 2018. "A novel coolant cooling method for enhancing the performance of the gas turbine combined cycle," Energy, Elsevier, vol. 160(C), pages 625-634.
    8. Mossi Idrissa, A.K. & Goni Boulama, K., 2019. "Advanced exergy analysis of a combined Brayton/Brayton power cycle," Energy, Elsevier, vol. 166(C), pages 724-737.

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