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Thermodynamic and economic comparative analysis of air and steam bottoming cycle

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  • Chmielniak, T.
  • Czaja, D.
  • Lepszy, S.
  • Stępczyńska-Drygas, K.

Abstract

Article presents a comparative thermodynamic and economic analysis of air and steam bottoming cycle of a gas turbine. In order to make the comparison between air and steam bottoming cycle, identical gas turbines were selected. A decision was made to use gas turbine sets with a power output capacity included in the range of 5–25 MW. Considering that the air bottoming cycle agent is characterized by a low heat capacity, the systems under analysis have a better chance of competing with steam bottoming cycle configurations in the small power output capacity range. The gas turbines used in the calculations find application in commercial gas turbine steam bottoming cycles. Article includes results of the thermodynamic optimization of gas turbine air bottoming cycle. Calculations include design features of air bottoming cycle heat exchangers. The most essential aspect of the analysis is the economic comparison. The results are compared to performance characteristics of real gas turbine steam bottoming cycles. Quantities are determined that have a decisive impact on the considered units profitability and competitiveness compared to the popular technology based on steam bottoming cycle systems. The ultimate quantity that can be compared in the calculations is the marginal cost of electricity.

Suggested Citation

  • Chmielniak, T. & Czaja, D. & Lepszy, S. & Stępczyńska-Drygas, K., 2015. "Thermodynamic and economic comparative analysis of air and steam bottoming cycle," Energy, Elsevier, vol. 92(P2), pages 189-196.
    • Handle: RePEc:eee:energy:v:92:y:2015:i:p2:p:189-196
    DOI: 10.1016/j.energy.2015.04.019
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    References listed on IDEAS

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    1. Ghazikhani, M. & Passandideh-Fard, M. & Mousavi, M., 2011. "Two new high-performance cycles for gas turbine with air bottoming," Energy, Elsevier, vol. 36(1), pages 294-304.
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    Cited by:

    1. Badur, Janusz & Lemański, Marcin & Kowalczyk, Tomasz & Ziółkowski, Paweł & Kornet, Sebastian, 2018. "Zero-dimensional robust model of an SOFC with internal reforming for hybrid energy cycles," Energy, Elsevier, vol. 158(C), pages 128-138.
    2. Alklaibi, A.M. & Khan, M.N. & Khan, W.A., 2016. "Thermodynamic analysis of gas turbine with air bottoming cycle," Energy, Elsevier, vol. 107(C), pages 603-611.

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