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An evaluation of advanced combined cycles

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  • Rao, Ashok D.
  • Francuz, David J.

Abstract

The main objective of this investigation is to identify and assess advanced improvements to the combined cycle such as gas turbine firing temperature, pressure ratio, combustion techniques, intercooling, enhanced blade cooling schemes and supercritical steam cycles that will lead to significant performance improvements in coal based power systems. This assessment is conducted in the context of conceptual designs that advance state-of-art combined cycles and result in an 8% reduction in heat rate over a coal based Integrated Gasification Combined Cycle (IGCC) plant utilizing an H class gas turbine technology with steam cooling. This efficiency goal for the study was set by the United States Department of Energy. H class gas turbines are commercially offered by General Electric (GE), Mitsubishi and Siemens for natural gas based combined cycle applications with 60% efficiency (LHV) and it is expected that such machines will be offered for syngas applications within the next 5–10years, while our investigation looks further beyond that time frame. The levelized cost of electricity for an IGCC utilizing the H class gas turbine is $86/MWh while that for the advanced IGCC identified in this investigation consisting of an intercooled gas turbine with a firing temperature that is 340°C higher is $79/MWh which is a significant 8% reduction.

Suggested Citation

  • Rao, Ashok D. & Francuz, David J., 2013. "An evaluation of advanced combined cycles," Applied Energy, Elsevier, vol. 102(C), pages 1178-1186.
    • Handle: RePEc:eee:appene:v:102:y:2013:i:c:p:1178-1186
    DOI: 10.1016/j.apenergy.2012.06.035
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    Cited by:

    1. Colmenar-Santos, Antonio & Gómez-Camazón, David & Rosales-Asensio, Enrique & Blanes-Peiró, Jorge-Juan, 2018. "Technological improvements in energetic efficiency and sustainability in existing combined-cycle gas turbine (CCGT) power plants," Applied Energy, Elsevier, vol. 223(C), pages 30-51.
    2. Sahu, Mithilesh Kumar & Sanjay,, 2017. "Comparative exergoeconomics of power utilities: Air-cooled gas turbine cycle and combined cycle configurations," Energy, Elsevier, vol. 139(C), pages 42-51.
    3. Sousa, Jorge & Paniagua, Guillermo & Collado Morata, Elena, 2017. "Thermodynamic analysis of a gas turbine engine with a rotating detonation combustor," Applied Energy, Elsevier, vol. 195(C), pages 247-256.
    4. Carcasci, Carlo & Cosi, Lorenzo & Ferraro, Riccardo & Pacifici, Beniamino, 2017. "Effect of a real steam turbine on thermoeconomic analysis of combined cycle power plants," Energy, Elsevier, vol. 138(C), pages 32-47.
    5. Rossi, Iacopo & Sorce, Alessandro & Traverso, Alberto, 2017. "Gas turbine combined cycle start-up and stress evaluation: A simplified dynamic approach," Applied Energy, Elsevier, vol. 190(C), pages 880-890.
    6. Kotowicz, Janusz & Brzęczek, Mateusz & Job, Marcin, 2018. "The thermodynamic and economic characteristics of the modern combined cycle power plant with gas turbine steam cooling," Energy, Elsevier, vol. 164(C), pages 359-376.
    7. Pan, Ming & Aziz, Farah & Li, Baohong & Perry, Simon & Zhang, Nan & Bulatov, Igor & Smith, Robin, 2016. "Application of optimal design methodologies in retrofitting natural gas combined cycle power plants with CO2 capture," Applied Energy, Elsevier, vol. 161(C), pages 695-706.
    8. Kotowicz, Janusz & Brzęczek, Mateusz, 2019. "Comprehensive multivariable analysis of the possibility of an increase in the electrical efficiency of a modern combined cycle power plant with and without a CO2 capture and compression installations ," Energy, Elsevier, vol. 175(C), pages 1100-1120.
    9. Dong, Pengcheng & Tang, Hailong & Chen, Min & Zou, Zhengping, 2018. "Overall performance design of paralleled heat release and compression system for hypersonic aeroengine," Applied Energy, Elsevier, vol. 220(C), pages 36-46.
    10. Chen, Qin & Rao, Ashok & Samuelsen, Scott, 2015. "Coproduction of transportation fuels in advanced IGCCs via coal and biomass mixtures," Applied Energy, Elsevier, vol. 157(C), pages 851-860.
    11. Hanak, D.P. & Kolios, A.J. & Biliyok, C. & Manovic, V., 2015. "Probabilistic performance assessment of a coal-fired power plant," Applied Energy, Elsevier, vol. 139(C), pages 350-364.
    12. Sanjay, & Prasad, Bishwa N., 2013. "Energy and exergy analysis of intercooled combustion-turbine based combined cycle power plant," Energy, Elsevier, vol. 59(C), pages 277-284.
    13. Chen, Qin & Rao, Ashok & Samuelsen, Scott, 2014. "H2 coproduction in IGCC with CCS via coal and biomass mixture using advanced technologies," Applied Energy, Elsevier, vol. 118(C), pages 258-270.

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