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A chemically intercooled gas turbine cycle for recovery of low-temperature thermal energy

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  • Jin, Hongguang
  • Hong, Hui
  • Cai, Ruixian

Abstract

In this paper, we have proposed a gas turbine combined cycle with the integration of low-temperature thermal energy and methanol decomposition, and also investigated a principle of the cascade utilization of chemical exergy of fuel. Here, the combustion of methanol fuel is divided up into two steps: the methanol is decomposed into the syngas with hydrogen and carbon monoxide through recovering the low-temperature thermal energy from an intercooler of a gas turbine, and then the syngas is combusted with air, namely, the indirect combustion of methanol. As a result, the exergy destruction in the combustion of syngas is expected to be decreased by 7.5 percentage points of the input energy of cycle; at the same time, the low-temperature thermal energy is upgraded to the chemical energy of fuel, and the thermal efficiency of this gas turbine cycle is expected to be about 6 percent points higher than that of a conventionally combined cycle with intercooling at the turbine inlet temperature of 1300°C and at a given overall pressure ratio of 15. The promising results obtained here indicated that this gas turbine combined cycle could simultaneously accomplish the decrease of exergy destruction in combustion and the upgrade of low-temperature thermal energy levels, leading to the effective utilization of clean syngas fuel and the recovery of low-temperature thermal energy in power system.

Suggested Citation

  • Jin, Hongguang & Hong, Hui & Cai, Ruixian, 2006. "A chemically intercooled gas turbine cycle for recovery of low-temperature thermal energy," Energy, Elsevier, vol. 31(10), pages 1554-1566.
    • Handle: RePEc:eee:energy:v:31:y:2006:i:10:p:1554-1566
    DOI: 10.1016/j.energy.2005.05.019
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    Cited by:

    1. Li, Wenjia & Hao, Yong & Wang, Hongsheng & Liu, Hao & Sui, Jun, 2017. "Efficient and low-carbon heat and power cogeneration with photovoltaics and thermochemical storage," Applied Energy, Elsevier, vol. 206(C), pages 1523-1531.
    2. Jin, Hongguang & Xu, Gang & Han, Wei & Gao, Lin & Li, Zheng, 2010. "Sustainable development of energy systems for western China," Energy, Elsevier, vol. 35(11), pages 4313-4318.
    3. Blanco, Elena C. & Sánchez, Antonio & Martín, Mariano & Vega, Pastora, 2023. "Methanol and ammonia as emerging green fuels: Evaluation of a new power generation paradigm," Renewable and Sustainable Energy Reviews, Elsevier, vol. 175(C).
    4. Li, Wenjia & Hao, Yong, 2017. "Efficient solar power generation combining photovoltaics and mid-/low-temperature methanol thermochemistry," Applied Energy, Elsevier, vol. 202(C), pages 377-385.
    5. 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.
    6. Luo, Chending & Zhang, Na & Lior, Noam & Lin, Hu, 2011. "Proposal and analysis of a dual-purpose system integrating a chemically recuperated gas turbine cycle with thermal seawater desalination," Energy, Elsevier, vol. 36(6), pages 3791-3803.
    7. Zhang, Guoqiang & Yang, Yongping & Jin, Hongguang & Xu, Gang & Zhang, Kai, 2013. "Proposed combined-cycle power system based on oxygen-blown coal partial gasification," Applied Energy, Elsevier, vol. 102(C), pages 735-745.
    8. Choudhary, Tushar & Sanjay,, 2017. "Thermodynamic assessment of SOFC-ICGT hybrid cycle: Energy analysis and entropy generation minimization," Energy, Elsevier, vol. 134(C), pages 1013-1028.
    9. Xiaosong Zhang & Sheng Li & Hongguang Jin, 2014. "A Polygeneration System Based on Multi-Input Chemical Looping Combustion," Energies, MDPI, vol. 7(11), pages 1-12, November.

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