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Effect of a partial thermal decomposition of the working fluid on the performances of ORC power plants

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  • Rajabloo, Talieh
  • Bonalumi, Davide
  • Iora, Paolo

Abstract

In the scenario of increasing of the worldwide energy demand an important role can be played by the Organic Rankine cycle (ORC). Due to the nature of the working fluids, they partially decompose with the temperature. The main focus of this paper is to evaluate the behavior of the power plants that operate with a partially decomposed organic fluid. The investigated fluids are MDM and isopentane. An explorative investigation of the plant with pure fluid is performed in order to evaluate the general behavior of the plant varying the conditions of the heat source and of the heat rejection. Moreover, off-design analysis of the cycles when the working fluid encounters thermal decomposition is proposed. Off-design analysis shows that properties of decomposed products could significantly affect cycle efficiency. Both fluids decomposes with formation of methane. The presence of this one has high impact on the condensation and therefore on the decreasing of performances of the power plant.

Suggested Citation

  • Rajabloo, Talieh & Bonalumi, Davide & Iora, Paolo, 2017. "Effect of a partial thermal decomposition of the working fluid on the performances of ORC power plants," Energy, Elsevier, vol. 133(C), pages 1013-1026.
    • Handle: RePEc:eee:energy:v:133:y:2017:i:c:p:1013-1026
    DOI: 10.1016/j.energy.2017.05.129
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    Citations

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    Cited by:

    1. Xia, Jiaxi & Wang, Jiangfeng & Lou, Juwei & Hu, Jianjun & Yao, Sen, 2023. "Thermodynamic, economic, environmental analysis and multi-objective optimization of a novel combined cooling and power system for cascade utilization of engine waste heat," Energy, Elsevier, vol. 277(C).
    2. Huo, Erguang & Hu, Zheng & Wang, Shukun & Xin, Liyong & Bai, Mengna, 2022. "Thermal decomposition and interaction mechanism of HFC-227ea/n-hexane as a zeotropic working fluid for organic Rankine cycle," Energy, Elsevier, vol. 246(C).
    3. Tieyu Gao & Changwei Liu, 2017. "Off-Design Performances of Subcritical and Supercritical Organic Rankine Cycles in Geothermal Power Systems under an Optimal Control Strategy," Energies, MDPI, vol. 10(8), pages 1-25, August.
    4. Costante M. Invernizzi & Abubakr Ayub & Gioele Di Marcoberardino & Paolo Iora, 2019. "Pure and Hydrocarbon Binary Mixtures as Possible Alternatives Working Fluids to the Usual Organic Rankine Cycles Biomass Conversion Systems," Energies, MDPI, vol. 12(21), pages 1-17, October.
    5. Li, Xiaoya & Xu, Bin & Tian, Hua & Shu, Gequn, 2021. "Towards a novel holistic design of organic Rankine cycle (ORC) systems operating under heat source fluctuations and intermittency," Renewable and Sustainable Energy Reviews, Elsevier, vol. 147(C).
    6. Li, Ligeng & Tian, Hua & Shi, Lingfeng & Zhang, Yonghao & Huang, Guangdai & Zhang, Hongfei & Wang, Xuan & Shu, Gequn, 2022. "Experimental investigation of a splitting CO2 transcritical power cycle in engine waste heat recovery," Energy, Elsevier, vol. 244(PB).
    7. Mohammad Ali Motamed & Lars O. Nord, 2021. "Assessment of Organic Rankine Cycle Part-Load Performance as Gas Turbine Bottoming Cycle with Variable Area Nozzle Turbine Technology," Energies, MDPI, vol. 14(23), pages 1-18, November.

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