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Thermodynamic analysis of Organic Rankine Cycle with Ejector

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  • Li, Xinguo
  • Zhao, Cuicui
  • Hu, Xiaochen

Abstract

The low efficiency of Organic Rankine Cycle (ORC) with low-grade heat source (LGHS) has limited its use in industry. In order to increase the power output capacity and its efficiency, an Organic Rankine Cycle with Ejector (EORC) was proposed in this paper. In the EORC, an ejector and a second-stage evaporator were added to the ORC. The vapor from the second-stage evaporator worked as the primary fluid for the ejector, to suck the exhaust from the expander so as to decrease the expander backpressure and increase the pressure difference through the expander, which resulted in an increase of the power output capacity. A Double Organic Rankine Cycle (DORC) was also introduced in order to analyze and compare the EORC with the ORC and DORC in the thermal performance. The output capacity was increased by EORC and DORC compared to the ORC. The thermal performance of DORC was superior to EORC, but another expander-generator and its auxiliary equipments were required for the DORC led to increase the investment and operation management compared to the EORC.

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  • Li, Xinguo & Zhao, Cuicui & Hu, Xiaochen, 2012. "Thermodynamic analysis of Organic Rankine Cycle with Ejector," Energy, Elsevier, vol. 42(1), pages 342-349.
    • Handle: RePEc:eee:energy:v:42:y:2012:i:1:p:342-349
    DOI: 10.1016/j.energy.2012.03.047
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    References listed on IDEAS

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    2. Liu, Wei & Meinel, Dominik & Wieland, Christoph & Spliethoff, Hartmut, 2014. "Investigation of hydrofluoroolefins as potential working fluids in organic Rankine cycle for geothermal power generation," Energy, Elsevier, vol. 67(C), pages 106-116.
    3. Yun, Eunkoo & Kim, Dokyun & Yoon, Sang Youl & Kim, Kyung Chun, 2015. "Experimental investigation of an organic Rankine cycle with multiple expanders used in parallel," Applied Energy, Elsevier, vol. 145(C), pages 246-254.
    4. Meinel, Dominik & Wieland, Christoph & Spliethoff, Hartmut, 2014. "Economic comparison of ORC (Organic Rankine cycle) processes at different scales," Energy, Elsevier, vol. 74(C), pages 694-706.
    5. Khaliq, Abdul & Kumar, Rajesh & Mokheimer, Esmail M.A., 2018. "Investigation on a solar thermal power and ejector-absorption refrigeration system based on first and second law analyses," Energy, Elsevier, vol. 164(C), pages 1030-1043.
    6. Besagni, Giorgio & Mereu, Riccardo & Inzoli, Fabio, 2016. "Ejector refrigeration: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 373-407.
    7. Fahid Riaz & Fu Zhi Yam & Muhammad Abdul Qyyum & Muhammad Wakil Shahzad & Muhammad Farooq & Poh Seng Lee & Moonyong Lee, 2021. "Direct Analytical Modeling for Optimal, On-Design Performance of Ejector for Simulating Heat-Driven Systems," Energies, MDPI, vol. 14(10), pages 1-21, May.
    8. Wang, Dongxiang & Ling, Xiang & Peng, Hao & Liu, Lin & Tao, LanLan, 2013. "Efficiency and optimal performance evaluation of organic Rankine cycle for low grade waste heat power generation," Energy, Elsevier, vol. 50(C), pages 343-352.
    9. Yun, Eunkoo & Kim, Dokyun & Lee, Minseog & Baek, Seungdong & Yoon, Sang Youl & Kim, Kyung Chun, 2016. "Parallel-expander Organic Rankine cycle using dual expanders with different capacities," Energy, Elsevier, vol. 113(C), pages 204-214.
    10. Habibi, Hamed & Chitsaz, Ata & Javaherdeh, Koroush & Zoghi, Mohammad & Ayazpour, Mojtaba, 2018. "Thermo-economic analysis and optimization of a solar-driven ammonia-water regenerative Rankine cycle and LNG cold energy," Energy, Elsevier, vol. 149(C), pages 147-160.
    11. Padilla, Ricardo Vasquez & Too, Yen Chean Soo & Benito, Regano & McNaughton, Robbie & Stein, Wes, 2016. "Thermodynamic feasibility of alternative supercritical CO2 Brayton cycles integrated with an ejector," Applied Energy, Elsevier, vol. 169(C), pages 49-62.

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