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A novel thermally driven rotor-vane/pressure-exchange ejector refrigeration system with environmental benefits and energy efficiency

Author

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  • Hong, Woo Jong
  • Alhussan, Khaled
  • Zhang, Hongfang
  • Garris, Charles A.

Abstract

The latest results of an ongoing coordinated experimental and computational program on the design and performance of a novel supersonic rotor-vane/pressure-exchange ejector for thermally driven ejector refrigeration systems are presented. For the supersonic rotor-vane/pressure-exchange ejector, careful management of the entropy rise through the oblique shocks and boundary layers is required for obtaining an advance in ejector performance. Since the invention of this new ejector is quite recent, understanding its aerodynamics, with the consequent optimization of performance, is in the formative stage. This paper shows how the supersonic aerodynamics is managed to provide the desirable flow induction characteristics through computational study and, in parallel, experimental results including flow visualization showing actual behavior with different-shaped rotor vanes. The importance of the existence of the tail part with a long expansion ramp, the sharp leading edge such as knife-edge, the proper height of leading edges, for the overall shape of rotor vane, were observed. Also the larger spin-angle rotor vane produces better flow induction and mixing between primary flow and secondary flow.

Suggested Citation

  • Hong, Woo Jong & Alhussan, Khaled & Zhang, Hongfang & Garris, Charles A., 2004. "A novel thermally driven rotor-vane/pressure-exchange ejector refrigeration system with environmental benefits and energy efficiency," Energy, Elsevier, vol. 29(12), pages 2331-2345.
    • Handle: RePEc:eee:energy:v:29:y:2004:i:12:p:2331-2345
    DOI: 10.1016/j.energy.2004.03.050
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    Cited by:

    1. Chen, Xiangjie & Omer, Siddig & Worall, Mark & Riffat, Saffa, 2013. "Recent developments in ejector refrigeration technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 19(C), pages 629-651.
    2. Chen, Jianyong & Jarall, Sad & Havtun, Hans & Palm, Björn, 2015. "A review on versatile ejector applications in refrigeration systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 49(C), pages 67-90.
    3. Zhang, Hongfang & Garris Jr., Charles A., 2008. "Crypto-steady supersonic pressure exchange: A simple analytical model," Applied Energy, Elsevier, vol. 85(4), pages 228-242, April.
    4. Besagni, Giorgio & Mereu, Riccardo & Inzoli, Fabio, 2016. "Ejector refrigeration: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 373-407.
    5. Li, Chennan & Goswami, D. Yogi & Shapiro, Andrew & Stefanakos, Elias K. & Demirkaya, Gokmen, 2012. "A new combined power and desalination system driven by low grade heat for concentrated brine," Energy, Elsevier, vol. 46(1), pages 582-595.
    6. Yilmaz, Tuncay & Erdinç, Mehmet Tahir, 2019. "Energetic and exergetic investigation of a novel refrigeration system utilizing ejector integrated subcooling using different refrigerants," Energy, Elsevier, vol. 168(C), pages 712-727.
    7. Zhang, Hongfang & Garris Jr., Charles A., 2008. "Crypto-steady supersonic pressure-exchange: A simple analytical model," Applied Energy, Elsevier, vol. 85(1), pages 26-40, January.

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