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Performance evaluation of a combined ejector-vapor compression cycle

Author

Listed:
  • Yan, Jia
  • Cai, Wenjian
  • Zhao, Lei
  • Li, Yanzhong
  • Lin, Chen

Abstract

This paper describes the development of a combined ejector-vapor compression cycle (EVCC) that uses working fluid R134a and air-cooled condensers for both sub-cycles. A large amount of experiments have been conducted to test the influence of the evaporating, generating and condensing temperatures of the ejector sub-cycle (ESC) on the performances of EVCC. The test results show that (1) the performance of the combined cycle is very sensitive to the three temperatures of ESC; (2) the variation of the degree of sub-cooling at the vapor compression sub-cycle (VCSC) is similar to that of COP improvement at EVCC over VCSC; and (3) this system with certain operating conditions results in relatively high COP improvements (15.9–21.0%).

Suggested Citation

  • Yan, Jia & Cai, Wenjian & Zhao, Lei & Li, Yanzhong & Lin, Chen, 2013. "Performance evaluation of a combined ejector-vapor compression cycle," Renewable Energy, Elsevier, vol. 55(C), pages 331-337.
    • Handle: RePEc:eee:renene:v:55:y:2013:i:c:p:331-337
    DOI: 10.1016/j.renene.2012.12.029
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    References listed on IDEAS

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    1. Alexis, G.K. & Karayiannis, E.K., 2005. "A solar ejector cooling system using refrigerant R134a in the Athens area," Renewable Energy, Elsevier, vol. 30(9), pages 1457-1469.
    2. Meyer, A.J. & Harms, T.M. & Dobson, R.T., 2009. "Steam jet ejector cooling powered by waste or solar heat," Renewable Energy, Elsevier, vol. 34(1), pages 297-306.
    3. Li, C.H. & Wang, R.Z. & Lu, Y.Z., 2002. "Investigation of a novel combined cycle of solar powered adsorption–ejection refrigeration system," Renewable Energy, Elsevier, vol. 26(4), pages 611-622.
    4. Sankarlal, T. & Mani, A., 2007. "Experimental investigations on ejector refrigeration system with ammonia," Renewable Energy, Elsevier, vol. 32(8), pages 1403-1413.
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    Cited by:

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    3. Mortazavi, Hamed & Beni, Hamidreza Mortazavy & Nadooshan, Afshin Ahmadi & Islam, Mohammad S. & Ghalambaz, Mohammad, 2024. "4E analysis and triple objective NSGA-II optimization of a novel solar-driven combined ejector-enhanced power and two-stage cooling (EORC-TCRC) system," Energy, Elsevier, vol. 294(C).

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