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Experimental study on a quasi two-stage compression heat-pump system coupled with an ejector.

Author(s) : PANG Z., MA G., YU L.

Summary

To test and study the performance of a quasi two-stage compression heat-pump system coupled with ejectors, three kinds of ejectors have been designed, and heat pump prototypes have been set up with different ejectors. When condensation temperature keeps at 45°C and evaporation temperature varies from -8 to -25°C, the performance of each heat pump prototype has been comprehensively tested. The experimental results demonstrate that the heat-pump system coupled with ejector has better performance than the quasi two-stage heat pump system under the design conditions, but its performance will decrease under the off-design conditions. The heat-pump system coupled with an optimized ejector can obtain an excellent performance in a wide range of operation conditions, and its heating COP can be about 10% higher than that of the heat-pump system without an ejector.

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Pages: ICR07-E2-542

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Details

  • Original title: Experimental study on a quasi two-stage compression heat-pump system coupled with an ejector.
  • Record ID : 2008-0374
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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