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Liquid-flooded Ericsson cycle cooler. 2. Experimental results.

Author(s) : HUGENROTH J., BRAUN J., GROLL E., et al.

Summary

An experimental test program was conducted on a novel Ericsson cycle heat pump. The concept uses liquid flooding of the compressor and expander to approach isothermal compression and expansion processes. Open drive automotive scrolls were used in the experimental system. Numerous experiments were run at various conditions using nitrogen as the refrigerant and alkylbenzene oil as the flooding liquid. Volumetric cooling capacities of over 110 kJ/m3 were measured, and second law efficiencies of approximately 3% were achieved. Similar to other gas cycles, the cycle performance is very sensitive to the adiabatic efficiencies of the rotating equipment and the performance of the off-the-shelf equipment was not sufficient to achieve good cycle efficiency. In addition, large pressure drops occurred in the system due to the instrumentation used, and the long and arduous flow paths. The scroll compressor and expander were found to perform reasonably well considering that they were not designed for the operating conditions encountered. See also this Bulletin, reference 2007-1746.

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Details

  • Original title: Liquid-flooded Ericsson cycle cooler. 2. Experimental results.
  • Record ID : 2007-1747
  • Languages: English
  • Source: 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2006/07/17

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