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Performance measurements of a hermetic two-stage carbon dioxide compressor.

Author(s) : HUBACHER B., GROLL E. A.

Summary

The paper describes the performance measurements of a prototype carbon dioxide compressor using a compressor load stand, which is based on a hot-gas bypass design. The compressor is a hermetic, rotary-type, two-stage compressor with an estimated cooling capacity of 2.8 kW (0.8 tons of refrigeration). Compressor tests were conducted for varying suction temperatures and pressures, and discharge pressures. For each test, the compressor's mass flow rate, power consumption, and temperatures and pressures at each state point were recorded. In addition, the volumetric and overall isentropic efficiencies were reported. In a final step, compressor maps were established by fitting three-degree polynomial equations based on the collected performance data. These equations will be useful for future carbon dioxide system modelling.

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Details

  • Original title: Performance measurements of a hermetic two-stage carbon dioxide compressor.
  • Record ID : 2004-0152
  • Languages: English
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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