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Energy comparisons between CO2 cascade systems and state of the art R404A systems.

Author(s) : KNUDSEN H. J. H., PACHAI A. C.

Summary

In 2002, two cascade systems with CO2 and R404A were installed. The display cabinets and cooling/freezing rooms are cooled directly by CO2 in the low temperature part of the cascade plant, while the high temperature part of the cascade plant is using R404A. Initial monitoring of the absorbed power and the observed employed compressors lead to the belief that there was an energy reduction, but it was difficult to quantify. The problem is that two supermarkets are not identical. The Danish EPA has sponsored a research project with the purpose to find a method to make the data collected comparable and to put numbers on the energy reductions observed. This presentation describes the methods used to compare state of the art R404A technology systems and two CO2/R404A cascade systems.

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Pages: 2004-2

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Details

  • Original title: Energy comparisons between CO2 cascade systems and state of the art R404A systems.
  • Record ID : 2005-2600
  • Languages: English
  • Source: Natural Working Fluids 2004: 6th IIR-Gustav Lorentzen Conference
  • Publication date: 2004/08/01

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