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Experiences in renewal of cold storage facilities from R22 to NH3/CO2 in Japan.

Number: Keynote D1-Fr-1

Author(s) : KAWAMURA K.

Summary

In Japan, many cold storage warehouses were built using refrigerants HCFC22 or HFC23 in cascades up to early 2000. Production of HCFC22 will stop from 2020 and HFC23 is also expected to be banned because of its high GWP. NH3/CO2 refrigeration equipments were developed and installed as replacements for HCFC22 systems because of their lower energy consumption and are friendly to the environment. Air refrigeration equipments have also been introduced in extremely low temperature ranges such as -60C tuna warehouses as replacements for HFC23 cascades. Air refrigeration system offer low power consumption compared to the conventional HFC systems. This paper introduces concepts of NH3/CO2 secondary refrigerant system and air refrigeration equipments and gives actual energy comparisons with HCFC22 and HFC23systems.

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Pages: 11 p.

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Details

  • Original title: Experiences in renewal of cold storage facilities from R22 to NH3/CO2 in Japan.
  • Record ID : 30015409
  • Languages: English
  • Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Publication date: 2015/08/16
  • DOI: http://dx.doi.org/10.18462/iir.icr.2015.1006

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