Conventional supermarket refrigeration systems commonly use HCFC 22, an ozone depleting and very high Global Warming Potential (GWP) refrigerant gas.
Replacement of these systems with cascade or transcritical CO2 systems will assist both phase out requirements of the Montreal Protocol, and also compliance with Kyoto Protocol obligations to control emissions of high GWP HFC alternatives. Based on the Australian experience, CO2 systems will have higher initial installation costs of
Conventional supermarket refrigeration systems commonly use HCFC 22, an ozone depleting and very high Global Warming Potential (GWP) refrigerant gas.
Replacement of these systems with cascade or transcritical CO2 systems will assist both phase out requirements of the Montreal Protocol, and also compliance with Kyoto Protocol obligations to control emissions of high GWP HFC alternatives. Based on the Australian experience, CO2 systems will have higher initial installation costs of around 20%, although it is expected that capital equipment costs will decrease once the volume of installed systems grows. Reductions in annual electricity costs of up to 23% are expected to be achievable with transcritical CO2 systems, depending on the climatic zone in which facilities are located.
Due to the energy savings, CO2 systems will deliver further greenhouse gas emission reductions and provide a short-term payback period on higher installation costs.
Replacement of these systems with cascade or transcritical CO2 systems will assist both phase out requirements of the Montreal Protocol, and also compliance with Kyoto Protocol obligations to control emissions of high GWP HFC alternatives. Based on the Australian experience, CO2 systems will have higher initial installation costs of around 20%, although it is expected that capital equipment costs will decrease once the volume of installed systems grows. Reductions in annual electricity costs of up to 23% are expected to be achievable with transcritical CO2 systems, depending on the climatic zone in which facilities are located.
Due to the energy savings, CO2 systems will deliver further greenhouse gas emission reductions and provide a short-term payback period on higher installation costs.
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By Danfoss , published May 31, 2016 - 2 pages
 Supermarket Refrigeration in Australia By the Australian Green Cooling Council&description=Conventional supermarket refrigeration systems commonly use HCFC 22, an ozone depleting and very high...){kind=link}