Success Stories: Refrigeration
Leakages in traditional refrigerant systems in stores and retail support centres (RSCs) account for approximately 25% of Sobeys’ aggregate carbon footprint. The transcritical CO2 refrigerant system, which has become the new national standard for refrigerant systems at Sobeys, is a low Global Warming Potential (GWP) alternative to the traditional systems.
Traditional hydrofluorocarbon (HFC) refrigerants have an approximate GWP of 4,000 kg of CO2 equivalent emissions for every 1 kg of refrigerant leaked, whereas the new refrigeration system has 1 kg of CO2 emissions for every 1 kg of refrigerant leaked.
The installation of new CO2 refrigerant systems with heat reclamation not only makes environmental sense, but is less expensive in the long run to operate and maintain. We currently have 72 transcritical CO2 refrigerant systems installed in four different provinces. Of these, 34 have been recognized by the Greenchill platinum-level certification award for notable achievements in using natural refrigerants.