Sobeys has installed transcritical CO2 refrigeration systems in 36 stores, more than any other North American retailer.
Sobeys has been a North American pioneer in the deployment of transcritical refrigeration systems that use only carbon dioxide as a refrigerant. (See “Refrigeration Systems Chillin’ With Carbon Dioxide,” SN, April 9, 2012.) When CO2 leaks from refrigeration systems into the atmosphere — in contrast to when it is produced by the combustion of fossil fuels — it contributes very little to global warming. That is why carbon dioxide is seen as a long-term ...
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