To understand the future of commercial refrigeration, look to CO2’s past

By Derek Gosselin Hillphoenix Systems Product Manager Using carbon dioxide as a refrigerant seems like a new solution to today’s challenge of lowering the global warming potential of commercial refrigeration systems. But, as industry researcher James M. Calm has documented, the use of CO2 as a refrigerant actually stretches back to 1866. In subsequent decades CO2, ammonia and other early [...]