COLUMBIA, S.C. — Food Lion is seeing a “slight energy savings” from a cascade carbon dioxide refrigeration system used in a store here that opened last December, said Wayne Rosa, energy and maintenance manager for the Salisbury, N.C.-based chain. As a result, Food Lion is expecting a payback of about 20 years for its investment in the system, from Hill Phoenix, Conyers, Ga. “The incremental cost of the CO2 technology at this point leads to a pretty lengthy payback,” he said. The cascade ...

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