CAMAS, Wash. -- Fred Meyer Inc. is projecting a 15% to 20% reduction in refrigeration costs as a result of switching to a new-generation coolant and a two-stage compressor system at a store here. If successful, the system could serve as a model for future installations at the chain, said David Wright, mechanical engineer at Fred Meyer, Portland, Ore. The chain's new 165,000-square-foot supercenter is pairing the hydrofluorocarbon coolant R-507 with two-stage compressors to maximize cooling ...
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