Keeping products cool can be costly. For some supermarkets it's their largest single energy expense, so using efficient cooling methods can have a strong effect on the bottom line. Complicating this process, however, is the imminent banning of some commonly used coolants on environmental grounds. Retailers are taking numerous paths to reach the common goal of cost and energy efficiency. Although chlorofluorocarbon production has been banned and use of CFCs is being phased out, and ...

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