Design Considerations for a Low-Charge, Central Ammonia Refr
Design Considerations for a Low-Charge, Central Ammonia Refrigeration System Retrofit of an Existing Cold Storage Warehouse (2000)-As we enter the twenty-first century, the food storage and distribution industry is witnessing a return to the refrigerant of its roots: ammonia. The ban on the manufacture of CFCs, utilized as an alternative to ammonia for the industry from the 1940s through the 1980s, forced corporations and business owners to either construct new plants or retrofit old plants with either ammonia or an alternative refrigerant. For the Superfresh grocery store chain, converting existing cold storage warehouses from R-12 to ammonia at their Baltimore, Maryland, distribution center meant making many decisions to meet the challenge of renovating a 1950s warehouse complex and refrigeration system. In the end, the modernizing of this facility and the designing and installing of a state-of-the-art ammonia refrigeration system was an unqualified success.
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