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Reducing Refrigeration Costs in the Dairy Plant

Department of Agricultural Engineering, Michigan State University, East Lansing

ABSTRACT

The first step in reducing costs of refrigeration is to produce the refrigeration efficiently, by operating at as high a suction pressure and at as low a head pressure as possible, while still maintaining the desired evaporator temperature. By following these practices, it is estimated many plant operators can reduce their costs on an average of $3 per day for a plant with 40,000-lb. capacity. The next step is to reduce the need for these refrigeration services wherever possible. Then study each individual operation, to locate sourees of energy losses. The principles are the same, whether steam or refrigeration are involved. If the plant operations are observed critically, costs can be reduced and income increased.