Application of CO2 (R744) Refrigerant in Industrial Cold Storage Refrigeration Plant
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Application of CO2 (R744) Refrigerant in Industrial Cold Storage Refrigeration Plant
This paper describes four single stage CO2 (R744) vapour compression refrigeration systems servicing two medium sized freezer stores located in a food processing facility situated in Brisbane, Australia. The processes which lead to the selection of carbon dioxide as a refrigerant as well as the selection of condensing medium are detailed. In addition, the general plant design concept, plant control, automatic defrost method, practical issues relating to the installation and practical difficulties encountered during commissioning are described in detail. An assessment of the long term reliability of the R744 systems is made and future applications of R744 as a refrigerant are discussed.
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