| 摘要 |
The invention provides a refrigeration system including a plurality of refrigerated display cases. Each display case has a dedicated evaporator assembly that cools return air by evaporating a refrigerant, and a first stage compressor assembly that is in fluid communication with the respective evaporator assembly to compress the refrigerant to a first pressure corresponding to a first temperature of the refrigerant prior to discharge of the compressed refrigerant. The refrigeration system also includes a second stage compressor assembly that is in fluid communication with the first stage compressor assemblies to compress the refrigerant to a second pressure that is higher than the first pressure, and that corresponds to a second temperature of the refrigerant. The refrigeration system further includes a heat exchanger that is in fluid communication with the second stage compressor assembly to receive the refrigerant from the second stage compressor assembly to reject heat from the refrigerant.
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