Development and Performance Measurements of a Small Compressor for Transcritical CO2 Applications
نویسندگان
چکیده
The use of carbon dioxide (CO2) as a refrigerant is considered for an increasing number of various applications including low capacity transcritical processes. Due to the fluid properties of CO2, the pressure ratio of the refrigeration process is rather low compared to common refrigeration processes while the pressure difference is high. Furthermore, the volumetric capacity of CO2 is higher than for traditional refrigerants. These facts result in special demands regarding the design of suitable components and especially compressors to be able to meet the demands regarding the overall systems performance. It is found that different strategies for suction and discharge processes can be applied for transcritical CO2. This paper describes the development and resulting performance characteristics of such a small compressor using CO2 as the refrigerant.
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