Transactions of Nanjing University of Aeronautics & Astronautics
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Experimental Research on the Performance of an Open Loop Cycle Carbon Dioxide Refrigeration System
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Abstract:
Carbon dioxide is an ideal natural refrigerant because of its advantageous characteristics. In this study, an open loop cycle carbon dioxide (CO2) refrigeration system is established, and the cooling performances of high-pressure CO2 at different storage conditions (25°C, 30°C, and 35°C) are investigated. Moreover, the experimental mass flow rates of CO2 are compared with the theoretical values at different conditions and refrigeration capacities. The results indicate that the storage condition of CO2 has a significant impact on the refrigeration performance and the mass flow rate of CO2 increases with increasing storage temperature at a given refrigeration capacity.
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