THE RESEARCH PROGRESS ON THE CARBON DIOXIDE TRANSCRITICAL CIRCULATION REFRIGERATION

The typical flow and the characteristic of the CO₂ transcritical refrigeration cycle are produced.Four aspect research current situation—the properties of supercritical CO₂,CO₂ refrigeration cycles,CO₂ refrigeration equipment exploitation and the system security and reliability of the CO₂ transcritical circulation—has been carried on the summary.The development tendency of the carbon dioxide transcritical circulation refrigeration has been indicated.