Research and application progress of transcritical CO2 refrigeration cycle system: a review

Abstract CO2 refrigerant and its transcritical cycle system have become the research focus in refrigeration field due to their advantages of environmentally friendly, safe low environmental temperature adaptability. This paper summarizes progress on modified methods for defects basic recent years. Meanwhile, technical status technology commercial supermarket refrigeration, heat pump system, automobile air conditioning artificial ice rink is discussed detail. Finally, development prospected key problems be solved are put forward.