Abstract: Compressor is the heart component of refrigerator. The performance of compressor is an important factor affecting the energy consumption of refrigerator. According to the specified test and data processing methods, according to the specified test and data processing methods, the working conditions of the refrigeration system under the actual operation of the air-cooled refrigerator are studied. It is found that the compressor load under the actual working conditions is reduced compared with the standard working conditions. Guide the compressor performance design according to the actual working conditions, and test the optimized compressor performance: although the single machine performance decreases under standard conditions, the single machine performance increases by 0.5%~4% under the actual condition of refrigerator, the energy consumption of the whole machine sample selected can be reduced by 2.2%.

Key words: Standard working condition, Actual working condition, Compressor, Efficiency improvement