【摘要】 本文研究了制冷剂充注量及阀开度对带有气液分离器的CO₂汽车空调系统性能的影响,通过可视化的气液分离器观察在不同充注量下罐子里面的液位高低,研究了气液分离器对于系统性能的影响。研究发现充注量在1,100～1,500 g系统状态相对稳定,出现平台期。在不同充注量下,阀开度对高低压和系统性能的影响研究表明,低充注量下（400～1,000 g）,阀开度对低压影响较大;高压充注量下（1,600 g以上）,阀开度对高压的影响较大。更多还原

【Abstract】 The influences of refrigerant charge and valve opening on performance of CO₂ automobile air-conditioning system with gas-liquid separator are studied in this paper. Visualized gas-liquid separator is used to observe the liquid level in different charge, and the effect of gas-liquid separator on system performance is studied. It is found that the system state is relatively stable as the refrigerant charge is within between 1,100-1,500 g, and the platform period appears. The research results on the effect of valve opening on pressure and system performance under different charges show that, the valve opening with low charge（400-1,000 g） has a great influence on low pressure, and the valve opening with high charge（larger than 1,600 g） has a great influence on high pressure.更多还原