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气液分离器是重力供液系统关键的部件之一。为了揭示分散相在气液分离器中的分离机理,应用液滴动力学理论,对分散相在连续相中的受力和运动进行了分析,同时考虑了制冷系统气液分离器内部稳定流速的限制。分析表明:制冷系统中制冷剂气液两相重力分离过程基本处于Allen区;可忽略沉降过程中的重力加速效应,重力加速过程产生的位移很小,对于计算结果不会引起较大偏差;并以制冷剂R404A为例,得出了不同沉降区液滴粒径范围。
Gas-liquid separator is one of the key components of gravity feeding system. In order to reveal the separation mechanism of the dispersed phase in the gas-liquid separator, the force and movement of the dispersed phase in the continuous phase were analyzed by using the droplet dynamics theory. The steady flow velocity inside the gas-liquid separator limit. The analysis shows that the gas-liquid two-phase gravity separation process of the refrigerant in the cooling system is basically in the Allen zone; the acceleration due to gravity in the process of settlement can be neglected, and the displacement caused by the gravity acceleration process is small, Taking refrigerant R404A as an example, the droplet size range of different settlement areas is obtained.