讨论了制冷器具中制冷剂充注量与制冷量的关系以及系统中各部分制冷剂的状态和数量．提出以计算的方法来确定制冷剂充注量以及单相区、两相区工质数量，并给出了计算公式．采用这一方法可减少充注量优化实验时间，已成功运用于新产品开发 Discusses the relationship between refrigerant charge and cooling capacity in refrigeration equipment and the status and quantity of each part of refrigerant in the system. A calculation method is proposed to determine the charge of refrigerant, the quantity of working fluid in single-phase zone and two-phase zone, and the calculation formula is given. Using this method can reduce the filling time to optimize the experiment time, has been successfully applied to new product development