The two-stage generation is adopted at higher heating temperature in absorption refrigeration system for higher coefficient of performance (COP), but the generation pressure increases to a great extent only with ammonia as refrigerant.

• 在较高的热源温度下 ,吸收制冷系统需采用双效再生流程提高制冷性能系数COP ,从而却使只用氨作为制冷剂的系统再生操作压力大幅度增高。