中文摘要：

对一种低品位热源驱动的冷冻干燥装置进行了理论分析，该装置中冷阱采用连续可再生的氯化锂溶液，制冷系统为氨水吸收式。热力学理论分析表明，在我国华东地区夏季工况下，使用该装置冻干共晶点温度在-10-35℃之间的物料时，每脱除1kg水分可以有效利用13573—20747kJ的低品位热量，与传统的真空冷冻干燥机相比，节能潜力显著。

英文摘要：

Theoretical analysis is made for a freeze dryer driven by low-grade heat source. Its condenser utilizes LiC1 solution which is continuously regenerated, and its refrigeration system adopts ammonia-water absorption type. Through thermodynamic analysis, it is dem- onstrated that 13573-20747kJ heat is needed for the removal of lkg water from the material which eutectic temperature varies between - 10 and -35℃, if the freeze dryer is used in summer in east China. The energy saving potential is thus significant.