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。
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.
出处
《制冷学报》
CAS
CSCD
北大核心
2013年第4期10-13,共4页
Journal of Refrigeration
基金
国家重大基础研究计划(2010CB227304)
国家自然科学基金(50976097)资助项目~~
关键词
低品位热源
冷冻干燥
节能
氯化锂溶液
low-grade heat source
freeze drying
energy saving
LiC1 solution
