| 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。 |
| 关键词: 低品位热源 冷冻干燥 节能 氯化锂溶液 |
| DOI： |
| 投稿时间：2012-07-02
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| 基金项目:国家重大基础研究计划（2010CB227304)及国家自然科学基金（50976097)资助项目 |
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| Theoretical analysis of freeze-drying apparatus driven by low-grade heat source |
| Niu Meimei,Zhang Shaozhi,Hong Daliang,Chen Guangming |
| (Refrigeration and Cryogenic Engineering Institute, Zhejiang University) |
| Abstract: |
| Theoretical analysis is made for a freeze dryer driven by low-grade heat source. Its condenser utilizes LiCl solution which is continuously regenerated, and its refrigeration system adopts ammonia-water absorption type. Through thermodynamic analysis, it is demonstrated that 13573~20747kJ heat is needed for the removal of 1kg 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. |
| Key words: Low-grade heat source Freeze drying Energy saving LiCl solution |
