以膨胀硫化石墨为基质的氯化钙/氯化钡-氨两级复合吸附式制冷循环实验研究  

Experimental Study on the CaCl_2/BaCl_2-NH_3 Two-stage Chemisorption Refrigeration Cycle based on the Matrix of Expanded Natural Graphite Treated with Sulfuric Acid

作　　者：刘金亚 朱芳啟 江龙[1] 王丽伟[1] 高鹏[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240

出　　处：《制冷学报》2017年第2期51-56,共6页Journal of Refrigeration

基　　金：国家科学基金(51576120);国家自然科学基金创新研究群体科学基金(51521004);中国博士后科学基金(15Z102060060)资助项目~~

摘　　要：相对于单级吸附式制冷,两级吸附式制冷对热源温度和环境冷却温度适用范围更广。本文采用膨胀硫化石墨为基质,研制了氯化钙/氯化钡-氨两级吸附式制冷系统并进行了实验研究。吸附床采用传热传质强化后的新型固化吸附剂,利用新型非翅片式填充方式,有效降低了吸附系统的质量,增加了紧凑性。结果表明:两级吸附式制冷系统可以很好地适应热源温度低于100℃的工况,其性能在多数工况下高于单级吸附式制冷,系统COP与SCP随氯化钙解吸时间先增加后减小,COP最大可达0.27,SCP最大可达132.5 W/kg。Compared with single-stage chemisorption refrigeration, two-stage chemisorption refrigeration has a wider range of application in heat source temperature and environmental temperature. In this paper, solid sorbents with the matrix of expanded natural graphite trea- ted with sulfuric acid are developed, and the CaCl2/BaCl2 -NH3 two-stage chemisorption refrigeration system is studied and experiments are carried out. Solid sorption beds use the novel consolidated sorbent with enhanced heat and mass transfer performance. Because the sorption beds adopt a new way of non-finned filling technique, the weight of the chemisorption system decreases and the compactness of the system increases. The experimental results show that two-stage chemisorption refrigeration system can well adapt to the operation condition of the heat source temperature below 100 ℃, and its performance is better than that of single-stage ehemisorption refrigeration under most working conditions. The COP and SCP of system increase first and then decrease with the increase of desorption time of CaCl2 bed. The highest COP is 0.27 while the best SCP is 132.5 W/kg.

关 键 词：吸附式制冷 两级循环 新型固化吸附剂 非翅片式吸附床 

分 类 号：TB66[一般工业技术—制冷工程] TK124[动力工程及工程热物理—工程热物理]