CaCl_2/NaBr/NH_3二级化学吸附循环的实验研究  

Experiment Research on Two-Stage Chemical Adsorption Cycle With CaCl_2/NaBr/NH_3

作　　者：罗伟莉[1] 王丽伟[1] 王健 王如竹[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所,动力机械与工程教育部重点实验室,上海200240 [2]中航工业燃气涡轮研究院,四川成都610500

出　　处：《工程热物理学报》2013年第3期414-418,共5页Journal of Engineering Thermophysics

基　　金：国家优秀青年科学基金项目(No.51222601);上海市科委国际合作项目(No.11160706000)

摘　　要：采用由吸附制冷过程与再吸附过程组成的二级化学吸附冷冻循环系统。再吸附过程能够解决热源温度和环境温度限制的问题。将CaCl_2/NaBr/NH_3作为工质对,测试不同蒸发温度与环境温度下吸附剂的吸附性能。实验结果和性能预测表明:复合吸附剂的密度为400 kg·m^(-3)时,理论COP的范围为0 256～0 277。在热源温度90℃,冷凝温度25℃,蒸发温度5℃时,SCP最大为267.9 W·kg^(-1)。在测试工况下,氯化钙的最大吸附量0.808 kg^(-1),超过了理论吸附量的87%。Adsorption refrigeration process and resorption process comprise the two-stage chemical adsorption freezing cycle system. Resorption process can solve the problems of the restriction on the heat source temperature and the ambient temperature. Adsorption properties are obtained by the testing on different evaporation temperature and environmental temperature with the working pair of CaCl2/NaBr/NH3. The test results indicated that the theoretical COP is at the range of 0.256- 0.277 when the density of the composite adsorbent is 400 kg.m-a. And the maximum SCP is about 267.9 W-kg at the conditions of heat source temperature of 90℃, condensing temperature of 25℃ and evaporation temperature of 5℃. The maximum adsorption uptake of CaCl2 is 0.808 kg·kg-1, which is over 87% of the theoretical adsorption amount.

关 键 词：化学吸附 二级吸附 低温热源 制冷性能 

分 类 号：TB611[一般工业技术—制冷工程] TK511.3[动力工程及工程热物理—热能工程]