《CaCl2 BaCl2 NH 3 二级吸附式制冷系统及 其制冷性能与仿真》.pdfVIP

45 9 上 海 交 通 大 学 学 报 Vol. 45 No. 9 20119 JOURNAL OF SH ANGH AI JIAOT ONG UNIVERSIT Y Sep. 2011 : 2011) 091 8906 CaCl BaCl NH 2 2 王 健, 胡远扬, 王丽伟, 王如竹 ( , 200240) : 在低于100C热源高于 0 C冷凝温度的条件下, 为 获得- 15 C的冷冻工况, 采用二级 解吸过程设计 氯化钙/ 氯化钡吸附氨的吸附制冷系统, 并对氯化钙/ 氯化钡工质对的吸附性能参 数进行测试, 由其性能数据拟合而得到吸附与解吸曲线耦合吸附与解吸方程和传热方程, 并建立 系统模型进行仿真. 结果表明, 该系统可以利用85 C的低温热源, 在 0 C的冷凝温度条件下获得 - 15 C的制冷温度, 并达到2. 62 kW 的制冷功率. : 氯化钙; 氯化钡; 二级吸附式制冷; 低温热源; 仿真 : T K 172 : A Experiments on Adsorpt ion Performance and Simulat ion on Freezing System for CaCl2BaCl2NH TwoStage Adsorption WA N G J ian, H U Yuany ang , WA N G L iw ei , WA N G Ruz hu ( Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiaotong U niversity , Shanghai 200240, China) Abstract In order to achieve freezing condition under - 15 C w hile the heating source temperature is low er than 100 C and the condensing temperature is higher than 0 C, a CaCl2BaCl2NH adsorption refrige ration system w as designed w ith tw ostage desorption cycle. A series of experiments w ere performed on tw ostage adsorption test unit in order to get the adsorption and desorption data of the composite absorb ents, w hich are the mixture of salt chloride and expanded graphite. By fitting the data into adsorption and desorption curve, w e set a mathematic model of the system by combining the adsorption and desorption e quations and heat transfer equations of the system. The performance of the system w as simulated and the results show that the system is able to use 85 C heating source for the output of - 15 C freezing tempera ture, w hen the condensing temperature is 0 C. T he cooling capacity of the system simulated is 2. 62 kW.