压缩强化解吸的新型吸附制冷系统性能研究  

Investigation of a Novel Compression-assisted Decomposition Chemisorption Refrigeration System

作　　者：胡皓 高鹏 金胜祥 武卫东[1] 杨其国 Hu Hao;Gao Peng;Jin Shengxiang;Wu Weidong;Yang Qiguo(School of Energy and Engineering,University of Shanghai for Science and Technology,Shanghai,200093,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《制冷学报》2022年第6期130-137,共8页Journal of Refrigeration

基　　金：上海市青年科技英才扬帆计划(20YF1431400)资助

摘　　要：本文提出了压缩强化解吸的新型吸附制冷系统,该系统采用耦合压缩抽气降压技术降低吸附剂解吸压力和解吸温度,同时吸附剂解吸反应可提高压缩机吸气压力、减小压缩机功耗、提升制冷能效。同时搭建了以氨为制冷剂、氯化锶/硫化膨胀石墨作为吸附剂的固化复合吸附单元管性能测试实验台,进行不同工况下的解吸、吸附反应耦合性能测试。结果表明:该新型系统可在热源温度为70~90℃下进行吸附制冷;在蒸发温度为-10℃、热源温度为90℃时,新型系统最佳解吸压力为0.62 MPa、压缩机压比为2.60、制冷能效COP_(elec)(制冷量/电耗)为5.21,相比于氨蒸气压缩制冷系统,制冷能效提高74%。A novel compression-assisted decomposition chemisorption refrigeration system is proposed to reduce the desorption pressure and temperature and increase the suction pressure of the compressor,which may contribute to the reduction of the power consumption of the compressor and increase the coefficient of performance(COP)of the system.A solidified composite sorbent performance test platform was built,which used ammonia as the refrigerant,and strontium chloride with expanded natural graphite treated with sulfuric acid was used as the sorbent.The decomposition and sorption reactions of the composite sorbents were tested under different working conditions.The results demonstrate that the novel system decomposed at the heat source temperature of 70-90℃.At an evaporation temperature of-10℃and a heat source temperature of 90℃,the optimal desorption pressure of the novel system was 0.62 MPa.The compressor pressure ratio was 2.60.The COP of the novel system was 5.21,which is 74%higher than that of traditional vapor compression refrigeration systems.

关 键 词：吸附制冷 蒸气压缩制冷 压缩强化解吸 固化复合吸附剂 

分 类 号：TB66[一般工业技术—制冷工程] TB611