-120℃空气制冷深冷冰箱样机开发及性能测试  

Development and performance testing of a prototype of refrigerator at-120℃

作　　者：宋书建 陈双涛[1,2] 周晓聪 陈良 侯予[1,2] Song Shujian;Chen Shuangtao;Zhou Xiaocong;Chen Liang;Hou Yu(School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China;MOE key Laboratory of Cryogenic Technology and Equipment,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]西安交通大学能源与动力工程学院,西安710049 [2]深低温技术与装备教育部重点实验室,西安710049

出　　处：《低温与超导》2024年第7期1-6,共6页Cryogenics and Superconductivity

基　　金：国家自然科学基金(U21B2084)资助。

摘　　要：为了验证以电驱透平膨胀-压缩一体机为核心部件的闭式逆布雷顿空气制冷系统在深冷冰箱中应用的可行性,探究闭式空气制冷系统在深冷冰箱温区的工作特性,本文开发了制冷量为200 W制冷温度为-120℃的空气制冷深冷冰箱原理样机,开展了该原理样机降温过程及不同热负荷条件下的变工况特性研究。结果表明:所开发的空气制冷深冷冰箱系统运行可靠,降温速率快,系统满功率运行降温至-100℃耗时仅3 h,最低制冷温度达-126℃;系统在设计制冷温度-120℃下制冷量约215 W,同时系统COP为0.08。In order to validate the feasibility of a closed-cycle reverse Brayton air refrigerator equipped with the motor-driven turbo-expander-compressor in the application of low-temperature refrigerators,and to investigate the operating characteristics of the closed-cycle air refrigeration system in the low-temperature refrigerator,this paper developed a prototype of an air-refrigeration low-temperature refrigerator with 200 W cooling capacity design at-refrigeration temperature of-120℃.A study of the cooling-down process and off-design characteristics under different heat load conditions was carried out on the prototype.The results show that the system operates reliably and cools down at a fast rate.It takes only 3 hours for the system to run at full power to cool down to-100℃,and the lowest refrigeration temperature reaches-126℃.The system achieves a cooling capacity of about 215 W and a system COP of 0.08 at the design refrigeration temperature of-120℃.

关 键 词：深冷冰箱 逆布雷顿循环 空气制冷 高速透平 

分 类 号：TB618[一般工业技术—制冷工程] TB653