35K两级高频脉管制冷研究:Ⅱ.实验验证  

Study on high frequency two-stage pulse tube refrigeration at 35K:Part Ⅱ. Experimental verification

作　　者：甘智华[1] 范炳燕[1] 陈杰[1] 许婷[1] 王仁杰[1] 邱利民[1] 

机构地区：[1]浙江大学制冷与低温研究所,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2009年第8期1454-1457,共4页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(50676081)

摘　　要：针对空间35 K温区探测器的冷却需要,结合回热器数值计算软件REGEN3.2的计算分析,自行研制了一台第二级脉管采用低温惯性管和低温气库的热耦合型两级高频脉管制冷机.实验研究了充气压力、工作频率、输入功率等对第二级脉管制冷机性能的影响.实验得到35 K下最佳充气压力为1.26 MPa,最佳工作频率为40 Hz,从而验证了理论计算结果.实验结果表明,在充气压力为1.26 MPa,工作频率为45 Hz,输入功率为135 W的条件下,获得了27.4 K的最低无负荷制冷温度;在充气压力为1.36 MPa,工作频率为40 Hz,输入功率为205 W的条件下,制冷机在35 K获得了0.45 W的制冷量.For the requirements of detectors cooling at 35 K in space application, based on the calculation and analysis from the regenerator simulation software known as REGEN 3.2, a self-designed two-stage Stirling-type pulse tube cryocooler （PTC） for 35 K with cold inertance tube and cold reservoir at the sec- ond stage was manufactured and tested. Experiments on the effects of charging pressure, frequency, input power on the performance of the second stage PTC were carried out. The optimum charging pressure of 1.26 MPa and the optimum frequency of 40 Hz for 35 Ⅱ were obtained, which agreed well with the theoretical calculation. The lowest no-load temperature of 27.4 K with the charging pressure of 1.26 MPa and the frequency of 45 Hz together with 135 W input power was obtained. The cooling power of 0.45 W at 35 K with the charging pressure of 1.36 MPa and the frequency of 40 Hz was also obtained with an input electric power of 205 W.

关 键 词：高频脉管制冷机 低温惯性管 回热器 低温制冷机 

分 类 号：TB651[一般工业技术—制冷工程]