丙纶填充式回热器单级脉管制冷机性能研究  

Thermal performance analysis of a pulse tube refrigerator with the polyester fiber filled regenerator

作　　者：阚安康[1,2] 吴亦农[1] 张安阔[1] 刘少帅[1] 蒋珍华[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]上海海事大学商船学院,上海201306

出　　处：《低温工程》2016年第2期20-25,共6页Cryogenics

基　　金：上海市自然基金资助项目(15ZR1419900)

摘　　要：采用丙纶纤维作为回热器新型填充介质,对单级脉管制冷机进行了试验研究。对丙纶微尺度空间结构及物理性能进行了分析,基于充气压力分别为3.5、3.0、2.8、2.5、2.0、1.5 MPa的工况下,进行了降温性能、频率性能、制冷性能试验,获取了最低制冷温度,最佳工作频率及最大比卡诺效率。研究结果表明,充气压力对丙纶填充回热器的制冷机整体性能影响较大,工作频率的影响不是很明显。最终获得了最大比卡诺效率9.46%@170 K/10.06 W/77 W,最大制冷量为5.47 W@120 K/2.5 MPa,12.02 W@150 K/3.0 MPa,16.49 W@170 K/3.0 MPa,并获得了96.4 K的最低制冷温度。Fine fibrous Polyester was selected as new filled material for regenerator, and experimental study was taken on a single-stage pulse tube cryocooler. The microstructure and physical parameters of the fibrous material were studitd. Based on helium charge pressure respectively under the condition of 3.5,3.0, 2.8,2.5,2.0,1.5 MPa, the thermal performances of temperature dropping, working frequency and cooling were tested. The lowest refrigeration temperature, the optimum working frequency, maximum cooling capacity and the maximum percent of Carnot efficiency were obtained and analyzed. The charge air pressure has a profound effect on the thermal performance of the pulse tube cryocooler but the working frequency has a slightly effect on it. The maximum percent of Carnot efficiency9.46% @ 170 K/10.06 W/77 W,the maxi- mum cooling capacity 5.47 W@ 120 K/2.5 MPa, 12.02 W@ 150 K/3.0 MPa, 16.49 W@ 170 K/3.0 MPa, and the lowest refrigeration temperature 96.4 K were obtained in the experiment.

关 键 词：脉管制冷机 回热器 丙纶纤维 制冷性能 试验研究 

分 类 号：TB651[一般工业技术—制冷工程]