摘要
进行了驻波型热声发动机驱动两级脉管的制冷特性实验,样机获得41.2 K的无负荷制冷温度。通过观测热声板叠热端和冷端温度、压力波的振幅、压比和频率,以及脉管制冷机制冷温度等,分析了平均工作压力和加热功率对系统性能的影响。根据实验数据,讨论了系统存在的问题,并指出了改进的方向。
A two-stage pulse tube cryocooler driven by a standing wave thermoacoustic engine was made and tested, which reaching a no-load cooling temperature of 41.2 K. Based on measurement and observation of hot and cold end temperature of stack, pressure amplitude, pressure ratio, frequency and cooling temperature, analysis was focused on influences of operating parameters as mean working pressure and heating power input on system＇ s performance. Existing problems were discussed according to experiment data and possible modifications for performance improvement were also pointed out.
出处
《低温工程》
CAS
CSCD
北大核心
2008年第4期1-5,共5页
Cryogenics
基金
国家自然科学基金(50536040
50776075)
浙江省自然科学基金(Y107229)
教育部留学回国人员科研启动基金资助
关键词
热声学
热声发动机
驻波
脉管制冷机
多级制冷
thermoacoustics
thermoacoustic engine
standing wave
pulse tube cryocooler
multistage refrigeration
