摘要
给出了用来验证上两部分的大量系统试验结果,系统地研究并验证了整机内参数波动特征、压缩活塞与排出器之间的影响关系、冷头温度与调相器间隙对整机性能的影响,同时,以整机运行的冷头最低温度对其运行性能进行了检验,实时测量了各个气动腔内气体压力波动、排出器与活塞运动,这样有助于更加清晰地了解整机内部的工作机制。实验结果表明,试验数据与模拟结果吻合良好。
A set of systematical experiments were carried out in order to validate the simulation model described in the preceding two parts of the study. The parameters fluctuating characteristics in this cooler, influencing relations between the compression piston and the free displacer, and the effects of cold-tip temperatures and phase-adjusting clearance gaps on cooler performances, were intensively investigated. In the meantime, the cooler performances were examined. The minimum coldtip temperature was used as a criteria of refrigeration performance. Real-time measurements of gas pressures in different chambers, displacements of the compression piston and the free displacer, were performed in order to reveal the internal physical processes. The gas pressure has amplitude reduction and phase delay from the compressor to cold chamber.The displacer vidtation system has more complicated influence on the compressor vibration system. The method of the compressor vibration system on the displacer vibration system make gas pressure variation.The experimental results are found to be in good agreement with the simulated ones.
出处
《红外与激光工程》
EI
CSCD
北大核心
2008年第3期428-431,共4页
Infrared and Laser Engineering
关键词
气动分置式斯特林制冷机
狭缝调相器
动态模拟
试验验证
Pneumatically-driven split-Stirling-cycle cryocooler
Clearance-phase-adjustor
Dynamic simulation
Experimental verification
