Experimental study on high temperature adaptability in a miniature Stirling cooler
With the wide application of HOT infrared detectors,many applications require the miniature Stirling cooler to operate in a high temperature environment above 70 ℃,which challenges the high temperature adaptability of the cooler.Based on the study of high temperature adaptability of pneumatic Stirling refrigerator.Through the analysis of the change law of imped-ance and regenerator loss at high temperature,the influence of high temperature on inflation pressure and resonant frequency,as well as the relationship between regenerator screen parameters and high temperature adaptability was studied.The results show that the ambient temperature increases,the gas pressure and the resonant frequency increase.Reducing the porosity properly can reduce the flow resistance loss of the regenerator at high temperature and improve the refrigeration efficiency.The research in this paper has a certain reference value for improving the thermal environment adaptability of Stirling cooler.
Stirling coolerHigh temperature adaptabilityLossExperimental research
NETL
NSTL
万方数据
