Development of a Long-Life Stirling Cryocooler
- 1.2k Downloads
A Stirling cryocooler for high temperature superconducting devices has been developed. High efficiency and long lifetime are emphasized in the development. Its performance is 6 W at 70 K with 150 W input under 23°C ambient conditions; at 50°C ambient, it produces 5 W at 70 K with 150 W consumption. The mean time before failure for the design is over 40,000 hours. Flexure springs are used to support the compressor cylinders and the displacer in the cold head to realize this lifetime. The flexure springs are designed using finite element modeling (FEM) to reduce the stress to below the fatigue limit.
KeywordsHigh Temperature Superconducting Fatigue Limit Linear Motor Cooling Power Heat Rejection
Unable to display preview. Download preview PDF.