Title:
Development of SITP’s Large Capacity High Frequency Coaxial Pulse Tube Cryocoolers
Development of SITP’s Large Capacity High Frequency Coaxial Pulse Tube Cryocoolers
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Author(s)
Dang, H. Z.
Wang, L. B.
Wu, Y. N.
Li, S. S.
Yang, K. X.
Shen, W. B.
Fu, H.
Wang, L. B.
Wu, Y. N.
Li, S. S.
Yang, K. X.
Shen, W. B.
Fu, H.
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Abstract
Large capacity high frequency single-stage coaxial inertance pulse tube cryocoolers have been developed and are becoming mature in SITP/CAS. The main objective of the development is to provide larger low-noise cooling powers in the range of 80-100 K for space-borne infrared detector systems. The design and performance optimization approaches are discussed, and the engineering models for them are in work. A split dual opposed piston linear compressor with a maximum swept volume of 8.2 cc is used, and the overall weight without cooler control electronics is below 7.0 kg. At present, the coolers have achieved over 12% of Carnot at 80 K, or 14% of Carnot at 100 K. The typical cooling performance of the coolers provides 5 W at 80 K or 8 W at 100 K with around 120 W of electric input power and a 313 K reject temperature. Approaches to further optimize the thermodynamic performance and detailed characterization tests are underway.
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2008-05
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Proceedings