Performance Investigation on SITP’s 60 K High Frequency Single-Stage 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.
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Abstract
A series of 60 K high frequency single-stage coaxial pulse tube cryocoolers has been developed to provide reliable low-noise cooling at 60 K for space-borne long wave infrared focal plane arrays. The development goal and a simulation model are briefly introduced, then optimizations of the novel heat exchanger configurations, the temperature mismatch of the tubes, and the characteristics mismatch of the compressor and cold finger are described. Experiments show that our best cooler prototype has achieved 8.0% of Carnot at 60 K, and can typically provide 2 W at 60 K with 104 W of electric input power and a 300 K reject temperature. It is also shown that 2.5W of cooling capacity at 60K can be achieved when the input power is increased to 127 W. Further optimization is underway, and it is feasible that the thermodynamic performance goal can be realized in the near future.
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2008-05
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