Development of high-capacity U-type pulse tube cryocoolers for a cold optics system in space applications

H. Z. Dang; S. S. Li; L. B. Wang; K. X. Yang; W. B. Shen; Y. N. Wu

doi:10.1117/12.850089

3 May 2010 Development of high-capacity U-type pulse tube cryocoolers for a cold optics system in space applications

H. Z. Dang, S. S. Li, L. B. Wang, K. X. Yang, W. B. Shen, Y. N. Wu

Proceedings Volume 7660, Infrared Technology and Applications XXXVI; 76602R (2010) https://doi.org/10.1117/12.850089
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

A robust U-type pulse tube cryocooler has been developed to replace the heavy and cumbersome passive radiator system for cooling the cold optics component of a sophisticated infrared sensors system used in a weather satellite. The U-type other than coaxial arrangement is chosen to obtain a robust and simple system, and also to avoid the potential loss introduced by the possible mismatch of the temperature profiles of pulse tube and regenerator as well. Besides the conventional integral "U"-shaped cold tip, a novel detachable two-half cold head is designed to enhance cooling performance. Some fine grooves are engraved in the cold head using electro discharge machining technology, which can not only increase the heat transfer area, but also serve as a straightener for the turbulence introduced by the flow reversal. The cooler is powered by a 7.5 cc dual opposed piston compressor and the overall weight is less than 11 kg. It can lift over 8.0W of heat at 150K with 87 W of electric input power and at 310 K of reject temperature. The design considers, experimental results, and performance analyses are presented.

Citation Download Citation

H. Z. Dang, S. S. Li, L. B. Wang, K. X. Yang, W. B. Shen, and Y. N. Wu "Development of high-capacity U-type pulse tube cryocoolers for a cold optics system in space applications", Proc. SPIE 7660, Infrared Technology and Applications XXXVI, 76602R (3 May 2010); https://doi.org/10.1117/12.850089

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