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Further developments on a vibration-free helium-hydrogen sorption cooler.

Author(s) : BURGER J. F., HOLLAND H. J., MEIJER R. J., et al.

Summary

In the authors' continuous effort on the development of a passively precooled two-stage 4.5-14.5 K helium-hydrogen sorption cooler, a number of important development steps were made. Firstly, an improved high-density activated carbon was used for the fabrication of four new sorption cells. Tests with these new cells showed that because of increased efficiency, the hardware changes, the cold temperature was reduced from 4.5 to 3.1 K. Thirdly, long-term experiments were carried out on the cooler. In two separate periods of two and four months of clogging effects were analyzed that occurred after a 15 months storage period of the cooler at prevented. Finally, a design of an integrated compact cooler chain was presented, which consists the future to test the sorption cooler technology in a zero-gravity environment. of a 50 K Stirling cooler and the helium-hydrogen sorption cooler. This package may be used in 300 K. The authors concluded that hydrogen diffusion out of the stainless steel components should be prevented. Finally, a design of an integrated compact cooler chain was presented, which consists the future to test the sorption cooler technology in a zero-gravity environment. of a 50 K Stirling cooler and the helium-hydrogen sorption cooler. This package may be used in the future to test the sorption cooler technology in a zero-gravity environment.

Details

  • Original title: Further developments on a vibration-free helium-hydrogen sorption cooler.
  • Record ID : 2010-0357
  • Languages: English
  • Publication date: 2009
  • Source: Source: Proc. 15th int. Cryocooler Conf., Boulder, CO/Cryocoolers 15
    8 p.; fig.; photogr.; tabl.; 6 ref.

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