A study on the in-line type inertance tube pulse tube cryocooler for cooling Superconductor filter

  • 발행 : 2004.11.01

초록

The Experimental results of the in-line type inertance tube pulse tube cryocooler for cooling superconductor RF filter are presented in this paper. The pulse tube refrigerator, which has no moving parts at its cold section, is attractive in obtaining higher reliability, simpler construction, and lower vibration than any other small refrigerators. The purpose of this study is to analyze the characteristics of in-line type inertance tube pulse tube refrigerator (IPTR), and to get main factor to improve the performance of the in-line type IPTR. Firstly, design parameters of the in-line IPTR are discussed by ARCOPTR program, and then to find optimal conditions of in-line type IPTR, cool down characteristics according to the variations of the charging pressure, inertance tube volume, regenerator volume and pulse tube volume are measured by the experiment. The lowest temperature of the cold end was about 50 K. Cooling capacity was the highest in the charging pressure of 32 atm. and 5W at 72K. On the other hand, COP of the in-line type IPTR was the highest in the charging pressure of 21 atm. and 0.018 at 77K.

키워드

참고문헌

  1. Gifford, W. E. and Longsworth, R. C., Pulse Tube Refrigeration, Trans. ASME J. of Eng. for Industry, Paper No. 63-WA-210 (1964)
  2. Mikulin, E. I., Tarasov, A. A. and Shkrebynock, M. P., Low Temperature Pulse Tube Refrigeration, Adv. in Cryogenic Engineering, Vol. 29 (1984), pp. 629-637
  3. Radebaugh, R., Zimmerman, J., Smith, D. R., and Louie, B., A comparison of three types of pulse tube refrigerators: new methods for reaching 60K, Adv. Cryogenic Engineering, Vol. 31 (1986), p.779
  4. Zhu, S. et aI., (1990), Double inlet Pulse Tube Refrigerators: An Important improvement, Cryogenics, 30, 514-520
  5. Pat R. Roach and Ali Kashani, (1990), Pulse Tube Coolers with an Inertance Tube: Theory, Modeling and Practice, Advances in Cryogenic Engineering, 43,1895-1902
  6. Zhu, S. W., Zhou, S. L., Yoshimura, N. and Matsubara, Y., 'Phase Shift Effect ofthe Long Neck Tube for the Pulse Tube Refrigerator', Cryocoolers 9 (1997), pp. 269-278
  7. de Boer, P. C. T., 'Performance of the inertance pulse tube', Cryogenics, Vol. 42 (2002), pp. 209-221
  8. Ravikumar, K. V. and Matsubara, Y., 'Experimental results of pulse tube cooler with inertance tube as phase shifter', Cryocoolers 10 (1999), pp. 291-298