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Optimum phase angle between pressure and gas displacement oscillations in a pulse-tube refrigerator.

Author(s) : KASUYA M., YUYAMA J., GENG Q., GOTO E.

Type of article: Article

Summary

It is found that the optimum phase angle of piston motion is 142 deg, and that the lowest temperature is 47 K with an operating speed of 1.3 hertz. Gas displacement due to contraction and expansion is suppressed by the piston motion at this optimum phase angle. Since the optimum phase angle is in the range of 90-180 deg, orifice pulse-tube refrigerators cannot achieve optimum phase operation. The improvement achieved with double-inlet pulse-tube refrigerators can be explained by the phase angle versus refrigeration performance relation found in the present experiment.

Details

  • Original title: Optimum phase angle between pressure and gas displacement oscillations in a pulse-tube refrigerator.
  • Record ID : 1994-0007
  • Languages: English
  • Source: Cryogenics - vol. 32 - n. 3
  • Publication date: 1992

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