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Numerical and experimental study on the characteristics of 4 K gas-coupled Stirling-type pulse tube cryocooler.

Author(s) : CHEN L., WU X., LIU X., et al.

Type of article: Article, IJR article

Summary

A novel gas-coupled Stirling-type pulse tube cryocooler (SPTC), coupling with a colder-stage at the cold head of pre-cooling stage, has been presented, which features extremely compact structure. The gas-coupled characteristics, such as interaction of phase distribution, mass flow distribution and available energy regenerator loss, have been numerical and experimental studied. A negligible phase interaction is found between the two gas-coupled stages, which means the phase of each stage can be optimized individually. The colder-stage regenerator material diameter has a significant effect while its inertance tube size has a weak effect on mass flow distribution. The sphere-type colder-stage regenerator has a different available energy loss mechanism with the mesh-type regenerator of pre-cooling stage. At present, the prototype achieves a no-load temperature of 4.94?K. A cooling power of 12.4?mW/6?K can be achieved with an input power is 270?W and a precooling power of 12.43?W/77?K.

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Pages: 204-210

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Details

  • Original title: Numerical and experimental study on the characteristics of 4 K gas-coupled Stirling-type pulse tube cryocooler.
  • Record ID : 30023522
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 88
  • Publication date: 2018/04
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2018.01.010

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