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Computational fluid dynamics modeling and experimental verification of a Stirling-type pulse tube cryocooler with a cooling capacity of 700 W at 77 K.

Number: pap. n. 975

Author(s) : LI J., TAN J., ZHAI R., et al.

Summary

This paper presents the computational fluid dynamics (CFD) modeling and optimization of a SPTC with a cooling capacity of 700 W at 77 K for cooling large-scale high-Tc superconducting facilities. This SPTC consists of two cold fingers driven by an 18 kW linear compressor. A two-dimensional CFD model is established to investigate the flow and heat transfer process inside the regenerator. For the aimed high cooling capacity, the flow straighteners become crucial to minimize the turbulence flows in the system. The distribution of temperature in the regenerator is non-uniform due to the flow conditions, which makes the optimization more difficult. The SPTC is worked out based on the theoretical analyses. The cooling capacity of 700 W at 77 K with a relative Carnot efficiency of 11.3% has been achieved experimentally, slightly lower than the simulated 13%.

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Pages: 8

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Details

  • Original title: Computational fluid dynamics modeling and experimental verification of a Stirling-type pulse tube cryocooler with a cooling capacity of 700 W at 77 K.
  • Record ID : 30025918
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0975

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