• Home page
  • Publications

  • Computational fluid dynamics simulations and ex...

IIR document

Computational fluid dynamics simulations and experimental investigations on a 1-2 K Joule-Thompson cryocooler precooled by a three-stage Stirling-type pulse tube cryocooler.

Number: pap. n. 1063

Author(s) : ZHANG T., ZHA R., TAN J., et al.

Summary

The temperature of 1-2 K is crucial to the low-Tc superconducting and deep space exploration. The Joule-Thomson (JT) cryocooler coupled with a three-stage Stirling-type pulse tube cryocooler (SPTC) is an effective way of achieving the required low temperature and high efficiency. In this paper, a computational fluid dynamics (CFD) model is established for the JT cryocooler, in which the flow and heat transfer processes are simulated and analyzed. The distributions of precooling capacities are optimized by analyzing exergy losses caused by heat transfer. The effects of the three stage precooling temperatures, the precooling capacities and the high pressure before the JT valve on the cooling performance are also studied in depth. The no-load temperatures of 2.2 K and 1.42 K are achieved in the model with He-4 and He-3 as working fluids, respectively. The corresponding experimental verifications are underway.

Available documents

Format PDF

Pages: 8

Available

  • Public price

    15 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Computational fluid dynamics simulations and experimental investigations on a 1-2 K Joule-Thompson cryocooler precooled by a three-stage Stirling-type pulse tube cryocooler.
  • Record ID : 30025923
  • 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.2019.1063

Links


See other articles from the proceedings (632)
See the conference proceedings