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Development and characterization of a centrifugal pump for low-loss liquid helium transfer.

Number: 148

Author(s) : DÖLL J., KLÖPPEL S., HABERSTROH C.

Summary

At research institutes, liquid helium is supplied in mobile dewars, filled by pressurization of the storage dewar. To reduce the evaporation losses significantly, a pump can be installed. In this article, a prototype of a submersible centrifugal pump is comprehensively investigated by varying process parameters such as shaft speed and sealing gap. The measurements were performed with a single flow transfer line during a standard filling process of dewars, used for the laboratory supply at the TU Dresden. The pump characteristics show wide operating ranges with efficiencies above 50% and peak efficiencies over 80% at high-speed operation. A significant reduction in filling losses and time compared to the traditional process could be demonstrated. 

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Pages: 7 p.

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Details

  • Original title: Development and characterization of a centrifugal pump for low-loss liquid helium transfer.
  • Record ID : 30031065
  • Languages: English
  • Source: Proceedings of the 17th IIR International Conference on Cryogenics, Dresden, Germany, april 25-28 2023
  • Publication date: 2023/04/25
  • DOI: http://dx.doi.org/10.18462/iir.cryo.2023.0148

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