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Numerical modeling and experimental investigations on a 18 kW Oxford-type moving-coil linear compressor.

Number: pap. n. 967

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

Summary

To achieve a moving-coil linear compressor with the electric input capacity higher than 10 kW is a huge challenge. This paper presents the numerical modelling and experimental investigations on an Oxford-type dual-opposed moving-coil linear compressor with the electric input capacity of 18 kW. A numerical model is established in which systematic analyses about force balance and magnetic circuit are conducted. Optimizations on geometries of the magnet circuit, moving coil and air gap are focused on to enhance the input capacity and also to optimize the motor efficiency. The compressor prototype is developed experimentally, and experimental results are compared with the theoretical analyses. The developed compressor is then coupled with a pulse tube cold finger. At present, experimental results show that the cooler can provide 720 W at 77 K with an electric input power of 16.2 kW for cooling the high-Tc superconducting facilities.

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Pages: 9

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Details

  • Original title: Numerical modeling and experimental investigations on a 18 kW Oxford-type moving-coil linear compressor.
  • Record ID : 30025917
  • 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.2019.0967

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