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IIR document

Study of refrigeration characteristics of slush nitrogen in flow system.

Number: pap. n. 042

Author(s) : NAKAMURA N., KOMAGOME T., LEE Y., et al.

Summary

Slush nitrogen (SN2), mixture of liquid nitrogen (LN2) and solid nitrogen particles with the characteristic temperature of 63.1 K allows more heat load and larger temperature rise in HTS cable system than LN2. The authors have confirmed the advantages of SN2 by calculation, showing that SN2 effectively suppress temperature rise in HTS cable. To examine these favourable properties of SN2 at laboratory level they have developed an SN2 generator and set up a small scale SN2 cooling system, with which they succeeded in flowing the refrigerant at about 63 K. The authors are going to measure the density of SN2 (the amount of flowing solid nitrogen) and quantitatively study the refrigeration characteristics of SN2. In this paper, they discuss our SN2 cooling system and the calculational and experimental results for refrigeration characteristics.

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Pages: 91-96

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Details

  • Original title: Study of refrigeration characteristics of slush nitrogen in flow system.
  • Record ID : 30005427
  • Languages: English
  • Source: Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
  • Publication date: 2012/09/11

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