Mixed cryogen cooling systems for HTS power applications: A status report of progress in Korea University

Jung Bin Song, Haigun Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)


A cooling system employing a solid cryogen (SC), such as solid nitrogen (SN2), was recently reported for high-temperature superconducting (HTS) applications. However, thermal contact between the SC and the HTS can be degraded by repeated overcurrent runs, resulting in 'thermal dry-out'. Novel cryogens, SC with small amounts of liquid cryogen, have been suggested to overcome this problem. Such cooling systems rely on the small amount of liquid cryogen to facilitate heat exchange so as to fully exploit the heat capacity of the solid cryogen. This paper presents a description and summary of recent activities at Korea University related to cooling systems employing mixed cryogens of solid-liquid nitrogen, solid argon-liquid nitrogen, and solid nitrogen-liquid neon.

Original languageEnglish
Pages (from-to)648-655
Number of pages8
Issue number12
Publication statusPublished - 2012 Dec 1



  • Cooling system
  • High temperature superconducting
  • Mixed cryogen
  • Solid cryogen
  • Thermal dry-out
  • YBCO coated conductor

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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