Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Design of Adiabatic Demagnetization Refrigerator for Hydrogen Re-Liquefaction

수소 재액화용 단열 탈자 냉동기의 설계

  • 박지호 (한국과학기술원 기계공학과) ;
  • 김영권 (한국과학기술원 기계공학과) ;
  • 정상권 (한국과학기술원 기계공학과) ;
  • 김석호 (창원대학교 기계공학과)
  • Received : 2012.06.19
  • Accepted : 2012.09.25
  • Published : 2012.09.30
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Abstract

Adiabatic demagnetization refrigerator (ADR) for hydrogen re-liquefaction operating between 24 K and 20 K has been designed. $Dy_{0.9}Gd_{0.1}Ni_2$, whose Curie temperature is 24 K, is selected as a magnetic refrigerant. The magnetic refrigerant powder is sintered with oxygen-free high purity copper (OFHC) powder to enhance its effective thermal conductivity as well as to achieve relatively high frequency. A perforated plate heat exchanger (PPHE) operated with forced convection is utilized as a heat switch. The forced convection heat switch is expected to have fast response relative to a conventional gas-gap heat switch. A conduction-cooled high Tc superconducting (HTS) magnet is employed to apply external magnetic field variation on a magnetic refrigerant. $2^{nd}$ generation GdBCO coated conductor HTS tape with Kapton$^{(R)}$ insulation (SUNAM Inc.) will be utilized for the HTS magnet. The magnetization and demagnetization processes are to be achieved by the AC operation of the HTS magnet. The designed magnetic field and target ramp rate of the HTS magnet are over 4 T with 180 A and 0.4 T/s, respectively. AC loss distribution on HTS magnet is theoretically estimated.

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References

  1. W. Iwasaki, "Magnetic refrigeration technology for an international clean energy network using hydrogen energy (WE-NET)", Int. J. Hydrogen Energy, Vol. 28, pp. 559-567, 2003. https://doi.org/10.1016/S0360-3199(02)00076-9
  2. 김승현, 장호명, 강병하, "상용 극저온 냉동기를 예냉기로 채택한 수소액화 시스템의 성능 해석", 한국수소 및 신에너지학회논문집, Vol. 9, No. 2, pp. 53-64, 1998.
  3. A. Kitannovski, P. W. Egolf, "Thermodynamics of magnetic refrigeration", Int. J. Refrigeration, Vol. 29, pp. 3-21, 2006. https://doi.org/10.1016/j.ijrefrig.2005.04.007
  4. P. Shirron, E. Canavan, M. DiPirro, J. Francis, M. Jackson, J. Tuttle, T. King, M. Grabowski, "Development of a Cryogen-Free Continuous ADR for the Constellation-X mission", Cryogenics, Vol. 44, pp. 581-588, 2004. https://doi.org/10.1016/j.cryogenics.2003.11.011
  5. K. Kamiya, T. Numazawa, K. Matumoto, H. Nozawa, T. Yanagitani, "DESIGN AND BUILD OF MAGNETIC REFRIGERATOR FOR HYDROGEN LIQUEFACTION", Cryogenic Engineering Conference, Vol. 51, pp. 591-597, 2006.
  6. K. A. Gshneidner, H. Takeyam, J. .O. Moorman, V. K. Pecharsky, S. K. Malik, C. B. Zimm, "NEW MAGNETIC REFRIGERATION MATERIALS FOR THE LIQUEFACTION OF HYDROGEN", Advances in Cryogenic Engineering, Vol. 39, pp. 1457-1465, 1994.
  7. K. Kamiya, H. Takahashi, T. Numazawa, H. Nozawa, T. Yanagitani, "Hydrogen Liquefaction by Magnetic Refrigeration", Cryocooler, Vol. 14, pp. 637-644, 2007
  8. I. Cristescu, I. Cristescu, M. Zamfirache. "Determination of heat transfer coefficients for hydrogen condensation in condensers of various geometries", Int. J. Therm. Sci., Vol. 39, pp. 659-666, 2000. https://doi.org/10.1016/S1290-0729(00)00280-5
  9. E. H. Brant, M. Indenbom, "Type-II-superconductor strip with current in a perpendicular magnetic field", Phys. Rev. B, Vol. 48, pp. 12893-12906, 1993. https://doi.org/10.1103/PhysRevB.48.12893

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