Open AccessBasic research of HTS coil cooling assist technology by magnetic refrigeration
Author(s) -
Naoki Hirano,
S. Nagai,
Yunzhi Xie,
Tomonori Okamura
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1559/1/012090
Subject(s) - cryostat , refrigerant , refrigeration , electromagnetic coil , magnetic field , magnetic refrigeration , materials science , refrigerator car , water cooling , nuclear engineering , mechanical engineering , cooling capacity , leakage (economics) , electrical engineering , nuclear magnetic resonance , superconductivity , engineering , physics , condensed matter physics , heat exchanger , magnetization , quantum mechanics , economics , macroeconomics
The fundamental research of HTS coil cooling assist technology by magnetic refrigeration has been studied. Using magnetic refrigeration technology, we are focusing on numerical analysis to see if the cooling efficiency around 20 K of high-temperature superconducting coils can be enhanced. The feature of the proposed cooling method is that it utilizes the leakage magnetic field from the HTS coil. Magnetic refrigeration technology needs to apply a change of magnetic field to a certain type of magnetic material, and the configuration of applying a change of magnetic field to the material in the cryostat is the point of the proposed cooling assist method. We confirm a system that uses a magnetic refrigerator in combination with a refrigerant circulation cooling system by utilizing the leakage magnetic field generated when using a superconducting coil and producing a magneto caloric effect has higher refrigeration performance than the refrigerant circulation cooling system alone.