2024-03-28T15:16:00Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00007467
2023-01-16T03:52:58Z
320:321:322
Electrical and thermal characteristics of Bi2212/Ag HTS coils for conduction-cooled SMES
Hayakawa, N.
20938
Noguchi, S.
20939
Kurupakorn, C.
20940
Kojima, H.
20941
Endo, F.
20942
Hirano, N.
20943
Nagaya, S.
20944
Okubo, H.
20945
In this paper, we investigated the electrical and thermal performance of conduction-cooled Bi2212/Ag HTS coils with 4K-GM cryocooler system. First, we measured the critical current Ic for different ambient temperatures T_0 at 4.2K-40K. Experimental results revealed that I_c increased with the decrease in T_0 and was saturated at T_0 < 10K. We carried out thermal analysis considering heat generation, conduction and transfer under conduction-cooling condition, and reproduced the electrical and thermal characteristics of the conduction-cooled HTS coil, taking account of temperature dependence of specific heat and thermal conductivity of the materials. We also measured the temperature rise of Bi2212/Ag HTS coil for different continuous current levels at T_0=4.8K. Experimental results revealed the criterion of thermal runaway, which was discussed in terms of heat genaration and propagation in the test coil.
journal article
Institute of Physics
2006
application/pdf
Journal of Physics Conference Series
43
813
816
http://hdl.handle.net/2237/9148
1742-6588
https://nagoya.repo.nii.ac.jp/record/7467/files/SMES-Revised.pdf
eng
Institute of Physics