The transient one-dimensional heat conduction equation in a Nb-Ti composite superconductor with an initial localized heated zone and cooled by pool boiling of liquid helium (4He) has been analysed numerically. The initial excess thermal energy associated with the localized heated zone was about the
Dynamic analysis of pool-cooled superconductor and MPZ
โ Scribed by Takehiro Ito; Hiromi Kubota
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 449 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0011-2275
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โฆ Synopsis
The transient equation was solved in the vicinity of the boundary between quenching and recovery in full detail for a heat input introduced as the disturbance, which takes a space-wise and time-wise rectangular shape, and the true boundaries in the safety maps are shown. Though the dynamic analysis is indispensable to confirm the safety of the superconductor, the space-wise and time-wise shape of the distribution of the disturbance should be taken into account in the analysis to locate the real boundary between quenching and recovery of superconductors. The MPZ scrutiny of safety only by the stored energy in excess of the bath temperature at static equilibrium works in the limited region of relevant paremeters.
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