Re-evaluation of the intercept temperature for HTS current leads based on practical and economical considerations
✍ Scribed by Christopher M. Rey
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 268 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0011-2275
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✦ Synopsis
An optimization analysis was performed to determine the intercept temperature that minimizes the net room-temperature refrigeration requirements for a binary-type HTS current lead. Two types of HTS material systems were investigated: (1) Bi 2 Sr 2 Ca 1 Cu 2 O x (2212) melt-cast-processed tube and (2) Bi 2 Sr 2 Ca 2 Cu 3 O x (2223) Ag-Au alloyed powderin-tube tape. An example analysis was performed on a conduction-cooled HTS current lead using a cryocooler. The presence of a safety lead and a background magnetic field strongly influences the optimum intercept temperature. In addition, an analysis was performed to determine the optimal intercept temperature based on economic considerations. In the economic analysis, the optimal intercept temperature is determined by minimizing the capital investment cost of the HTS current lead and its corresponding refrigeration system. It was the economic impact that the intercept temperature has on combined system cost that provided the motivation for this analysis and may be of interest for commercial applications.