Parametric study for the cooling of high temperature superconductor (HTS) current leads |
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| Affiliation: | 1. Institute of Physics, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, Al. Piastów 48, 70-311 Szczecin, Poland;2. EPFL-CRPP, Fusion Technology Division, CH-5232 Villigen-PSI, Switzerland;1. EPFL, CRPP - Superconductivity;2. Accelerator Technology Department, CERN;1. Grand Accélérateur National d’Ions Lourds (GANIL), France;2. Centre National de la Recherche Scientifique (CNRS - IN2P3), France;3. Commissariat à l’Energie Atomique (CEA - IRFU), France;4. Ecole Centrale Supélec, France;5. Irène Joliot-Curie Laboratory (IJCLab), France;6. Centre Efficacité Energétique des Systèmes (CES), France;7. MINES ParisTech, France;8. Laboratoire AstroParticule et Cosmologie (APC), France;1. School of Psychology and Public Health, La Trobe University, Bundoora, Victoria, Australia;2. The Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia;3. Florey Department of Neuroscience and Mental Health, The University of Melbourne, Victoria, Australia;4. Department of Integrative Physiology and Center for Neuroscience, University of Colorado Boulder, Boulder, CO, USA;1. Department of Civil Engineering, Nagoya University, Nagoya 464-8603, Japan;2. EcoTopia Science Institute, Nagoya University, Nagoya 464-8603, Japan;3. Department of Civil and Environmental Engineering, Penn State University, PA 16802, USA;1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China;2. Shanghai Institute of Technical Physics, Chinese Academy of Science, 500 Yutian Road, Shanghai 200083, China |
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| Abstract: | The analysis of cooling of a binary HTS 20 kA current lead (CL) operating between 4.5 and 300 K has been carried out. Assuming that the HTS module is conduction-cooled, two cooling options for the copper heat exchanger (HEX) part of the CL have been considered, i.e. (1) cooling with a single flow of gaseous helium and (2) cooling with two flows of gaseous helium. The ideal refrigerator power required to cool the whole HTS CL has been calculated for both cooling scenarios and different values of input parameters and the thermodynamic optimization has been performed for both cooling options. The obtained results indicate that the cooling Option 2 cannot provide significant savings of the refrigerator power, as compared to the Option 1. However, it has been observed that at the same helium inlet temperature the temperature at the warm end of the HTS part, and the resulting number of HTS tapes, can be reduced in the Option 2 with respect to the Option 1. |
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