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Transverse heat transfer coefficient in the dual channel ITER TF CICCs. Part III: Direct method of assessment |
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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. Faculty of Maritime Technology and Transport, West Pomeranian University of Technology, Szczecin, Al. Piastów 41, 71-065 Szczecin, Poland;1. CEA, IRFU, 91191 Gif-sur-Yvette Cedex, France;2. CEA, IRFM, 13108 Saint-Paul-lez-Durance, France;1. CEA, IRFU, 91191 Gif-sur-Yvette Cedex, France;2. CEA/IRFM Saint-Paul-lez-Durance 13108 France;1. ITER Organization, Route de Vinon sur Verdon, 13115 St Paul lez Durance, France;2. ITER China, 15B Fuxing Road, Beijing 100862, China;3. US ITER Project Office, 1055 Commerce Park Dr., Oak Ridge, TN 37831, USA;4. CERN, CH-1211 Genève 23, Switzerland;5. General Atomics, P.O. Box 85608, San Diego, CA 92186-5608, USA;6. ASIPP, Shushan Hu Road 350, Hefei, Anhui 230031, China;1. CEA/IRFM, 13108 Saint-Paul-lez-Durance, France;2. CEA/IRFU, 91191 Gif-sur-Yvette Cedex, France |
| Abstract: | The data resulting from the thermal-hydraulic test of the ITER TF CICC are used to determine the flow partition and the overall effective heat transfer coefficient (hBC) between bundle and central channel in a direct way, i.e. by analysis of the heat transfer between both flow channels, based on the mass and energy balance equations and the readings of thermometers located inside the cable. In cases without a local heat source in the considered cable segment the obtained hBC values were consistent with those obtained in earlier studies by analysis of experimental data using indirect methods. It was also observed that the transverse heat transfer was strongly enhanced in a cable segment heated from outside. This phenomenon results from the mass transfer from the bundle region to the central channel. The experimental hBC data obtained for the case without a heat source in the considered segment were also compared with those calculated using various heat transfer correlations. |
| Keywords: | Cable-in-conduit conductors Heat transfer coefficient Flow partition Heat transfer correlation Fusion magnets ITER |
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