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COMMISSIONING RESULT OF THE KSTAR HELIUM REFRIGERATION SYSTEM

  • 발행 : 2008.10.31

초록

To keep the superconducting (SC) magnet coils of KSTAR at proper operating conditions, not only the coils but also other cold components, such as thermal shields (TS), magnet structures, SC bus-lines (BL), and current leads (CL) must be maintained at their respective cryogenic temperatures. A helium refrigeration system (RRS) with an exergetic equivalent cooling power of 9 kW at 4.5 K without liquid nitrogen ($LN_2$) pre-cooling has been manufactured and installed. The main components of the KST AR helium refrigeration system (HRS) can be classified into the warm compression system (WCS) and the cryogenic devices according to the operating temperature levels. The process helium is compressed from 1 bar to 22 bar passing through the WCS and is supplied to cryogenic devices. The main components of cryogenic devices are consist of cold box (C/B) and distribution box (D/B). The C/B cool-down and make the various cryogenic helium for the KSTAR Tokamak and the various cryogenic helium is distributed by the D/B as per the KSTAR requirement. In this proceeding, we will present the commissioning results of the KSTAR HRS. Circuits which can simulate the thermal loads and pressure drops corresponding to the cooling channels of each cold component of KSTAR have been integrated into the helium distribution system of the HRS. Using those circuits, the performance and the capability of the HRS, to fulfill the mission of establishing the appropriate operating condition for the KSTAR SC magnet coils, have been successfully demonstrated.

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참고문헌

  1. C..H. Choi, H.-S. Chang, D.S. Park, Y.S. Kim, J.S. Bak, G.S. Lee, I.K. Kwon, H.M. Kim, M.C. Cho, H.-S. Kim, E. Fauve, I. Abe, P. Briend, J.-M. Bernhardt, Y. Cardet, P. Dauguet, J. Beauvisage, F. Andrieu, S.-H. Yang and G.M. Gistau Baguer, 'Helium Refrigeration System of the KSTAR,' Fusion Engineering and Design, vol. 81, p.2623, 2006 https://doi.org/10.1016/j.fusengdes.2006.07.019
  2. Y.S. Kim, H.-S. Chang and K.W. Cho, 'Technical Requirement for the KSTAR Helium Refrigeration System,' KSTAR Helium Refrigeration System project internal release document, 2004
  3. P. Dauguet and E. Fauve, 'KSTAR Helium Refrigeration System Technical Proposal,' C1119-NT-011 (6), AIR LIQUIDE-DIVISION TECHNIQUES AVANCEES, 2005
  4. P. Briend and I. Abe, 'KSTAR Helium Refrigeration System Process Justification File,' C1119-NT-151 (1), AIR LIQUIDE-DIVISION TECHNIQUES AVANCEES ,2005
  5. Siemens Energy and Automation Inc., 'Installation, Operation and Maintenance Manual,' Norwood, OHIO, USA, 2002
  6. E. Fauve, M. Maccagnan and J. Beauvisage, 'Functional Analysis for TOROMONT Compression Station (1),' C1119-NT-153 (1), AIR LIQUIDE-DIVISION TECHNIQUES AVANCEES, 2007
  7. P. Briend, G. Briend, E. Fauve and F. Andrieu, 'D/B and LHe Storage Static Heat In-leak Calculation Notes,' C1119-NT-101 (1), AIR LIQUIDE-DIVISION TECHNIQUES AVANCEES, 2006
  8. A. Alekseev et al., 'Thermo-hydraulic analysis of the KSTAR magnet system,' KSTAR project internal release document, 2002

피인용 문헌

  1. Influence of Plasma Operation on the PF Circulator of KSTAR HRS System During 2010 Campaign vol.40, pp.5, 2012, https://doi.org/10.1109/TPS.2012.2188649