Dynamic Simulation of Sub-Scale ITER CS/STR Cooling Loop

Author

Maekawa, R. ; Oba, K. ; Takami, S. ; Iwamoto, A. ; Chang, H.S. ; Forgeas, A. ; Serio, L. ; Vallocorba, R. ; Rousset, B. ; Hoa, C. ; Monteiro, L.

Author_Institution

ITER Organ., St. Paul-lez-Durance, France

Volume

22

Issue

3

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

4704004

Lastpage

4704004

Abstract

The dynamic simulation of a sub-scale ITER Central Solenoid (CS)/STRucture (STR) cooling loop has been performed to investigate the cryogenic control strategies against pulsating heat loads. HELIOS facility has been modified for this particular study, which consists of a Liquid Helium (LHe) reservoir with two immersed heat exchangers, a circulation pump and an approximately 130 m long piping with three evenly distributed heated sections. The setup provides the equivalent thermo-hydraulic configuration of the ITER CS/STR, cooled by the forced-flow Supercritical Helium (SHe). The dynamic simulator, C-PREST, has been utilized to model the HELIOS test loop and to compare the results with the experimental data sets. This paper presents the dynamic simulation results and discusses the control strategy to minimize the cooling power requirements, to have high reliability.

Keywords

Tokamak devices; cryogenics; fluid dynamics; heat exchangers; reliability; superconducting magnets; C-PREST; HELIOS facility; circulation pump; cryogenic control; distributed heated sections; dynamic simulator; equivalent thermohydraulic configuration; forced flow supercritical helium; heat exchangers; liquid helium reservoir; pulsating heat loads; Computational modeling; Cooling; Heating; Load modeling; Process control; Reservoirs; Valves; Dynamic simulation; fluid dynamics; supercritical helium;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2012.2184513

Filename

6164237