Dynamic Simulation of Sub-Scale ITER CS/STR Cooling Loop
Applied Superconductivity, IEEE Transactions（2012）
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.
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Key words
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,liquid helium reservoir,pulsating heat loads,dynamic simulation,supercritical helium,valves,heating,computer model,heat exchanger,reservoirs,process control,computational modeling
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