ITER LHe Plants Parallel Operation

The China Fusion Engineering Test Reactor (CFETR) is the next tokamak in China’s roadmap for realizing commercial fusion energy. The CFETR cryogenic system is crucial to creating and maintaining operational conditions for its superconducting magnet system and thermal shields. The preliminary conceptual design of the CFETR cryogenic system has been carried out with reference to that of ITER. It will provide an average capacity of 75 to 80 kW at 4.5 K and a peak capacity of 1300 kW at 80 K. The electric power consumption of the cryogenic system is estimated to be 24 MW, and the gross building area is about 7000 m2. The relationships among the auxiliary power consumed by the cryogenic system, the fusion power gain and the recirculated power of CFETR are discussed, with the suggestion that about 52% of the electric power produced by CFETR in phase II must be recirculated to run the fusion test reactor.

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“…The schematic layout of the CFETR cryogenic system is illustrated in figure 4, the gross building area is about 7000 m 2 [23,24].…”

Section: Conceptual Design Of the Cfetr Cryogenic Systemmentioning

confidence: 99%

Conceptual design of the cryogenic system and estimation of the recirculated power for CFETR

Liu

Qiu

et al. 2016

Nucl. Fusion

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“…The Large Hadron Collider (LHC) accelerates proton beams at CERN, the European Organization for Nuclear research in Geneva, Switzerland are driven by superconducting magnets, which are cooled down at 1.9K and maintained superconductivity over a 27 km ring by large scale helium cryogenic refrigerators [2][3]. The ITER cryogenic system includes three identical liquid helium (LHe) refrigerators with a total average cooling capacity equivalent to 75 kW at 4.5 K to the magnets and cryopumps [4]. In China, hundreds of watts refrigeration capacity at liquid helium temperature at TIPC/CAS has been developed to satisfy the domestic requirements.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Dynamic Characteristics of a Full Localization 250W@4.5K Helium Cryogenic Refrigerator

Xiujuan¹,

Xie²,

Sheng³

et al. 2020

Preprint

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“…The LHe tank is used as an intermediate 4.5-K-coolingpower storage to manage the parallel operation of the three LHe plants [2] with respect to the dynamic load variation of the superconducting (SC) magnet system where at some instances the heat generated requires a cooling power higher than the average value of the total LHe plant capacity.…”

Section: Introductionmentioning

confidence: 99%

“…and its clients (in-Cryostat TS, SC magnet system, CP). Modifications compared to earlier design [3] mainly resulted from simplifications of pressure control within the LHe plants during parallel operation [2]. Instead of individual control inside each LHe plant, the pressure of the line H and C, downstream from the first and last (forth) expansion turbine (T1 and T4), respectively, are managed by the CTCB control system.…”

Section: Introductionmentioning

confidence: 99%

“…Instead of individual control inside each LHe plant, the pressure of the line H and C, downstream from the first and last (forth) expansion turbine (T1 and T4), respectively, are managed by the CTCB control system. As described in [2], all SHe flows downstream T4 of each LHe plant are collected in the CTCB line C manifold and then expanded into the LHe tank via valve V C0 (or V C9 ), while keeping the pressure close to 5 bar. The same is applicable for the line H common pressure control downstream T1 of each LHe plant using V H0 .…”

Section: Introductionmentioning

confidence: 99%

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Status of the ITER Cryodistribution

Chang

Vaghela

Patel

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Since the conceptual design of the ITER Cryodistribution many modifications have been applied due to both system optimization and improved knowledge of the clients' requirements. Process optimizations in the Cryoplant resulted in component simplifications whereas increased heat load in some of the superconducting magnet systems required more complicated process configuration but also the removal of a cold box was possible due to component arrangement standardization. Another cold box, planned for redundancy, has been removed due to the Tokamak in-Cryostat piping layout modification. In this proceeding we will summarize the present design status and component configuration of the ITER Cryodistribution with all changes implemented which aim at process optimization and simplification as well as operational reliability, stability and flexibility.

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ITER LHe Plants Parallel Operation

Cited by 11 publications

References 1 publication

Conceptual design of the cryogenic system and estimation of the recirculated power for CFETR

Conceptual design of the cryogenic system and estimation of the recirculated power for CFETR

Investigation on Dynamic Characteristics of a Full Localization 250W@4.5K Helium Cryogenic Refrigerator

Status of the ITER Cryodistribution

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