Key features of the KSTAR helium refrigeration system

Park, Dong-Seong; Joo, Jae-Joon; Moon, K.M.; Chang, Y.B.; Kim, Sehyun; Park, Young-Min; Kwag, S.W.; Song, N.H.; Lee, Hyunjung; Yang, H.L.; Na, Hoon-Kyun; Kwon, M.; Kim, Nam-Won; Chang, Hyuk; Yang, S.-H.

doi:10.1016/j.cryogenics.2012.05.017

Cited by 6 publications

(1 citation statement)

References 4 publications

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“…Nowadays, many countries have built large-scale scientific devices to provide support for mankind to explore solutions to energy problems and expand basic physical theories [1][2]. The cryogenic system is an indispensable part of many large scientific devices, and large helium refrigerators have a wide range of applications in the field of international thermonuclear fusion research [3][4].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of 5 kW helium turbine for EAST cryoplant

Chen

Zhang

Bao

et al. 2022

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

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The helium turbine is an important core component in the refrigerator, which provides support and guarantee for the stable operation of the cryogenic system. This paper refers to the parameters of one of the four helium turbines in EAST, designs a 5 kW helium turbine. The overall structure of the turbine has been described, and the design and analysis of the impeller and bearing have been carried out. Through CFD analysis, the internal pressure and temperature change law of the flow is analyzed. The variable-condition operating characteristics of the turbine are predicted, and it is found that the turbine can maintain efficient operation within a wide range of mass flow changes. The bearing performance is calculated by solving the Reynolds equation. After determining the optimal bearing clearance 28 μm based on the principle of maximum stiffness, bearing performance parameters of load capacity and stiffness can be further calculated.

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Section: Introductionmentioning

confidence: 99%