Real-time gas cooling of flowing liquid lithium limiter for the EAST

X. C. Meng; M. Huang; C. L. Li; Z. Sun; W. Xu; R. Maingi; K. Tritz; D. Andruczyk; Y. Z. Qian; Q. X. Yang; X. L. Yuan; J. J. Huang; X. Gao; B. Yu; J. G. Li; G. Z. Zuo; J. S. Hu

doi:10.1016/j.fusengdes.2020.111537

Real-time gas cooling of flowing liquid lithium limiter for the EAST

X. C. Meng, M. Huang, C. L. Li, Z. Sun, W. Xu, R. Maingi, K. Tritz, D. Andruczyk, Y. Z. Qian, Q. X. Yang, X. L. Yuan, J. J. Huang, X. Gao, B. Yu, J. G. Li, G. Z. Zuo, J. S. Hu

Research output: Contribution to journal › Article › peer-review

Abstract

A novel continuously flowing liquid lithium limiter (FLiLi) which employs an in-vessel electro-magnetic pump to drive liquid Li flowing on the surface of limiter has been successfully designed and tested in the experimental advanced superconducting tokamak (EAST) device in 2014. In order to better control the surface temperature, an upgraded design and the real-time gas cooling were performed in 2016. Two kinds of cooling gas, helium (He) and argon (Ar) were tested on the FLiLi system prior to the experiment. It was found that the cooling rates of He and Ar at 2.5 MPa are 34.2 ℃/min, 10.2 ℃/min or 31.7 ℃/kL and 28.1 ℃/kL, respectively. The cooling performance of He is more effective than Ar. Experimental results show that the real-time He cooling could effectively contain the FLiLi surface temperature increase and prevent the strong passive evaporation of lithium during plasma discharges. Limiter heat flux up to 0.2 MW/m² was removed during ohmic discharge with 2.5 MPa He gas. Finally, Because of the upgraded design and real-time gas cooling, the surface of FLiLi was not damaged by heat flux after entire plasma discharge.

Original language	English (US)
Article number	111537
Journal	Fusion Engineering and Design
Volume	154
DOIs	https://doi.org/10.1016/j.fusengdes.2020.111537
State	Published - May 2020
Externally published	Yes

Keywords

Gas cooling
Heat flux
Liquid lithium limiter
Plasma

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear Energy and Engineering
General Materials Science
Mechanical Engineering

Online availability

10.1016/j.fusengdes.2020.111537

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Meng, X. C., Huang, M., Li, C. L., Sun, Z., Xu, W., Maingi, R., Tritz, K., Andruczyk, D., Qian, Y. Z., Yang, Q. X., Yuan, X. L., Huang, J. J., Gao, X., Yu, B., Li, J. G., Zuo, G. Z., & Hu, J. S. (2020). Real-time gas cooling of flowing liquid lithium limiter for the EAST. Fusion Engineering and Design, 154, Article 111537. https://doi.org/10.1016/j.fusengdes.2020.111537

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title = "Real-time gas cooling of flowing liquid lithium limiter for the EAST",

abstract = "A novel continuously flowing liquid lithium limiter (FLiLi) which employs an in-vessel electro-magnetic pump to drive liquid Li flowing on the surface of limiter has been successfully designed and tested in the experimental advanced superconducting tokamak (EAST) device in 2014. In order to better control the surface temperature, an upgraded design and the real-time gas cooling were performed in 2016. Two kinds of cooling gas, helium (He) and argon (Ar) were tested on the FLiLi system prior to the experiment. It was found that the cooling rates of He and Ar at 2.5 MPa are 34.2 ℃/min, 10.2 ℃/min or 31.7 ℃/kL and 28.1 ℃/kL, respectively. The cooling performance of He is more effective than Ar. Experimental results show that the real-time He cooling could effectively contain the FLiLi surface temperature increase and prevent the strong passive evaporation of lithium during plasma discharges. Limiter heat flux up to 0.2 MW/m2 was removed during ohmic discharge with 2.5 MPa He gas. Finally, Because of the upgraded design and real-time gas cooling, the surface of FLiLi was not damaged by heat flux after entire plasma discharge.",

keywords = "Gas cooling, Heat flux, Liquid lithium limiter, Plasma",

author = "Meng, {X. C.} and M. Huang and Li, {C. L.} and Z. Sun and W. Xu and R. Maingi and K. Tritz and D. Andruczyk and Qian, {Y. Z.} and Yang, {Q. X.} and Yuan, {X. L.} and Huang, {J. J.} and X. Gao and B. Yu and Li, {J. G.} and Zuo, {G. Z.} and Hu, {J. S.}",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = may,

doi = "10.1016/j.fusengdes.2020.111537",

language = "English (US)",

volume = "154",

journal = "Fusion Engineering and Design",

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AU - Meng, X. C.

AU - Huang, M.

AU - Li, C. L.

AU - Sun, Z.

AU - Xu, W.

AU - Maingi, R.

AU - Tritz, K.

AU - Andruczyk, D.

AU - Qian, Y. Z.

AU - Yang, Q. X.

AU - Yuan, X. L.

AU - Huang, J. J.

AU - Gao, X.

AU - Yu, B.

AU - Li, J. G.

AU - Zuo, G. Z.

AU - Hu, J. S.

PY - 2020/5

Y1 - 2020/5

N2 - A novel continuously flowing liquid lithium limiter (FLiLi) which employs an in-vessel electro-magnetic pump to drive liquid Li flowing on the surface of limiter has been successfully designed and tested in the experimental advanced superconducting tokamak (EAST) device in 2014. In order to better control the surface temperature, an upgraded design and the real-time gas cooling were performed in 2016. Two kinds of cooling gas, helium (He) and argon (Ar) were tested on the FLiLi system prior to the experiment. It was found that the cooling rates of He and Ar at 2.5 MPa are 34.2 ℃/min, 10.2 ℃/min or 31.7 ℃/kL and 28.1 ℃/kL, respectively. The cooling performance of He is more effective than Ar. Experimental results show that the real-time He cooling could effectively contain the FLiLi surface temperature increase and prevent the strong passive evaporation of lithium during plasma discharges. Limiter heat flux up to 0.2 MW/m2 was removed during ohmic discharge with 2.5 MPa He gas. Finally, Because of the upgraded design and real-time gas cooling, the surface of FLiLi was not damaged by heat flux after entire plasma discharge.

AB - A novel continuously flowing liquid lithium limiter (FLiLi) which employs an in-vessel electro-magnetic pump to drive liquid Li flowing on the surface of limiter has been successfully designed and tested in the experimental advanced superconducting tokamak (EAST) device in 2014. In order to better control the surface temperature, an upgraded design and the real-time gas cooling were performed in 2016. Two kinds of cooling gas, helium (He) and argon (Ar) were tested on the FLiLi system prior to the experiment. It was found that the cooling rates of He and Ar at 2.5 MPa are 34.2 ℃/min, 10.2 ℃/min or 31.7 ℃/kL and 28.1 ℃/kL, respectively. The cooling performance of He is more effective than Ar. Experimental results show that the real-time He cooling could effectively contain the FLiLi surface temperature increase and prevent the strong passive evaporation of lithium during plasma discharges. Limiter heat flux up to 0.2 MW/m2 was removed during ohmic discharge with 2.5 MPa He gas. Finally, Because of the upgraded design and real-time gas cooling, the surface of FLiLi was not damaged by heat flux after entire plasma discharge.

KW - Gas cooling

KW - Heat flux

KW - Liquid lithium limiter

KW - Plasma

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VL - 154

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

M1 - 111537

ER -

Real-time gas cooling of flowing liquid lithium limiter for the EAST

Abstract

Keywords

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