Application of the Dispersed Low-Pressure Gas-Liquid Flow in the Cooling System of Lithium Divertor Plates of the Tokamak

• Published in: Physics of atomic nuclei Vol. 85; no. Suppl 1; pp. S109 - S115
• Main Authors: Vertkov, A. V., Zharkov, M. Yu, Zakharenkov, A. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-12-2022; Springer; Springer Nature B.V
• Subjects: Coolants; Cooling; Cooling systems; Dispersion; Heat transfer coefficients; Heat transmission; Liquid flow; Lithium; Low pressure gases; Materials testing; Particle and Nuclear Physics; Physics; Physics and Astronomy; Plasma jets; Tokamak devices; cooling; lithium CPS; dispersed gas-liquid flow; divertor; heat transfer coefficient; design
• ISSN: 1063-7788; 1562-692X
• DOI: 10.1134/S1063778822130117

The selection of the coolant and design of the heat removal system is a key problem in the development of an alternative version of the divertor of a stationary tokamak reactor based on lithium capillary-porous systems. The article discusses the design solution of the lithium divertor target plate of the Kazakhstan Tokamak for Material Testing (KTM) with a thermal stabilization system based on the use of a dispersed low-pressure gas-liquid flow. The methodology is described, and the first results of the experimental study of the cooling process performed in support of the proposed design on a simulated model of the divertor plate are analyzed. Data on calibration of the heat flow source based on an electric-arc gas-plasma torch for densities up to 3 MW/m
2
, the cooling system operating parameters, and the obtained heat transfer coefficients are presented. It is concluded that the proposed design of the divertor target plate with a finely dispersed gas-liquid coolant for a tokamak with a stationary plasma discharge is promising for further research.