Numerical Investigation of Channel for Helium Cooled China HCCB-TBM First Wall by Application Enhance Heat Transfer Method

Cheng, Dajun; Deng, Haifei; Yang, Bin; Shi, Bo; Yang, Jin Min

doi:10.1007/s10894-016-0098-6

Cited by 3 publications

(1 citation statement)

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“…The allowable temperature of blanket structural material (RAFM steel) is an important factor limiting the thermal load bearing capacity. In order to efficiently cool the high heat flux of FW, Cheng [8] designed the heat transfer enhancement schemes by roughening the inner wall surface of the helium flow channel, setting fins and other enhanced heat transfer methods, or enhancing the turbulence disturbance type into a secondary vortex in the flow boundary layer. Andreozzi [9] studied three types of heat transfer enhancement structures (triangular fins, rectangular fins, trapezoidal fins) applied to tubular heating channels, and found that the triangular fins has the best heat transfer performance but higher pressure drop.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Of Heat Transfers Synergistic Performance Of He/S-CO2 Mixture Gas With The Heat Transfer Enhancement Structure On The First Wall Of Fusion Reactor

Wang²,

Zhou

et al. 2022

Preprint

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As a new cooling medium, Helium/ Supercritical Carbon Dioxide (He / S-CO2) binary mixture gas can effectively improve the heat transfer capability. In this paper, the heat transfers synergistic performance of He / S-CO2 with fins structure were numerically simulated by ANSYS / CFD method. The results show that the pressure drop in the channel decreases gradually with the increase of volume fraction of S-CO2. Comparing with smooth channel, fin structure can significantly improve the intensity of convective heat transfer intensity, the average Nusselt number of flow channel with finger fins are increased by 80%. The heat transfer efficiency of He/S-CO2 binary mixture gas coupled with heat transfer enhancement structure (triangular fins) is increased by 310% at the condition of volume ratio of S-CO2 to He with 2:1. Further study on the optimized scheme of first wall (FW) of International Thermonuclear Experimental Reactor (ITER) China Helium-Cooled Ceramic Breeder-Test Blanket Module (HCCB-TBM) show that triangular fins are placed on the inner surface of FW faced deuterium-tritium plasma, and the optimized distance between fin pitches is 7 ~ 10mm. The results can provide meaningful references for the cooling scheme design of the FW in ITER.

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Section: Introductionmentioning

confidence: 99%