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Conference Article: Flow Field Analysis of the Hot gas chamber of the 10 MW High Temperature Reactor

Jinhua Wang, Zhiyong Huang, Hanliang Bo, Shengyao Jiang, Institute of Nuclear and New Energy Technology, Beijing, CHINA

Abstract

The flow field in the hot gas chamber of the 10 MW High Temperature Gas Cooled Reactor (HTR-10) was studied with the Computational Fluid Dynamics (CFD) program CFX5. The velocity field and temperature field in the hot gas chamber and hot gas duct were obtained. The temperature mixing coefficients in the hot gas duct were also calculated, and the simulation’s accuracy and reliability were validated by comparison with the experimental results. Two additional design schemes of the hot gas chamber were calculated in order to determine the optimal hot gas chamber to minimize temperature differences at the inlet of the heat exchanging components. The results indicated that the temperature mixing coefficient in the hot gas duct increases with the distance from the hot gas chamber. The design scheme of the hot gas chamber in the HTR-10 could be improved through removing the ribs and adding more gas inlets to accelerate heat transfer between air flows with different temperatures.

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key words: high temperature gas cooled reactor; hot gas chamber; computational fluid dynamics; numerical simulation; temperature mixing coefficient
Reference:
Proceedings of the Conference on High Temperature Reactors, Beijing, China, September, 22-24, 2004
International Atomic Energy Agency, Vienna (Austria)
HTR-2004, pp:1-10