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Convective heat transfer enhancement when using gas-solid particle two phase coolant for the Tokamak type reactor first wall cooling

A.M. Epinatiev, V.V. Perevezentsev, A.V. Razmerov1996年Fusion Engineering and DesignIF 1.7出版社

AbstractComparatively low coefficients of heat transfer to gas coolant, the necessity to remove considerable heat fluxes at sufficiently low maximum temperatures for the ITER blanket first wall demands high (above 10 MPa) pressures of helium coolant used for the purpose of a/m. This can be the reason for the considerable decreasing of ITER reliability and safety. One of the promising ways of solving the problem in question is to use two phase gas-solid particles flow as a coolant. Experimental data from the investigation of convective heat transfer in two phase gas-solid particles systems are given. Results of calculation analysis of the ITER first wall cooling by two phase gas-solid particles flow are discussed in this paper.

日本語訳

ガス冷却材への熱伝達係数が比較的低いこと、そしてITERブランケット第一壁の最高温度を十分に低く保ちながらかなりの熱流束を除去する必要性から、前述の目的のために使用されるヘリウム冷却材には高い圧力(10 MPa以上)が要求される。これはITERの信頼性と安全性を著しく低下させる原因となり得る。問題を解決する有望な方法の一つは、二相ガス・固体粒子流を冷却材として使用することである。二相ガス・固体粒子系における対流熱伝達の調査から得られた実験データを示す。本論文では、二相ガス・固体粒子流によるITER第一壁冷却の計算解析結果について議論する。

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