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The EU advanced dual coolant blanket concept

Prachai Norajitra, Leo Bühler, Ulrich Fischer, Siegfried Malang, Horst Schnauder2002年Fusion Engineering and DesignIF 1.7出版社

AbstractThe advanced dual coolant (A-DC) blanket is one of the EU advanced concepts to be investigated in the frame of the long-term power plant conceptual study (PPCS). Its basic concept—following the ARIES-ST concept—is based on the use of helium-cooled ferritic steel structure, the self-cooled Pb–17Li breeding zone, and SiC/SiC flow channel inserts. The latter serves as electrical and thermal insulators and therefore minimize the pressure losses and enable a relatively high Pb–17Li exit temperature leading to a high thermal efficiency. The present work on PPCS is drawn extensively on the preparatory study on plant availability (PPA) carried out in 1999 where a maximum neutron wall load of 5 MW/m2 (corresponding maximum surface heat load of 0.9 MW/m2) was given in the reference case of the A-DC blanket. In the following stage of PPCS the A-DC blanket is normalized and adapted to a typical size of commercial reactors (e.g. 1500 MWe) which requires iterative calculations between the blanket layout and the system code analysis. The status of the work with some idea improvements is reported.

日本語訳

先進デュアル冷却材(A-DC)ブランケットは、長期発電プラント概念研究(PPCS)の枠組みにおいて調査すべきEUの概念の一つである。その基本概念は、ARIES-STの概念に従い、ヘリウム冷却フェライト鋼構造、自己冷却型Pb-17Li増殖領域、およびSiC/SiC流路挿入物の使用に基づく。後者は電気的・熱的絶縁体として機能し、圧力損失を最小化するとともに、比較的高いPb-17Li出口温度を可能にし、高い熱効率をもたらす。PPCSにおける本研究は、1999年に実施された準備研究(PPA)を大幅に基盤としており、そこではA-DCブランケットの参照ケースにおいて最大中性子壁負荷5 MW/m²(対応する最大表面熱負荷0.9 MW/m²)が設定された。PPCSの次の段階では、A-DCブランケットは商業炉の標準的な規模(例:1500 MWe)に正規化・適合化され、ブランケット配置とシステムコード解析の間の反復計算が必要とされる。本報告では、いくつかの改良案を含む研究の現状について述べる。

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