S0802-3-2 ISプロセス水素製造法におけるSiC機器の強度評価(原子力システムおよび要素技術(3))

概要

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The Japan Atomic Energy Agency has been conducting R&D on thermochemical water-splitting Iodine-Sulfur (IS) process for hydrogen production to meet massive demand in the future hydrogen economy. A concept of sulfuric acid decomposer was developed featuring a heat exchanger block made of silicon carbide (SiC). Recent activity has focused on the reliability assessment of SiC block. Although knowing the strength of SiC component is important for the reliability assessment, it is difficult to evaluate a large-scale ceramics structure without destructive test. A novel approach for strength estimation of SiC structure has been proposed. In this study, the validity of proposed estimation method was confirmed by comparison with probability of failure, which is conventional method for reliability assessment of ceramic components. The proposal method was effective for strength estimation of a component of large-scale effective volume.
2010-09-04