2433 PWR 燃料集合体過渡時熱伝達試験 : 基礎試験 : 支持格子の DNB 後熱伝達に及ぼす影響

概要

論文の詳細を見る
To establish the evaluation method of post-DNB heat transfer for PWR thermal hydraulic design, a program of post-DNB heat transfer test is under going. Semi-scale tests using Freon R-123 as a working fluid has been performed prior to full-length rod bundle tests in high pressure and high temperature water simulating real PWR anticipated transient conditions. This paper deals with the outline of Freon R-123 experiments, the evaluation of experimental data and the preliminary assessment of several existing film boiling heat transfer correlations. The stable film boiling was observed in this semi-scale tests. The enhancement of post-DNB heat transfer by the mixing vane type grid spacers is confirmed as similar to the increase of DNB power. This tendency is significant in case of shorter grid span.
社団法人日本機械学会の論文
2000-07-31