2519 MRI による氷蓄熱用球状カプセル充てん層内の熱伝達計測

概要

論文の詳細を見る
A new method to measure local heat flux distribution from capsule surface in packed bed of ice thermal storage capsule using magnetic resonance imaging (MRI) was developed. In this method, local heat flux distribution from a capsule was calculated from freezing rate of water in the capsule cooled by brine below 0℃ in a time interval. By applying this method to packed bed, heat flux distributions from capsule surfaces in packed bed were measured, and axial velocity distributions of brine through packed bed were obtained by phase method in MRI techniques. Based on these results, it was found that heat exchange effectiveness of brine through channel was lower than that through other area. In addition, time-variations of overall heat transfer coefficient of packed bed at different flow rates were obtained.
社団法人日本機械学会の論文
2000-07-31