背の高い加熱平板からの自然対流熱伝達の促進について

概要

論文の詳細を見る
An enhancement technique was developed for natural convection heat transfer from tall, vertical heated plate to water. Rectangular grid fins attached to the base plate were utilized as a heat transfer promoter. These grid fins redirect the high-temperature fluid ascending along the base plate toward the outside of the boundary layer and introduce the low-temperature ambient fluid toward the base plate instead. The heat transfer coefficients of thus-treated surfaces were measured and compared with a non-treated, fiat surface and a conventional surface with vertical straight fins. The highest performance was achieved for the experimental surfaces. In particular, the experimental surfaces with 5 mm-high, non-conducting grid fins and with 10 mm-high, conducting grid fins show 27% and 80% higher heat transfer coefficients compared to the turbulent heat transfer coefficients of the non-treated, fiat surface, respectively.
一般社団法人日本機械学会の論文
1999-12-25