垂直フィン付伝熱面からの自然対流熱伝達を促進するための一手法について

抄録

An enhancement technique was developed for natural convection heat transfer from a vertical finned plate. The horizontal plates attached on the finned plate at equal spacing were utilized to promote heat transfer. These horizontal plates redirect the high-temperature fluid flow from the vicinity of the base plate to the outside of the boundary layer, and promote the low-temperature, incoming flow from the far wall region toward the base plate. The overall and local heat-transfer coefficients of thus-treated plates were measured and compared to those of the non-treated, finned plate. It is found that the overall and local heat-transfer coefficients were increased by 20% and 40%, respectively, when the horizontal plates with appropriate height and pitch were used.