三维内微肋水热管强化传热实验

首次报道了三维内微肋两相闭式热虹吸管的传热性能，在实验范围内，与光管相比，竖直放置时，平均沸腾换热系统可以提高50%-238%，平均凝结换热系数可以提高100%-222%，小倾角下，平均沸腾换热系数可以提高51%-171%，平均凝结换热系统可以提高42%-17%，三维内微肋结构能够大大强化热管的沸腾换热与凝结换热，有效地减小热管的内热阻。

Experiments on heat transfer augmentation of the three- dimensional-internally microfinned water heat pipe

In this work, heat transfer performance of three-dimensional internally microfinned two-phase closed thermosyphon was reported for the first time. Compared with flat heat pipes, the mean boiling and condensation heat transfer coefficients of this internally microfinned heat pipe can be increased by 50% to 238% and 100% to 222%, respectively. At small inclination angles, the mean boiling and condensation heat transfer coefficients can be increased by 51% to 171% and 42% to 170%, respectively. It was therefore concluded that the three-dimensional internally microfinned structure can greatly enhance both boiling and condensation heat transfer and decrease the total heat resistance effectively.