酒窝状竖板降膜蒸发器强化传热性能研究

Researches on the Enhanced Heat Transfer Characteristics of the Dimply-Shaped Vertical Plate Falling Film Evaporators

研究了酒窝状竖板降膜蒸发器的传热性能,对液膜不同流动状态时板外侧和板内侧传热进行了研究,推导出无因次传热分系数关联式,提出改善蒸发器的传热性能必须从蒸发侧着手的结论。

The heat transfer characteristics of a dimply-shaped vertical plate falling film evaporator was studied,the heat transfer on the inside and outside sides of the vertical plate in different flow conditions of liquid film was also studied,the relation of the branch coefficient of the dimensionless heat transfer was derived,it was concluded that the emphasis must be put on the evaporating side of the evaporator for improving heat transfer characteristics.