摘要
对花瓣形翅片管在纵向冲刷条件下的冷凝传热性能及传热强化机理进行了研究。通过对实验结果的分析得知，由于该翅片管既能充分发挥冷凝液表面张力的作用，又能干扰汽液两相流态，增加边界层的湍流，因而对强化纵向冲刷冷凝具有明显的效果，其平均冷凝传热系数是光滑管的１１～１８倍。
Abstract In this paper,the heat transfer performance and heat transfer mechanism of the longitudinal flow on the petal shaped fin tube (PF tube)was studied.It was found that by analysing the experiment results:PF tube has special fin structure, which make it not only can effectively exert surface tension, but also disturb vapor-liquit two phase flow and promote the turbulence in the boundary Layer,so that PF tube could effectively enhance the condensation of longitudinal flow.The mean condensation heat transfer coefficient on PF tube was 11￣18 times as large as that for smooth tube.
出处
《石油化工设备》
CAS
北大核心
1996年第3期3-6,共4页
Petro-Chemical Equipment
基金
国家自然科学基金
霍英东青年教师基金
