摘要
描述了在一套管式换热系统上装有一脉动源使管内流体脉动地流动，从而达到了强化换热的目的。实验结果发现，不同的流动速度下，脉动频率的变化对换热系数大小的影响不同；还发现在同一流速下，脉动频率变化对传热影响的规律，存在着最佳脉动频率值。这为改进管壳式换热器提出了一种新型高效的换热方式。本文还对脉动强化换热的机理进行了初步理论探讨。
Heat transfer augment by fluid pulsation was studied experimentally. The effects of pulse frequency and fluid velocity on heat transfer and their interrelation have been investigated. It is found that there is an optimun pulse frequency for certain velocities.
出处
《山东建筑工程学院学报》
1998年第4期46-49,共4页
Journal of Shandong Institute of Architecture and Engineering
关键词
流体脉动
强化换热
最佳脉动频率
fluid pulsation
heat transfer augment
optimun pulse frequency
