蒸发式冷凝器传热性能实验研究  

Experimental study on heat transfer performances of the evaporative condenser

作　　者：王志远[1] 李鹏飞[1] 肖立宁[2] 

机构地区：[1]河南科技大学车辆与动力工程学院,洛阳471000 [2]西安交通大学车辆与动力工程学院,西安710049

出　　处：《低温与超导》2011年第7期63-68,共6页Cryogenics and Superconductivity

基　　金：河南省高校新世纪优秀人才支持计划项目(2006HANCET-11)资助

摘　　要：建立了蒸发式冷凝器传热性能测试实验台,着重研究了在传热实验台上蒸发式冷凝器管外水膜的传热性能。通过调节不同影响参数,测试了冷却水量和冷却风量对蒸发式冷凝器管外水膜传热系数的影响。实验结果表明,当喷淋密度为0.061kg/(m.s)和迎面风速为4.9m/s时,从经济性和安全性方面考虑,蒸发式冷凝器传热性能达到最佳状态。此外,通过对实验数据回归分析,得到了管外水膜传热系数的计算关联式。通过误差分析发现,迎面风速也是影响蒸发式冷凝器管外水膜换热系数的一个关键因素。To study the heat transfer performances of the water film outside of evaporative condenser tubes, the experimental apparatus was built up. In this paper, the effects of the spray density and the head - on air velocity on the heat transfer coefficient were investigated emphasizely under various operation conditions. The experimental results showed that when spray density was 0. 061 kg·m^-1 · s ^- 1 and head - on air velocity was 4.9m · s ^- 1, the heat transfer performances of the evaporative condenser came to optimum state. Further more, the classical correlation equation for the heat transfer coefficient of the water film was obtained through regression analysis of the experimental data. In addition, the influence of the head - on air velocity on the heat transfer coefficient was very impartment.

关 键 词：蒸发式冷凝器 传热性能 喷淋密度 迎面风速 

分 类 号：TB657.5[一般工业技术—制冷工程]