空气相对湿度对板式蒸发冷凝器传热性能影响的实验研究  

Experimental Study on Effect of Inlet-Air Relative Humidity on Heat Transfer Performance of Plate-Type Evaporative Condenser

作　　者：简弃非[1] 戴晨影 任勤[1] 张勇 

机构地区：[1]华南理工大学机械与汽车工程学院,广州市510640 [2]广州市华德工业有限公司,广州市510663

出　　处：《电力建设》2015年第3期94-98,共5页Electric Power Construction

摘　　要：为了研究空气湿度对蒸发式冷凝器传热性能的影响,建立了蒸发式冷凝器板外水膜传热性能实验平台。在其他条件不变的情况下,调节空气湿度参数,测试了空气湿度对喷淋水温度、板片表面水膜及填料表面上、下温度等参数的影响。实验结果表明,当进入板片间的空气相对湿度从85%增至90%,水膜温度呈增加趋势,不同位置水膜温度有明显差别,喷淋水的换热量增加,湿空气的换热量减少,板片的平均热流密度和传热系数均随着相对湿度的增加而变小。To study the effect of the relative humidity of air on heat transfer performance, a heat transfer performance test of water film based on evaporative condenser was carried out. The cooling water temperature, the water film temperature of plates and the temperature above and below the surface of filler were investigated by test equipments under the condition that the relative humidity of air was adjusted, and other parameters remained the same. The results show that the temperature of water film increases when the relative humidity of the air between plates increases from 85% to 90%. The temperature of water film at different position is obviously different. With the increase of humidity, the heat transfer mass of spray water increases, while the heat transfer mass of wet air, the average heat flux and surface heat transfer coefficient of plate decreases.

关 键 词：板式蒸发冷凝器 相对湿度 传热性能 实验研究 

分 类 号：TK124[动力工程及工程热物理—工程热物理]