板式蒸发式冷凝器水膜传热特性研究  

Research on Heat Transfer Performance of Water Film for Plate Evaporative Condenser

作　　者：李元希[1] 蒋翔[2] 吴治将[3] 朱冬生[2] 

机构地区：[1]广东建设职业技术学院机电工程系,广州510470 [2]华南理工大学化学与化工学院,广州510640 [3]顺德职业技术学院机电工程系,佛山528333

出　　处：《武汉理工大学学报》2010年第13期131-134,共4页Journal of Wuhan University of Technology

基　　金：国家"863"高技术研究发展专题课题(2007AA05Z200)

摘　　要：在板式蒸发式冷凝器性能测试实验平台上,测试了纳米TiO2亲水涂层、冷却水喷淋密度、进口空气流速和填料等对水膜传热特性的影响。结果表明,循环冷却水的温度随着进口空气流速的增大而降低;冷却水温不一定和补水温度相等,可能大于也可能小于;纳米TiO2亲水涂层可有效降低表面张力,促进水膜的均匀分布;在相同的操作条件下,加入填料可有效降低循环冷却水的温度,水温降低了0.8-2.2℃,在高风速时更为明显。The Nano TiO2 hydrophilic coating,spray cooling water density,inlet air flow velocity and packing for the heat transfer characteristics of water film are researched based on the performance test experiment of plate evaporative condenser.The results show that the cooling water temperature is decreased gradually with the increasing of inlet air flow velocity,cooling water temperature is not necessarily equal to the water supplement temperature,may also be more or less.Nano TiO2 hydrophilic coating can effectively reduce the surface tension and promote uniform distribution of water film.The cooling water temperature is decreased effectively from 0.8 ℃ to 2.2 ℃ with the packing inserted,which is more obvious in higher inlet airflow velocity.

关 键 词：板式蒸发式冷凝器 风速 填料 喷淋密度 纳米TIO2 

分 类 号：TQ021.3[化学工程] TB657.5[一般工业技术—制冷工程]