长江水源热泵换热器传热流动特性研究  

Research on Heat Exchange Flow Performance of Heat Exchanger of Yangtze River Water-source Heat Pump

作　　者：王子云[1] 付祥钊[1] 仝庆贵[1] 

机构地区：[1]重庆大学城市建设与环境工程学院

出　　处：《煤气与热力》2008年第2期7-10,共4页Gas & Heat

基　　金：国家十一五科技支撑计划项目(2006BAJ01A06-3);重庆市建委科技攻关项目(200641)

摘　　要：通过实验方法测试了以原生长江水为冷却水的换热器污垢热阻和摩阻系数的变化。换热器的污垢热阻随时间呈渐进性增长,污垢热阻形成过程不存在诱导期。冷却水流速的提高可减缓污垢的形成。长江水引起的污垢主要为颗粒污垢,其形成主要受江水中泥沙含量的影响。换热器的摩阻系数与污垢热阻的变化趋势类似,二者均随冷却水流速的提高而下降。The variation of fouling resistance and frictional resistance coefficient of heat exchanger using connate Yangtze River water as cooling water is tested experimentally. The fouling resistance increases asymptotically with time, and there is no induction period during the formation of fouling resistance. The fouling formation can be delayed by the increase of cooling water flow rate. The fouling is mainly particulate fouling because of the influence of the silt concentration in Yangtze River water. The variation trend of frictional resistance coefficient of heat exchanger is similar to that of the fouling resistance, and the both decrease with the increase of cooling water flow rate.

关 键 词：水源热泵 长江水 换热器 污垢热阻 摩阻系数 

分 类 号：TU995[建筑科学—供热、供燃气、通风及空调工程]