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第 28卷第 2期煤气与热力 Vol. 28 No. 2
2008年 2月 GAS & HEAT Feb. 2008
长江水源热泵换热器传热流动特性研究
王子云 1、2 , 付祥钊 1 , 仝庆贵 1
(1. 重庆大学城市建设与环境工程学院, 重庆 400045; 2. 河南科技大学
建筑工程学院, 河南洛阳 471003)
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。
关键词: 水源热泵; 长江水; 换热器; 污垢热阻; 摩阻系数
中图分类号: TU995 文献标识码: B 文章编号: 1000 - 4416 (2008) 02 - 0A07 - 04
Research on Hea t Exchange Flow Performance of Hea t Exchanger
of Yangtze R iver W a ter source Hea t Pum p
WANG Zi yun, FU Xiang zhao, TONG Q ing gui
Abstract: The variation of fouling resistance and frictional resistance coefficient of heat exchanger
using connate Yangtze R iver water as cooling water is tested experimentally. The fouling resistance in
creases asymp totically with time, and there is no induction period during the formation of fouling resist
ance. 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 R iver water. The
variation trend of frictional resistance coefficient of heat exchanger is sim ilar to that of the fouling resist
ance, and the both decrease with the increase of cooling water flow rate.
Key words: water source heat pump; Yangtze R