郑州轻工业学院学报（自然科学版）Issue(2)：87-90,95,5.DOI:10.3969/j.issn.2095-476X.2014.02.021
管排数对球突翅片管式换热器传热特性的影响
The effect of tube row number on heat transfer characteristics of the dimpled fin tube heat exchanger
摘要
Abstract
The effect of different tube row number on heat transfer and pressure drop characteristics of dim-pled fin tube heat exchanger was investigated.The results showed that:the ratio of heat transfer rate and pressuer drop(Q/ΔP)and COP decreased with the increase of tube row number,Q/ΔP and COP of two-row tube was the biggest.Compared with the three,four,five-row tube,average Nu number of two-row tube increased by 11.1%,21.7%,23.2%at Re=1 138~3 415,respectively.The flow filed indicated that the arrangement of the dimple could intensify flow turbulence,which enhanced the heat transfer,but when the number of tube rows are 4 and 5 ,the temperature field changed little,which indicated that the heat transfer didn’t change significantly when the number of tube rows increased.So the comprehensive performance of two row tube rows was better.关键词
球突翅片管式换热器/管排数/强化传热Key words
dimpled fin tube heat exchanger/tube row number/enhanced heat transfer分类
能源科技引用本文复制引用
冯丽华,吴学红,吕彦力..管排数对球突翅片管式换热器传热特性的影响[J].郑州轻工业学院学报（自然科学版）,2014,(2):87-90,95,5.基金项目
国家自然科学基金项目（21076200）；河南省省院合作项目（092106000013）；郑州市领军人才项目 （）
