EFFECT OF A DELTA-WINGLET VORTEX GENERATOR ON THE PERFORMANCE OF A FIN-AND-TUBE HEAT EXCHANGER

摘要：

　　The aim of this current work is to investigate a Delta-Winglet vortex generator to enhance heat transfer and reduce pressure drop of a fin-and-tube heat exchanger.Three patterns of fin including plate,louver and Delta-Winglet vortex generator geometry were examined in this study.The effect of a Delta-Winglet vortex generator on the performance of a fin-and-tube heat exchanger is experimentally investigated through full-scale wind-tunnel testing of a fin-and-tube heat exchanger under dry-surface conditions.Three types of heat exchangers including 1-row,2-row and 4-row with plate fin,louver fin and Delta-Winglet vortex generator (VG fin) were tested through different velocity conditions.The heat transfer rate per pumping power is assessed for a plate fin baseline、louver fin and for VG fin heat exchanger.For VG fin 1-row heat exchanger,heat transfer rate per pumping power increase over the baseline case of 20% at a frontal velocity of 1 m/s,and approach the baseline case at a frontal velocity of 2 m/s.For VG fin 2-row heat exchanger,heat transfer rate per pumping power decrease over the baseline case of 15% at full range frontal velocity.The frontal velocity ranges from 2 m/s to 5 m/s,the heat transfer rate per pumping power of plate fin heat exchanger is better than other sample.

关键词： Delta-Winglet vortex generator fin-and-tube heat exchanger

作者: Chih-Yung Tseng Jane-Sunn Liaw Yu-Choung Chang Chi-Chuan Wang

作者单位: Industrial Technology Research Institute,Hsinchu,31040,Taiwan Dept.of Mechanical Engineering,National Chiao Tung University,Hsinchu,31040,Taiwan

会议类型: 国际会议

会议名称: 第六届亚洲制冷空调大会(ACRA 2012)

会议地点: 西安

会议语种:英文

页码: 1-8

在线出版日期: 2012-08-26（万方平台首次上网日期，不代表论文的发表时间）