摘要
在已开发出的Ф7管径的百叶窗翅片换热器的基础上继续进行翅片结构优化，成功开发出一种Ф5管径的换热器，然后对此百叶窗翅片进行了详细的数值模拟．结果显示：从空气侧考虑，在迎面风速0．25～4．00m／s范围内，与Ф7管径换热器比较，压降减小，综合性能（CPF）提高；在换热性能基本保持不变且综合性能略有提高的情况下，体积比Ф9管径换热器减小55％左右，比Ф7管径换热器减小32％左右，可望用于替代原Ф9与Ф7管径的换热器．
Based on the former Ф7 diameter heat exchanger with louver fin surface which has been exploited, the further investigation is made to further optimize the Ф7 diameter louver fin surface configuration. And a new type of Ф5 diameter louver fin heat transfer surface is designed. And then, detailed numerical simulation on flow and heat transfer of the Ф5 diameter louver fin is conduced. The results show that, considered from air-side, the pressure drop decreases while the comprehensive performance factor（CPF） increases in the velocity range of 0.25 - 4.00 m/s compared with that of Ф7 diameter. And the condenser volume is reduced by 55% compared with that of 459 diameter heat transfer surface and by 32% compared with that of 457 diameter with the constraint of almost the same heat transfer rate and a bit larger comprehensive performance.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2011年第9期798-802,共5页
Journal of Tianjin University(Science and Technology)
基金
国家重点基础研究发展计划(973计划)资助项目(G2007CB206902)
关键词
百叶窗翅片
流动与传热
换热器
5mm管径
louver fin
flow and heat transfer
heat exchanger
5 mm tube-diameter
