【摘要】 在已开发出的Φ7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Φ5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0.25~4.00 m s范围内,与Φ7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Φ9管径换热器减小55%左右,比Φ7管径换热器减小32%左右,可望用于替代原Φ9与Φ7管径的换热器.更多还原

【Abstract】 Based on the former Φ7 diameter heat exchanger with louver fin surface which has been exploited,the further investigation is made to further optimize the Φ7 diameter louver fin surface configuration.And a new type of Φ5 diameter louver fin heat transfer surface is designed.And then,detailed numerical simulation on flow and heat transfer of the Φ5 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 Φ7 diameter.And the condenser volume is reduced by 55% compared with that of Φ9 diameter heat transfer surface and by 32% compared with that of Φ7 diameter with the constraint of almost the same heat transfer rate and a bit larger comprehensive performance.更多还原