采用铜铝复合管的翅片管换热器换热性能数值模拟与实验研究  

Numerical Simulation and Experimental Research on Substitute of Aluminum Clad Copper Tube in Finned Tube Heat Exchanger

作　　者：金听祥[1] 曹玉龙[1] 罗志明[1] 马秋阳[1] 

机构地区：[1]郑州轻工业学院机电工程学院,郑州450002

出　　处：《制冷学报》2014年第1期82-87,共6页Journal of Refrigeration

基　　金：郑州市产学研合作促进计划(121PCXYZ599)资助~~

摘　　要：提出采用一种铜铝复合管,用来替代传统的空调室外机换热器用铜管,可降低成本27.8%。首先通过数值模拟研究了Φ7管径的铜铝复合管与铜管翅片管换热器空气侧的传热与流动性能,计算结果表明,在入口风速为2.5m/s的情况下,与采用铜管的换热器相比,采用铜铝复合管的换热器空气侧的压力分布几乎不变,换热量降低3.12%,对性能影响较小。另一方面,对采用该模型的铜铝复合管换热器进行了性能测试,实验结果表明:铜铝复合管换热器换热量为8775W,与铜管换热器9101W相比降低3.58%,满足换热器标准要求。实验结果与数值模拟结果基本吻合,均证明这种新型铜铝复合管对换热器性能的影响不大,可用于空调的制造中。A new type of aluminum clad copper tube is proposed to substitute traditional copper tube used in heat exchanger of air-condi- tioner, and the cost of exchanger with the aluminum clad copper tube can be reduced by 29.5%. Firstly the airside heat transfer and flow characteristics of heat exchanger with copper tube and aluminum clad copper tube （ACC） are studied by numerical simulation. Computa- tion results show that the performance of fin with ACC tube drops 3.12% compared with that of fin with copper tube while the pressure distribution is almost the same at inlet velocity of 2.5m/s. At the other hand, the performance of heat exchanger with copper and alumi- num clad copper tube is experimentally investigated. According to the experimental results, heat transfer amount of the heat exchanger with ACC tube decreases by 3.58% compared with that of heat exchanger with copper tube, being in line with the heat exchanger stand ards. The numerical and experimental results are basically consistent, both of them indicate that this new type of aluminum clad copper pipe has little negative effect on the performance of heat exchanger. As a result, the aluminum clad copper pipe can be applied in air con ditioner.

关 键 词：空调 换热器 数值模拟 铜铝复合管 

分 类 号：TB657.5[一般工业技术—制冷工程]