采用铜铝复合管的翅片管换热器性能试验研究

针对铜铝复合管(ACC管)在空调用翅片管换热器中替代铜管应用进行了试验研究。分别对Ф7.94mm型管的全铜管、过冷段铜铝复合管、全铜铝复合管三种换热器进行了性能比较和成本分析。研究结果表明,在风速和风量不变的情况下,过冷段铜铝复合管换热器能力为8634.22W,高于全铜铝复合管的换热器的8389.36W,低于全铜管换热器的8989.07W。制冷剂侧能力测试中,过冷段铜铝复合管换热器平均值为8.885kW,与全铜铝复合管换热器平均值8.775kW相比高1.24%,与全铜管换热器平均值9.101kW相比低2.37%,与能力测试结果基本一致。与原换热器铜管相比,在相同条件下,铜铝复合管可以降低管材成本29.5%。综上所述,过冷段采用铜铝复合管的换热器能够取代铜管换热器应用在空调中,在不影响其换热性能的基础上,降低成本效果明显。

Experimental research on substitute of aluminum clad copper tube in finned tube heat exchanger

In this paper,the aluminum clad copper tube was investigated to replace copper tube as finned tube heat exchanger.The heat transfer performance and cost of three types of finned tube heat exchangers adopting copper tube,subcooled portion with aluminum clad copper tube and all aluminum clad copper tube with Ф7.94mm diameter were compared.The experimental results show that with the same wind speed and air volume,the capacity of the heat exchanger with aluminum clad copper tube in subcooled portion in air side is 8634.22W,higher than that of the heat exchanger with all aluminum clad copper tube,and lower than that of the heat exchanger with copper tube.Meanwhile,the capacity of the heat exchanger with aluminum clad copper tube in subcooled portion in the refrigerant side is 8.885kW,which is 1.24% higher than that of the heat exchanger with all aluminum clad copper tube and 2.37% lower than that of the heat exchanger with copper tube.At the same conditions,the costs of aluminum clad copper tube can be reduced 29.5% compared with copper tube.In summary,the heat exchanger with aluminum clad copper tube in subcooled portion can replace the heat exchanger with copper tube in the condenser of air conditioning,which can reduce cost and meet with the performance of heat exchangers’.