Under the background of shortage of copper resources and large air-conditioning production country, air-conditioning enterprises have developed a round of copper substitution technology this year. At present, Zhigao, Kelong, Gree and other air-conditioning enterprises begin to use copper aluminum connecting pipe instead of pure copper connecting pipe. Midea air conditioner is fully opposed to copper aluminum tube, and accuses copper aluminum tube as "black heart tube", which has caused an uproar in the industry.
In recent years, the international price of electrolytic copper has risen from 20000 yuan to 80000 yuan per ton. Accordingly, the proportion of copper tube in the cost of air conditioning has increased to about 25%. The operating cost of air conditioning and other refrigeration products enterprises has risen sharply. It is urgent to find new alternative materials.
According to Zhao Yue, senior engineer of Ocean University of China, the use of copper aluminum pipe has four advantages: first, the advantages of welding technology: the weld strength of the third generation of copper aluminum connecting pipe produced by thin-walled copper aluminum pipe welding technology is higher than that of copper pipe and aluminum pipe itself; Second, the service life advantage: the appearance of copper aluminum pipe is treated with cross-linked polyethylene, and the service life is more than 20 years; Third, the advantages of energy saving: the use of copper aluminum connecting pipe will be conducive to the insulation of connecting pipe, reduce the waste of cold energy, and improve the level of energy saving; Fourth, it has excellent bending performance and is easy to install and move.
