Haha, it doesn't matter if the price difference is big. The manufacturer's design is beyond your consideration. Don't worry. Now all new air conditioners use this copper-aluminum pipe as the connecting pipe. What can you do? !
No matter which is better or worse, China is a big copper importer and a big aluminum producer. Chen Gang, deputy secretary-general of China Household Electrical Appliances Association, pointed out that the global copper resources are only enough for 40 years, while China, as a big importer of copper, may not be able to guarantee it for 40 years. Then, if we can replace scarce resources with rich resources we have, it is of course strongly advocated, provided that the product quality is guaranteed.
According to Zhao Yue, a senior engineer of China Ocean University who is responsible for developing the third generation copper-aluminum connecting pipe technology and has obtained the national invention patent, the preparation technology of "copper-aluminum connecting pipe for air conditioning" has obtained the national invention patent, and the copper-aluminum connecting pipe product has been jointly recognized as a national key new product by the Ministry of Science and Technology, the Ministry of Commerce, the General Administration of Quality Supervision, Inspection and Quarantine and the State Environmental Protection Administration. At present, this invention is applying for an international invention patent.
Zhao Yue said that copper-aluminum tubes have four advantages:
First, the advantages of welding technology: the weld strength of the third generation copper-aluminum connecting pipe produced by thin-walled copper-aluminum pipe welding technology is higher than that of copper pipe and aluminum pipe;
Advantages of service life: The appearance of copper-aluminum tube is treated with crosslinked polyethylene (heat shrinkable tube) to ensure that it is isolated from aluminum tube by moisture and humid air corrosion, and its service life is more than 20 years. The copper tube has not been treated with antiseptic.
Third, energy-saving advantages: the lower the heat transfer efficiency, the more energy-saving, and the thermal conductivity of copper is 1.8 times that of aluminum, so the use of copper-aluminum connecting pipes will be beneficial to the insulation of connecting pipes, reduce the waste of cold energy and improve the energy-saving level;
Fourthly, it has excellent bending performance and is easy to install and move. Aluminum pipe is softer than copper pipe, and the design wall thickness of aluminum pipe of copper-aluminum connecting pipe is 1.5 times of that of copper pipe, which not only ensures the strength, but also is easier to install and move than all-copper connecting pipe.