Copper-aluminum composite radiators offer excellent cost-effectiveness. Copper and aluminum are known for their high thermal conductivity, making them far superior to other materials in heat dissipation performance. Their heat-to-price ratio is also significantly better than that of alternative materials. Since both copper and aluminum are non-ferrous metals, their value tends to increase over time, giving these radiators a strong hedge against inflation.
In terms of mechanical properties, copper-aluminum radiators perform well overall. Aluminum alloy profiles are widely used in the construction industry due to their high strength, good water and air tightness, efficient heat conduction, attractive appearance, and ease of processing. In recent years, the excellent thermal conductivity of aluminum has made it increasingly popular among radiator manufacturers.
These radiators also exhibit strong resistance to alkaline water corrosion, contributing to a long service life. High-quality copper-aluminum composite radiators are manufactured using advanced internal flange hydraulic expansion technology. This precise process eliminates any gaps between the copper tubes and aluminum profiles, ensuring a tight bond. As a result, no internal anti-corrosion treatment is required. Under conditions of high-alkalinity water, with an annual corrosion rate of about 0.005mm/year, they can last over 50 years, providing more than 30 years of reliable use.
They are also highly adaptable. The copper-aluminum panel-type heating radiator consists of copper tubes and aluminum profiles, which are tightly joined through high-pressure expansion using specialized equipment. This results in a compact, aesthetically pleasing design that is easy to clean, lightweight, and capable of withstanding high pressure. It provides excellent heat dissipation through both radiation and convection, making it suitable for all types of heating systems.
However, one potential issue lies in the connection between copper tubes and aluminum wings. Currently, this connection is achieved through mechanical or hydraulic expansion. If the copper tube’s thickness is uneven or the material is inconsistent, gaps may form over time between the copper and aluminum parts, leading to reduced efficiency and cooling performance. Proper manufacturing techniques are essential to avoid such issues and ensure long-term reliability.
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