Copper-aluminum composite radiators offer excellent cost-effectiveness. Both copper and aluminum have outstanding thermal conductivity, making their heat dissipation performance significantly better than other materials. The cost-to-heat ratio of these radiators is also far superior to alternatives. Since copper and aluminum are non-ferrous metals, their market value tends to increase over time, which means copper-aluminum radiators can also serve as a good hedge against inflation.
These radiators also exhibit strong mechanical properties. Aluminum alloy profiles are widely used in the construction industry due to their high strength, excellent water and air tightness, good thermal conductivity, attractive appearance, and ease of processing. In recent years, the advantages of thermal conductivity have drawn attention from many radiator manufacturers, leading to increased adoption of this material.
Another key advantage is their resistance to alkaline water corrosion, ensuring a long service life. High-quality copper-aluminum composite radiators are produced using advanced internal flange hydraulic expansion technology. This precise process eliminates any gaps between the copper tube and the aluminum profile, preventing corrosion without the need for internal anti-corrosion treatment. Under high-alkalinity conditions, with a corrosion rate of about 0.005 mm per year, these radiators can last over 50 years, providing more than enough safety margin. This ensures a service life of over 30 years even under harsh conditions.
The copper-aluminum composite panel-type heating radiators are highly versatile. They are made by combining copper tubes with aluminum profiles 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. Their efficient heat dissipation—through both radiation and convection—makes them suitable for all types of heating systems.
However, there are potential issues with the connection between copper tubes and aluminum wing profiles. Currently, the copper pipe and aluminum profile are joined using either mechanical or hydraulic expansion. If the copper pipe’s thickness is uneven or the material is inconsistent, gaps may form over time between the copper and aluminum parts, reducing the radiator’s efficiency. Proper manufacturing techniques and quality control are essential to avoid such problems and ensure long-term performance.
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