Performance advantages of copper-aluminum finned heat exchangers

Electronic radiatorCopper pipe aluminum fin convector complies with national industrial policies and standards, and is a new product that has emerged in recent years. The overall structure design of the product is advanced, with good decorative appearance, reliable manufacturing process, good thermal performance, and low metal consumption. It is currently the most cost-effective product among similar domestic products, closely matching the thermal price of cast iron, thus having strong market competitiveness.

Its superior performance is mainly reflected in the following aspects:

1. Precision processing, high quality, low price

Advanced manufacturing process ensures product quality: The product has good processability from parts to components, with a complete equipment and process production system. The material utilization rate is greater than 95%, quality is reliable, and it facilitates the adoption of new processes, ensuring reliable product quality. It is the most technically sustainable product.

Most suitable for large-scale production; the higher the output, the lower the cost, fundamentally eliminating the competition between small enterprises and large enterprises in other types of radiators.

Low price, low initial investment: This product has an advanced overall structure design, good decorative appearance, reliable manufacturing process, and good thermal performance. It is currently the most cost-effective product among similar domestic products, closely matching the thermal price of cast iron. The thermal price is generally within 0.30 yuan/W, equivalent to that of steel finned tube convectors, cast iron column-type radiators, and some aluminum radiators. For higher quality and higher-grade products, the maximum thermal price does not exceed 0.40 yuan/W.

2. Good thermal performance; efficient, lightweight, energy-saving, and material-saving

Material guarantee: Copper and aluminum are both excellent heat transfer materials. Radiators made from them have high heat dissipation efficiency and large heat output with high metal thermal strength.

Process guarantee: High-precision secondary finned heat sinks increase the contact area between copper pipes and aluminum fins, thereby increasing the heat transfer coefficient and improving K value. Copper pipes facilitate automated welding; their welding and processing performance is better than that of steel pipe radiators, making them safe and reliable.

Heat dissipation core structure guarantee: The product design is advanced; its heat dissipation core adopts a nationally patented four-pipe core structure to ensure sufficient cold ventilation area for the fins. The layout of the fins varies according to different widths of different products using inclined or layered settings. Therefore, the product has good thermal performance with a heat dissipation index less than 1.3, featuring high heat output at low water temperatures and low water flow rates—making it an ideal radiator for temperature-controlled heating systems.

Convection heat chamber structure guarantee: Side air intake and top air outlet convection radiator technology forms a heat chamber that can generate significant lift to promote air convection circulation, thereby increasing heat dissipation.

Energy-saving operation at low water temperatures: The water temperature in heating systems using copper radiators can be lower than that of other types (cast iron radiators: 70-95°C; steel radiators: 60-75°C), significantly reducing heat loss during hot water transmission and saving fuel consumption.

Small volume, high thermal value; convenient replacement design suitable for engineering promotion: Under the same volume, it has a very high thermal value of over 2500W per meter length. It can be easily swapped with old cast iron radiators. Our factory can produce radiators with any required thermal output based on design and room requirements, meeting design needs while avoiding the trouble of increasing investment by selecting larger thermal outputs.

3. Compatible with various water qualities; corrosion-resistant; long service life.

Unlike steel radiators that are susceptible to oxidation corrosion or aluminum radiators that are vulnerable to alkaline water corrosion, this product has strong adaptability that reassures users.

Steel radiators have advantages such as aesthetic appearance, diverse forms, and high overall strength; however, their biggest issue is their inability to resist oxidation corrosion. Currently, most heating systems in China are still open systems. In springtime when the medium inside the radiator is released, a large amount of oxygen enters the humid inner wall of the steel radiator causing rapid corrosion. Additionally, plastic pipes widely used in heating systems in recent years have walls composed of large polymer particles that cannot match metal pipes in terms of density; oxygen can permeate into the heating system medium leading to poor deoxygenation effects—this represents a significant limitation for steel radiators. As steel radiator usage increases, issues related to oxidation corrosion have become increasingly severe.

Aluminum radiators: Aluminum's thermal conductivity ranks second only to copper but weighs much less than copper; thus aluminum radiators once held a significant market share among new types of radiators. However, aluminum radiators cannot be used in alkaline environments where Chinese heating systems require heating medium pH values between 10-12 to prevent scaling in boilers and heat exchangers. Untreated aluminum radiators can corrode within a week under such conditions. To address this issue, aluminum radiators are mandated to undergo internal anti-corrosion treatment using methods such as coatings, enameling, chrome plating, or powder coating; however none of these processes offer reasonable processability or cost-effectiveness nor provide effective means for complete inspection. Consequently, composite radiators replacing water-carrying components with copper pipes exhibiting good anti-corrosion properties have emerged due to their strong adaptability; their market share has rapidly increased making them now second only to steel radiators among lightweight options.

All-copper waterway radiators are excellent products suitable for China's national conditions with distinctive Chinese characteristics; it is foreseeable that they will develop rapidly in the coming years capturing a significant portion of the radiator market.

4. Good environmental protection.

Production is pollution-free with low metal consumption and low energy consumption during manufacturing.

Copper pipe aluminum fin convectors made from copper pipes for water flow and aluminum fins for heat exchange feature a steel outer shell for enhanced mechanical strength while plastic air outlets are aesthetically pleasing and easy to clean. They are lightweight yet beautiful with low metal consumption while maintaining high metal thermal strength.

In terms of weight, each kW requires half or even one-tenth the metal weight compared to cast iron. From a mining development perspective this also represents deep processing of materials leading to more rational material utilization. Therefore developing lightweight radiators is not only a necessity for construction but also an inevitable historical trend.

Usage is also pollution-free; especially there is no pollution within pipelines unlike most current cast iron radiators which pollute water quality due to incomplete internal sand cleaning or some steel radiators which rust leading to contamination—making them suitable for temperature control valves and heat meters used in individual metering systems.

5. Stable performance, high pressure resistance, wide range of applications.

Stable performance, suitable for household metering systems, can frequently alternate between hot and cold, with flow often changing.

Household metering encourages users to frequently turn the heating system on and off, keeping the system in a state of frequent hot and cold alternation, requiring the water pipes to have good low-temperature resistance and low thermal expansion coefficient.

Copper pipes better meet this requirement and are suitable for household metering.

The water capacity of radiators can be designed to be small, with a short startup time, which is beneficial for household metering systems.

High pressure resistance. Suitable for high-rise buildings.

The bursting pressure of a 22mm diameter copper pipe reaches 20000kPa, more than ten times that of the water pressure in general high-rise buildings.

6. Compact structure, strong decorative effect.

Small indoor footprint; the outer cover is beautiful and easy to clean, eliminating the need for additional heating covers during interior decoration, saving investment and facilitating full heat dissipation for heating.

7. Few interfaces, lightweight, high strength.

Easy to transport and install, reducing the load on the building. The overall structure of the heat dissipation core and its unique fixing method make it very convenient to change the direction of the heat dissipation core left and right, with no restrictions on ordering and on-site installation. The ingeniously designed outer cover: new shape, lightweight, with a movable panel structure that facilitates cleaning dust from the internal heat dissipation core.

Summary:

The copper pipe aluminum fin type convective radiator is a new development in recent years. It combines conduction, radiation, and convection mechanisms of metal materials to fully explore the heat dissipation function of radiators, representing the latest achievements in technological progress. This type of radiator uses new technologies and processes to effectively solve issues related to pipe connections and internal corrosion prevention. The convective heat dissipation avoids burns while ensuring uniform indoor temperature without cold corners. As some industry insiders have metaphorically stated: radiant heaters provide warmth like sunshine; convective heaters offer warmth akin to a true spring day. Moreover, convective heaters have high metal thermal strength and pressure resistance, making them especially suitable for thermal metering and high-rise buildings. At the same time, they enhance decorative functionality, achieving significant breakthroughs in taste and decoration. It can be said that this represents a qualitative leap in technological progress within the radiator field.

Copper pipe aluminum fin radiators fundamentally solve corrosion issues while being high-pressure resistant, highly decorative, lightweight, and moderately priced. They adapt to the trend of international radiators moving towards more precise room temperature adjustments, allowing people to better enjoy a comfortable life created by technological advancements. They are the preferred product for metered heating and individual household heating.