Liquid cooling plates are essential components in advanced thermal management solutions, used extensively across various industries such as electronic devices, electric vehicle batteries, data center servers, laser equipment, and wind power systems. They operate by circulating liquid within the plate, efficiently transferring heat away from the heat-generating components. The Tube-in-Plate liquid cold plate design is one of the most common and effective types of liquid cooling plates.

Design Features:

• Structure

  Copper or stainless steel tubes are embedded within a metal plate (such as aluminum or copper), with the liquid flowing through the tubes.

• Tube Layout

  The tube layout can be designed in linear, serpentine, or U-shaped patterns, depending on the application requirements and cooling performance needed.

Production Process of Tube-in-Plate Liquid Cold Plate:

The production process for liquid cooling plates is more complex than that of conventional air-cooled heat exchangers, requiring a higher level of reliability in manufacturing processes. Manufacturers with solid technical expertise are needed to provide reliable technical support. Some of the common manufacturing techniques for liquid cold plates include:

Embedded Tube Process (Buried Tube Process):

This process involves embedding copper tubes into an aluminum base plate, which is a widely used method in liquid cold plate manufacturing. Typically, the aluminum base is milled using CNC machines to create grooves, and then the pre-bent copper tubes are pressed onto the aluminum base using a stamping machine. Afterward, the tubes are brazed and welded, followed by post-processing to form the final water-cooling plate.

There are four main variations of the embedded tube process:

1. Shallow-Embedded Tube Liquid Cold Plate

   This design allows for single-side mounting. The copper tubes are flattened and milled together with the aluminum plate, optimizing heat transfer efficiency by utilizing the high thermal conductivity of copper. Additionally, it reduces weight and helps control costs by taking advantage of aluminum’s lightweight properties.

2. Deep-Embedded Tube Liquid Cold Plate

   Similar to the shallow-embedded tube design but with deeper tube embedment for higher thermal management capabilities.

3. Welded Tube Process

   Tubes are welded into place, providing a more robust connection.

4. Double-Sided Clamped Tube Liquid Cold Plate

   Tubes are clamped between two metal plates, offering higher durability and uniform heat distribution.

The difficulty of manufacturing and the technical complexity of these processes are relatively similar. These liquid cooling principles, originally designed for high-power switching devices, can also be adapted for use in power battery cooling systems.

Advantages of Tube-in-Plate Liquid Cold Plates:

• Manufacturing Simplicity

  The tube-in-plate liquid cold plate design is relatively simple to manufacture and cost-effective.

• Maintenance and Replacement

  It is easy to maintain and replace the tubes, making it a convenient option for applications requiring periodic maintenance or upgrades.

Disadvantages:

• Lower Heat Transfer Efficiency

  Compared to microchannel designs, tube-in-plate systems have lower thermal conductivity due to the thermal resistance between the tubes and the plate.

• Heavier Weight

  The presence of tubes and the overall structure results in a relatively heavier design.

Applications:

• Industrial Equipment

  Tube-in-plate cold plates are often used in cooling industrial machinery that generates substantial heat.

• Wind Turbine Cooling

  The design can be applied in cooling systems for wind power generators, where heat dissipation is crucial.

• Electronics Cooling

  Electronic devices that require efficient cooling systems, such as servers in data centers, also benefit from tube-in-plate cold plates.

Conclusion:

The Tube-in-Plate liquid cold plate design is a reliable and cost-effective solution for various high-performance cooling applications. Although it may have lower thermal efficiency compared to other designs, its simplicity in manufacturing and ease of maintenance make it a popular choice for industries such as industrial equipment, electronics, and renewable energy systems. Depending on the application, different variations of the embedded tube process can be chosen to meet specific thermal management needs effectively.