The fin structure of liquid cooling plate plays an extremely critical role in improving heat dissipation performance, and it has a close synergistic relationship with heat dissipation area expansion and heat conduction.
First, the shape of the fins has a significant impact on the heat dissipation area expansion. For example, flat-plate fins have a simple structure and are easy to process. By increasing the number and length of fins, the contact area with the surrounding air can be effectively increased, allowing heat to be dissipated more widely into the air. The needle-like fins, with their unique three-dimensional structure, create more surface area in a limited space, further improving heat dissipation efficiency. Like corrugated fins, their undulating shape not only increases the area, but also disrupts the airflow to a certain extent and enhances the convection heat transfer effect of the air.
Secondly, the design of fin height and spacing is a key parameter. Reasonably increasing the fin height can expand the heat dissipation area, but too high a height may increase the air flow resistance and affect the convection heat transfer effect. Proper fin spacing can ensure smooth flow of air and allow heat to be taken away in time. For example, in the heat dissipation of some compact electronic equipment, through accurate calculation and experimental optimization, the appropriate fin height and spacing can be determined to achieve the best balance between heat dissipation area and air flow in a limited space.
Furthermore, the tightness of the connection between the fins and the liquid cooling plate matrix is directly related to the heat conduction efficiency. Good connections ensure rapid heat transfer from the base to the fins. For example, welding, brazing and other processes can be used to reduce contact thermal resistance, so that heat can be smoothly transferred from the base through which the coolant flows to the fins, and then dissipated to the surrounding environment.
In terms of heat conduction, the material selection of the fins is crucial. Metal materials with good thermal conductivity, such as aluminum alloy, are usually used. Aluminum alloy not only has a high thermal conductivity, but is also lightweight and suitable for a variety of application scenarios. When heat is conducted from the coolant inside the liquid cooling plate to the fins, the aluminum alloy fins can quickly spread the heat, creating favorable conditions for subsequent heat dissipation.
In addition, the arrangement of the fins also affects the synergistic effect. Parallel-arranged fins perform better in certain scenarios where the airflow direction is stable, while staggered-arranged fins can better guide the airflow in complex airflow environments, enhance the heat transfer effect, and promote the synergy between heat dissipation area expansion and heat conduction. effect.
From the perspective of the overall heat dissipation system, the optimization of the fin structure requires comprehensive consideration of factors such as the working environment of the liquid cooling plate, coolant flow and temperature. For example, in high-temperature environments, more attention is paid to the high-temperature resistance of fins and the maximization of heat dissipation area; in low-flow coolant conditions, the efficiency of heat conduction of the fin structure needs to be emphasized to make up for the lack of coolant heat dissipation capacity.
The fin structure of the liquid cooling plate has been carefully designed in many aspects to achieve the synergy between heat dissipation area expansion and heat conduction, thereby effectively improving the overall heat dissipation performance of the liquid cooling plate and meeting various complex heat dissipation needs.
