Integrated(AIO) water cooling introduction

1. Name of each component:

The water inlet pipe and the water outlet pipe are generally collectively referred to as “water cooling pipes” . The water inlet pipe and the water outlet pipe are generally designed according to the principle of “in from top and out from bottom”, but due to different production specifications of each manufacturer, it is difficult to distinguish which is the water inlet and which is the water outlet simply from the picture. The markings in the above picture are only for ease of understanding.

The fan and the water tank are generally referred to as a “water cooling radiator” . The one with a fan is active cooling, and the one without a fan is passive cooling. Active cooling has better cooling effect, and passive cooling is relatively quieter.

Coolant is also called water-cooling liquid or circulating liquid. Some products use distilled water or deionized water, while some products use special thermal transfer liquid or others. It is worth noting that if ordinary distilled water and deionized water are used, it will become weakly acidic liquid cooling after a period of time. Long-term use will cause the metal structure to rust, thus affecting the heat dissipation function of the cooling system.

2. Working principle:

The CPU transfers heat to the coolant to be heated in the water cooling head. After being heated, the coolant enters the water tank through the water inlet pipe. After the heat is dispersed by the cooling fins in the water tank and accelerated by the fan, it re-enters the water cooling head through the water inlet pipe to absorb the heat from the CPU, and the cycle repeats.

3. Factors affecting water cooling effect

Through the working principle, it is not difficult to conclude that the water cooling effect is good or not, mainly depends on four aspects:

1. The surface area of the heat sink fins and the heat transfer performance of the copper material;

2. The air volume and air pressure performance of the fan;

3. Water volume and water flow speed;

4. Sealing performance and leakage risk;

The surface area of the heat sink fins and the heat transfer properties of the copper material;

1. The larger the surface area of the heat sink, the better the heat dissipation effect;

2. The thicker the internal pipe, the faster the flow rate and the better the heat dissipation.

Our company uses aluminum

There are as many as 12 heat dissipation pipes, which ensure water flow rate while laying more pipes. At the same time, high-density cooling fins ensure maximum surface area heat dissipation.

Copper material selection

1. The larger the surface area, the better the heat dissipation effect;

2. When choosing the material of metal, the cost and thermal conductivity are the main considerations. The high cost excludes precious metals such as gold and silver. In terms of thermal conductivity, copper is 0.9 and aluminum is 0.503. The thermal conductivity is 386w/mk for copper and 198w/mk for aluminum. Obviously, copper is much better than aluminum. However, the price of copper itself is relatively high and it is relatively soft. It cannot be made by casting process, but can only be made by “drawing” or machining. Due to the difficulty in manufacturing, most of the copper heat sinks on the market are not pure copper, but copper-clad or copper-plated at the bottom. However, the mixing of the two metals will reduce the thermal conductivity and cause uneven thermal conductivity. Pure copper heat sinks also have defects. They are easy to oxidize and turn black, and the surface is not smooth. Grinding and evenly applying heat dissipation glue can solve the problem.

Our company uses pure copper C1100

The effective coverage area is 55*60mm .