As far as the cooling methods are concerned, they can be divided into two types, passive cooling and active cooling. In the active cooling, they can be divided into air cooling, water cooling, liquid cooling, heat pipe radiator, semiconductor refrigeration chip cooling, compressor auxiliary cooling and liquid nitrogen cooling.
1. Passive heat dissipation of heat sink means passive heat dissipation, that is to say, the heat accumulated on the chip is taken away by heat conduction through the contact between the heat sink itself and the chip without the help of other auxiliary heat dissipation methods. However, at present, the manufacturing of computer parts is becoming more and more complicated, and the instantaneous heat generation is amazing. Only passive heat dissipation can not meet the needs of CPU heat dissipation, so now we can only see this heat dissipation method on those motherboards' north-south bridge control chips or some graphics display chips with low heat generation. 2. Air-cooled heat dissipation Air-cooled heat dissipation is the most common and most used heat dissipation method, which belongs to active heat dissipation. This heat dissipation method can solve our usual heat dissipation needs, and it is mature in technology and moderate in price, so it is widely used in the market.
The air-cooled radiator is simple in structure, low in price, safe and reliable. However, it also has some disadvantages, such as it can't lower the temperature below room temperature, and it is noisy because of the rotation of the fan, and if it is improperly installed, it will cause the fan to vibrate, which will damage the computer components in the long run, and the life of the fan is limited by time.
3. As the name implies, water cooling is to use water instead of air, and take away excess heat between fins through heat convection through the movement of water. The working principle of the water cooling system is very simple, that is, the water is pumped out of the water reservoir by the water pump and flows into the heat exchanger covered on the CPU through the water pipe, and then the water comes out from the other port of the heat exchanger and flows back to the water storage tank through the water pipe, so that the heat is continuously circulated and taken away from the surface of the CPU.
the whole water cooling system includes heat exchanger, circulation system, water tank, water pump and water. The cooling capacity of water cooling system is very strong, which is very suitable for some overclocking enthusiasts.
4. strictly speaking, the principle of liquid cooling heat dissipation is the same as that of water cooling heat dissipation, and the heat dissipation methods they adopt are the same, but the difference is that heat-conducting silicone oil flows in the circulation system instead of water, which has obvious benefits, and it will not cause computer hardware damage due to the damage of the circulation system. Aucma liquid-cooled radiator sold in the market at present belongs to this kind of radiator.
in addition to the active heat dissipation methods described above, there are heat pipe heat dissipation, semiconductor refrigeration sheet heat dissipation, compressor refrigeration heat dissipation, liquid nitrogen heat dissipation, etc. Because these methods are difficult for most users to realize, I will not introduce them in detail here. Which one is better in the face of a wide variety of air-cooled radiators in the market? It seems that only after understanding the secret of air-cooled heat dissipation can we learn to correctly identify air-cooled radiators. In fact, the structure of air-cooled radiator is not complicated, which usually includes three parts-radiator, fan and fastener.
only when these three parts meet the requirements can the radiator have a stable and reliable heat dissipation effect. So what kind of design and products can meet the requirements? This article is from the computer knowledge information network. Thank you for your support.
2. How much do you know about computer cooling fan cooling knowledge
Is the fan blade odd or even?
It is estimated that many small partners have not paid special attention to the fan blades. Count your fan blades carefully to see if they are odd or even. In the past radiator fans, even-numbered blades were often seen, and the blades were opposite to each other. If this kind of fan is used for a long time, such as the blades are worn or too much dust is accumulated, the center of gravity will easily shift, so that the fan will have the problems of increased noise and poor rotation.
recently, odd blades are basically used in fans, and the center of gravity is determined by all blades at the same time. Even if individual blades are worn or deposited, the deviation of the center of gravity is relatively small, and of course the noise is much smaller. Therefore, I recommend that when you buy a radiator, you might as well count the number of blades first and try to choose products with odd blades.
At the same time, the blade shape of the fan is also very particular, so friends can pay attention to it. Generally speaking, high-speed fans should choose curved and swept blades, because they are more suitable for high-speed rotation and have lower noise. Straight blades are more suitable for low-speed fans, and their blowing coverage area is larger, especially suitable for the top of the chassis, notebook brackets and other places.
how much do you know about computer cooling fan cooling? There are many doorways inside!
Straight blades are generally used for low-speed and large-diameter fans. Note that this fan also uses even blades that are easier to design and manufacture.
Multiple fans = more money!
it is a development trend to use multiple fans in the heat sink of processors and graphics cards, but many small partners probably didn't think that if used improperly, multiple fans may not greatly improve the heat dissipation capacity, but may cause particularly obvious problems such as vibration and noise. On some multi-fan graphics cards, we can see fan configurations with reverse rotation or different sizes, which can avoid the vibration problem and reduce vibration and noise.
how much do you know about computer cooling fan cooling? There are many doorways inside!
Gigabyte AORUS GeForce GTX 18Ti adopts the design of counter-rotating middle fan, which can avoid * * * vibration
how about vertical radiator?
at present, there are still some CPU radiators that use vertical heat sinks and need to install their own fans. I suggest that you also adopt the installation method of rotating in different directions when installing, which can also avoid the problem of * * * vibration and reduce vibration and noise. In addition, the fan facing the memory side should choose the air suction mode, which can suck the dust near the memory as far as possible and reduce the poor contact caused by dust accumulation here.
how much do you know about computer cooling fan cooling? There are many doorways inside!
overclocking three Huanghai series CPU radiator, the fan is symmetrical on both sides, so the installation direction of this fan can be selected
3-pin or 4-pin, which is not a problem!
At present, there are mainly two kinds of power connectors for PC fans, which are designed with 3-pin and 4-pin respectively. The extra pins of the 4-pin connector are mainly used to transmit some control signals, such as judging whether there is a fan installed on this interface, and transmitting fan speed information and control signals. The independent detection and control ability of the 4-pin interface fan is more accurate and safe than that of the 3-pin interface, so it is recommended that you choose the 4-pin interface fan product when the price is not much different.
Finally, I would like to share with you the fastener problem. At present, fans are all compatible with multiple platforms. However, some products should be designed with special attention, especially many people on the Internet have shared their experience. Products like the old "Anti-human 4" should be carefully selected (the new version is fine), otherwise it will be miserable to make great efforts.
3. knowledge of chassis fans
1. brief introduction how can we prevent heatstroke and cool down the computer? Generally speaking, we can use air cooling, water cooling, semiconductor refrigeration and fluorine (nitrogen) refrigeration to cool down, but these methods are not very popular in China because of their high implementation cost and possible threat to computer security.
compared with these methods, another most effective, convenient and commonly used method is to use fans and heat sinks. Speaking of CPU fans and heat sinks, they are actually used to quickly conduct the heat of CPU and blow it into the nearby air. The cooling effect is directly related to the quality of CPU cooling fans and heat sinks, so how to choose a suitable CPU fan has become a topic of great concern to us.
But at present, the market is full of fake and inferior products. If we don't know the basic knowledge about CPU fans, we will easily be deceived in the purchase process. Therefore, before we buy a fan, it is necessary to know some performance parameters of CPU fans. Once we know these criteria, I believe everyone will definitely choose a practical and suitable fan.
below, the author introduces several main performance parameters of CPU fans to everyone, hoping to help everyone. [Edit this paragraph] II. Technical specifications 1. Fan power CPU Fan (front) Fan power is a very important condition that affects the cooling effect of the fan. The greater the power, the stronger the wind power of the fan and the better the cooling effect.
and the power of the fan is directly related to the speed of the fan, which means that the higher the speed of the fan, the more powerful the fan is. At present, all the computers sold in the general computer market are DC 12V, and the power varies from .X Watt to 2.X Watt. The power among them needs to be selected according to the calorific value of your CPU. Theoretically, it is better to choose a slightly larger power, because the speed of this fan is higher.
however, I would like to remind you that we should not emphasize high power unilaterally, which needs to match the power of the computer itself. If the power is too large, it will not only not have a good cooling effect, but may increase the workload of the computer, which will lead to a vicious circle and eventually shorten the life of the CPU fan. Therefore, when choosing the power of CPU fan, we should follow the principle of sufficiency.
2. Diameter of the fan This performance parameter also has a direct impact on the air output of the fan. It means that the larger the diameter of the fan is within the allowable range, the greater the air output of the fan and the greater the application area of the wind effect. Usually, the reserved position in the main cabinet is to install 8cm*8cm axial fan. If it is not installed in the standard position, there is no such restriction, then we can choose a slightly larger fan.
for this indicator, what I want to say is that the selected fan caliber must be coordinated with the chassis structure in my computer, so as to ensure that the fan will not affect the normal work of other computer equipment, and that there is enough free space in the computer chassis to facilitate the disassembly of other accessories. 3. Fan speed The speed of the fan is inseparable from the power of the fan, and the speed directly affects the power of the fan.
generally speaking, we think that within a certain range, the higher the speed of the fan, the greater the air intake it sends to the CPU, and the better the cooling effect the CPU will get. However, once the speed of the fan exceeds its rated value, when the fan works under overload for a long time, it will generate heat itself, and the longer the time, the greater the heat generated. At this time, the fan will not only have a good cooling effect, but will "add fuel to the fire"; In addition, the fan may produce strong noise during high-speed operation, which may shorten the life of the fan for a long time; In addition, higher running speed requires more power to provide "power source", and high power source is obtained from the high power of motherboard and power supply, which will often cause system instability under overload power.
therefore, when we choose the speed of the fan, we should decide according to the calorific value of the CPU, and it is best to choose the fan with the speed between 35 and 52 rpm. CPU fan (back) 4. Fan material Because the heat of CPU is conducted to the heat sink and then blown by the cold air brought by the fan, the speed at which the heat can be conducted by the fan is determined by the material of the heat conduction sheet that constitutes the fan, so the material quality of the fan plays a decisive role in the heat conduction performance. Therefore, we must pay attention to whether the heat conductivity of the heat conduction sheet of the fan is good when choosing the fan.
At present, among the materials with good thermal conductivity, the best thermal conductivity is of course gold, and both gold and platinum are good. The reason why the AX6BC series motherboard of AOPEN will be plated with gold on the heat sink of the North Bridge chip, on the one hand, it shows its noble status, on the other hand, it is conducive to heat dissipation. The heat-conducting metal next to gold is copper, which is a metal with excellent heat conductivity. If copper is used to produce heat sinks, the heat dissipation effect will be very ideal, but copper is stronger, more difficult to process, heavier in weight and higher in cost, so it is difficult for us to see heat sinks produced by copper at present.
Next to copper are iron and aluminum, which are very popular metals. But if you compare them horizontally, you will find that iron is easy to rust, hard in texture, difficult to process and heavy in weight, while aluminum does not have these troubles, so aluminum has become the best material for producing heat sinks. 5. Fan noise Another external manifestation of measuring the quality of the fan is the noise level.
just imagine that if the noise of the fan you bought is very high, even if the other performance of the fan is very good, you will not be practical, because too much noise will greatly affect our mood of operating the computer. The noise is usually related to the power of the fan. Usually, the greater the power, the faster the rotation speed. At this time, a negative effect is shown, that is, noise.
Therefore, when we buy a fan, we must listen to the noise of the fan. If it is too loud, we'd better not buy it. Of course, the noise generated by the fan is not necessarily caused by the quality of the fan. It is also possible that the lubrication effect of the rotating shaft of the fan is not good, or the fan is not properly installed. In this case, we'd better reposition the fan or add some lubricant to the rotating shaft of the fan to protect it.
4. How to let the computer dissipate heat
1. Don't put the computer on a soft object, so there is no gap between the computer and the object, and it is not easy to dissipate heat. Not good for computers.
2. Put your hand on the air outlet of your computer and feel whether there is wind. If you are responsible, it means that your computer can dissipate heat. If you think it's not enough, look at the following.
3. Tell me a little trick to judge whether your computer should be cleaned in summer. Let your computer run at full speed for 5 minutes, or after DOTA5 for 5 minutes, it should be no problem to use Master Lu to detect that the temperature does not exceed 6 degrees. It shows that there is no problem with the heat dissipation of your computer, so you can use it with confidence. If you are not at ease, you can follow the following rules.
4. If you feel that your computer is too hot in summer, you can buy a cooling rack to help your computer cool down.
5. Another simple and feasible method is to put some supporting beverage caps under the computer. Let the computer have a certain gap with the desktop. Help the computer to dissipate heat.
5. What's the best way to cool the computer?
A. Choose the coldest place in the room to put the computer. If conditions permit, the lower the floor where the computer is placed, the better (hot air rises). The computer should be placed against the wall, and the wall facing the east where the sun rises should be chosen. Do not place electrical appliances with high calorific value around.
B. when placing the main engine, choose a position that is conducive to air circulation. There should be a certain space around the top of the chassis, especially pay attention to the various air inlets (usually in front of the chassis) and air outlets (behind the chassis) on the chassis.
C. if there is no problem with air circulation and air conditioning is installed in the room, it should be simply arranged. If your computer room is large and you use central air conditioning, you'd better turn down the temperature when using the computer and turn it off and then turn it back. There is no need to do this because the room is small.
D. Check it.