1, different cooling modes:
(1) Water cooling uses a water tower to dissipate heat through water circulation, and there is no metal radiator.
(2) Air cooling means that the fan and radiator exchange heat and dissipate heat, and the heat is taken away by the wind.
2. Different media:
(1) air cooling, which uses wind as a heat dissipation medium, but the medium is actually air. Low efficiency, convenient installation and small floor space.
(2) Water cooling refers to the use of water as a heat dissipation medium. High efficiency, large area, need to install professional cooling tower.
3. Different applications:
(1) Due to the limitation of environment and space, air-cooled household air conditioners are generally adopted. Even a small central air conditioner has simple structure and convenient installation.
(2) Commercial air conditioners need large refrigeration power. In order to reduce energy consumption and improve energy efficiency, water-cooled units are basically used.
3. Different cooling effects: the air cooling system is not as fast as the water cooling system, and the cooling effect of the water cooling system is obvious.
Second, the advantages and disadvantages of water cooling and air cooling:
1, advantages and disadvantages of water cooling:
Advantages: better heat dissipation performance and faster heat dissipation.
Disadvantages: the power consumption is relatively large, the sound is relatively loud, and the installation is more troublesome and the price is relatively expensive.
2. Advantages and disadvantages of air cooling:
Advantages: simple installation, low noise, low power consumption and low price.
Disadvantages: it is not as good as water cooling, and the heat dissipation performance will be slightly insufficient in summer.
Extended data
Working principle of water cooling
A water-cooled (liquid-cooled) cooling system must have the following components: water cooling block, circulating liquid, water pump, pipeline and water tank or heat exchanger.
The water cooling block is a metal block with water channels inside, which is made of copper or aluminum. It is in contact with the CPU and will absorb the heat of the CPU. Therefore, the function of this part is the same as that of air-cooled radiator. The difference is that the water cooling block must have a water channel through which the circulating liquid passes, and it is completely closed, so as to ensure that the circulating liquid will not leak out and cause electrical short circuit.
The function of circulating liquid is similar to air, but it can absorb a lot of heat and keep the temperature unchanged. If the liquid is water, it is a well-known water cooling system.
The function of the water pump is to push the circulating liquid to flow, so that the liquid absorbing CPU heat flows out of the water cooling block on the CPU, and the new low-temperature circulating liquid continues to absorb CPU heat.
The water pipe connects the water pump, the water cooling block and the water tank, and its function is to make the circulating liquid circulate in a closed channel without leakage, thus making the liquid-cooled heat dissipation system work normally.
The water tank is used to store circulating liquid, and the returned circulating liquid releases the heat of CPU here, and the circulating liquid with low temperature flows into the pipeline again. If the heating power of CPU is small, the large-capacity circulating liquid stored in the water tank can ensure that the temperature of circulating liquid will not increase obviously.
If the CPU power is high, it is necessary to add a heat exchanger to help the CPU dissipate heat. The heat exchanger here is like a radiator. The circulating liquid transfers heat to the heat sink with large surface area, and the fan on the heat sink takes away the heat flowing into the air.
If it is a small closed liquid cooling system, the open water tank can be omitted, and the liquid can flow back and forth between the water pump, the water cooling block and the heat exchanger, so as to prevent the circulating liquid from deteriorating when exposed to the air.
Characteristics of air cooling and heat recovery
(1) One machine has multiple functions, which can not only provide indoor refrigeration/hot air conditioning, but also provide domestic hot water all day, and is not affected by climate change, which not only saves the investment and operation cost of hot water boilers, but also avoids the dependence of solar water heaters on climate.
(2) Energy conservation and environmental protection. The heat recovery device can recover the condensation heat of the unit to produce hot water, which not only saves energy consumption, but also avoids the thermal pollution caused by the discharge of condensation waste heat into the air and the greenhouse effect caused by carbon dioxide generated by boiler combustion.
(3) Save space. The hot water supply device of the heat recovery unit is generally built in the unit, and there is no need to provide any additional installation space for the heating equipment.
(4) Stable and reliable. Because there are no moving parts in the heat recovery device, the equipment runs stably and reliably, and there is no need to invest a lot of operation and maintenance personnel. At the same time, because there is no need to add other large-load electrical control equipment, the impact on the system power grid when the equipment is started and stopped is small, which not only saves the cost of circuit equipment but also reduces potential safety hazards.
(5) improve performance. The use of heat recovery device is beneficial to improve the performance of air conditioning system, improve the energy efficiency ratio of the unit and prolong the service life of the unit.
Baidu encyclopedia-air cooling, Baidu encyclopedia-water cooling