The Heat Dissipation Method Of The Radiator

The heat dissipation method refers to the main way in which the radiator dissipates heat. In thermodynamics, heat dissipation is the transfer of heat, and there are three main ways of heat transfer: conduction, convection, and radiation. The transfer of energy through matter itself or when matter comes into contact with matter is called heat conduction, which is the most common form of heat transfer. For example, the direct contact between the CPU heat sink base and the CPU to remove heat belongs to thermal conduction. Thermal convection refers to the way in which a flowing fluid (gas or liquid) transfers heat along a tropical path. In the cooling system of a computer case, the commonly used method is "forced thermal convection" where a cooling fan drives the flow of gas. Thermal radiation refers to the transfer of heat through radiation, with the most common being solar radiation. These three heat dissipation methods are not isolated, and in daily heat transfer, they all occur simultaneously and work together.
In fact, almost all types of radiators will use the above three heat transfer methods simultaneously, with different emphasis. For example, in a regular CPU heat sink, the CPU heat sink is in direct contact with the CPU surface, and the heat on the CPU surface is transferred to the CPU heat sink through thermal conduction; The cooling fan generates airflow and carries away the heat on the surface of the CPU heat sink through thermal convection; The flow of air inside the chassis is also carried away by thermal convection, which takes away the heat from the air around the CPU heat sink until it reaches the outside of the chassis; At the same time, all parts with high temperatures will emit thermal radiation to the surrounding parts with low temperatures.
The heat dissipation efficiency of a radiator is related to parameters such as the thermal conductivity of the radiator material, the heat capacity of the radiator material and heat dissipation medium, and the effective heat dissipation area of the radiator.
According to the way heat is taken away from the radiator, it can be divided into active heat dissipation and passive heat dissipation. The former is commonly air-cooled radiator, while the latter is commonly radiator fins. Further subdivision of heat dissipation methods can be divided into air cooling, heat pipe, liquid cooling, semiconductor cooling, compressor cooling, and so on.
Air cooling is the most common and very simple method, which is to use a fan to remove the heat absorbed by the radiator. It has the advantages of relatively low price and simple installation, but it is highly dependent on the environment, such as high temperature rise and overclocking, which will greatly affect its heat dissipation performance.
A heat pipe is a type of heat transfer element with extremely high thermal conductivity. It transfers heat through the evaporation and condensation of liquid inside a fully enclosed vacuum tube. It uses fluid principles such as capillary suction to achieve a cooling effect similar to that of a refrigerator compressor. A heat exchanger composed of heat pipes has a series of advantages such as extremely high thermal conductivity, good isothermal properties, adjustable heat transfer area on both hot and cold sides, long-distance heat transfer, and temperature control. It also has high heat transfer efficiency, compact structure, and low fluid resistance. Due to its unique heat transfer characteristics, the temperature of the pipe wall can be controlled to avoid dew point corrosion.
Liquid cooling is the use of liquid to forcefully circulate and remove heat from the radiator under the drive of a pump. Compared with air cooling, it has the advantages of quietness, stable cooling, and less dependence on the environment. But the prices of heat pipes and liquid cooling are relatively high, and installation is also relatively more complicated.
When choosing a radiator, you can choose according to your actual needs and economic conditions, and the principle is that it is sufficient.