Review and choose common cooling way
Cooling mode refers to the main way of the heat radiator. In thermodynamics, the heat is the heat transfer and heat transfer way there are three main types: heat conduction, convection and radiation. Substance itself or when in contact with the material, the energy transfer is called a heat conduction, this is one of the most common way of heat transfer. For example, CPU heat sink base take direct contact with the CPU heat is heat conduction. Heat convection refers to the flow of fluid ( Gas or liquid) Will go tropical way of heat transfer in the cooling system of computer case is more common in the cooling fan drive gas flow & other; Forced convection & throughout; The cooling way. Thermal radiation refers to rely on the radiation heat transfer, everyday is the most common solar radiation. The three thermal radiation are not isolated, in daily heat transfer, the three thermal radiation is happening at the same time, work together.
in fact, any type of radiator is basically at the same time using the above three ways of heat transfer, just different emphasis. Such as common CPU cooling fan, CPU heat sink, direct contact with the surface of the CPU heat through heat conduction on the surface of the CPU is passed to the CPU heat sink; Cooling fan CPU radiator air flow through the heat convection is generated on the surface of the heat away; And the flow of the air inside the case is CPU heat sink of the surrounding air by convection heat away, until the case outside; At the same time all around the part of high temperature on low temperature part of the thermal radiation.
the radiator of the heat radiator thermal conductivity of materials, materials and the heat capacity of heat medium radiator and radiator area of effective heat dissipation and so on related parameters.
in accordance with the heat away from the radiator, the radiator can be divided into active and passive cooling heat dissipation, the former is common air cooling heat sink, while the latter is common heat sink. Further subdivided the cooling mode, can be divided into air-cooled, heat pipe, cools, semiconductor refrigeration, refrigeration compressor, etc.
water cooling is the most common, and very simple, is to use the fan to take away the heat absorption by the radiator. Has a relatively low price, the advantages of simple installation, but rely on high to the environment, such as the temperature rises and overclocking when the heat dissipation performance will be affected.
surface is the use of liquid in the pump drive away forced circulation heat radiator, the quiet, cool stability compared with air cooling less dependence on environment, etc. , etc. But the higher price of the heat pipe and cools, and installation is relatively some trouble.
heat pipe is a kind of high heat conduction performance of the heat transfer element, it through the liquid evaporation and condensation in the vacuum tube to transmit heat, it use wool absorption function of fluid principle, have the similar refrigerator compressor refrigeration effect. Has a very high thermal conductivity, excellent isothermal property, heat and cold on both sides of the heat transfer area can be arbitrary change, which can be heat transfer and temperature can be controlled at a series of advantages, and composed of a heat pipe heat exchanger has high heat transfer efficiency, compact structure, small fluid resistance loss, etc. Due to its special heat transfer characteristics, so it can control the tube wall temperature, avoid dew point corrosion.
when a cooling device of choose and buy, can according to their actual needs, and economic conditions to choose and buy, the principle is enough.
