Radiator design principle

When we use household appliances daily, they need to operate to generate heat. Since they are heated, they must be cooled. Otherwise, the appliances will easily fail due to excessive temperature. Many times the radiators have problems, the appliances will follow. problem appear. Then the role of the radiator is so large, what is the design principle of it, and what is its role? Let's study it together.

Radiator design principle

To understand the design principle of the heat sink, let us first look at the way heat transfer is done.

The heat dissipation method refers to the main way in which the heat sink emits heat. In thermodynamics, heat dissipation is heat transfer, and there are three main ways of heat transfer: heat conduction, heat convection, and heat radiation.

First, heat conduction. When the substance itself or when it comes into contact with matter, the transfer of energy is called heat conduction, which is the most common form of heat transfer. For example, the way in which the CPU heat sink base is in direct contact with the CPU to remove heat is heat conduction.

1. Heat convection refers to the heat transfer mode of the flowing fluid (gas or liquid) to the tropics. In the heat dissipation system of the computer case, the "forced heat convection" heat dissipation method that drives the gas flow is more common.

Second, thermal radiation refers to the transfer of heat by ray radiation, the most common daily solar radiation. These three heat dissipation methods are not isolated. In the daily heat transfer, these three heat dissipation methods are simultaneous and work together.

So what is the design principle of the heat sink? In the thermal design of electronic equipment, the profile radiator has been widely used due to its simple structure, convenient processing and good heat dissipation effect. It consists of ribs and pedestal. The main geometric parameters include rib length, rib thickness, number of ribs, base thickness, base width and so on. When selecting a heat sink, it is generally necessary to choose according to the heat resistance of the heat sink. At the same time, the following points must be considered: the space allowed for installing the heat sink, the air flow rate, and the cost of the heat sink. The heat dissipation effect of the heat sink is closely related to the heat resistance of the heat sink. The heat resistance of the heat sink is related to the heat sink material, the shape and size of the heat sink, the installation method and the environmental ventilation conditions. No precise mathematical expression can be used to calculate the thermal resistance of the heat sink, usually through actual measurements. The effective area of ​​the heat sink is closely related to the geometry of the heat sink.

The role of the radiator

Knowing the design principle of the heat sink, we can roughly know its role. A radiator is a general term for a series of devices used to conduct and release heat. At present, the radiator mainly includes a heating radiator and a computer radiator. The heating radiator can be divided into several types according to the material and the working mode. The computer radiator can be divided into several types according to the use and the installation method.

1. Function: Increase the air flow rate and flow rate through the radiator to enhance the heat dissipation capacity of the radiator and cool the engine accessories.

2. Installation position: The fan is mostly axial flow type, installed between the engine and the radiator, and is driven coaxially with the water pump. The fan is screwed onto the pulley or flange of the front end of the pump shaft.

3. Related factors of fan fan air volume: The fan air volume of the fan is mainly related to the diameter, rotation speed, blade shape, blade mounting angle and number of blades of the fan.

In fact, the same appliances are not durable, and the quality of the radiator is also closely related. Many times, the appliance is faulty and does not need to be re-purchased. It may be that the radiator is out of order. At this time, only the radiator needs to be replaced, and the appliance can be restarted. After reading the Xiaobian finishing is the function of the radiator design and the role of the radiator, I hope you can have a deeper understanding of this product.