What is the core of a car evaporator
Automobile evaporator core is a key component in the air conditioning system of an automobile, mainly responsible for the cooling function. When the air conditioning is turned on, the refrigerant evaporates in the core of the evaporator, absorbing heat from the surrounding air, making the passing air cool, thus achieving the cooling effect .
Structure and Working principle
The core of an automotive evaporator is usually composed of various pipes and heat sinks, and its shape is similar to that of a condenser but narrower, smaller and thicker. It is installed in the bellows behind the dashboard and uses a blower to cool and dehumidify outside or inside the vehicle through the core of the evaporator .
The core of the evaporator uses the principle that the liquid refrigerant at low temperature and low pressure absorbs a large amount of heat when evaporating, cools the natural air blown by the blower, and then sends the cold air into the carriage to lower the temperature inside .
Type and Material
There are various types of core bodies for automotive evaporators, including tube sheet type, tube strip type and stacked type, etc. The structure and heat transfer efficiency of each type are different:
Youdaoplaceholder0 Tube and sheet evaporator : Composed of copper or aluminum round or flat tubes and aluminum fins, it has a simple structure but low heat transfer efficiency.
Youdaoplaceholder0 Tube and strip evaporator : Made by welding porous flat tubes and serpentine heat dissipation aluminum strips, the heat transfer efficiency is about 10% higher than that of the tube and sheet evaporator.
Youdaoplaceholder0 Stacked evaporator : Composed of two complex-shaped aluminum plates stacked together to form the refrigerant channel, it has the highest heat transfer efficiency and a compact structure .
Maintenance and upkeep
To ensure the normal operation of the evaporator core, it is recommended to clean the evaporator regularly. Since evaporators are concealed and prone to accumulate dust and impurities, regular cleaning can keep them in good working condition and extend their service life .
Youdaoplaceholder0 The main functions of the core of an automotive evaporator include refrigeration, dehumidification and air quality regulation . The core of the evaporator absorbs heat through the evaporation of the refrigerant, cooling the air inside the vehicle and providing a comfortable environment for the driver and passengers. Specifically:
Youdaoplaceholder0 Refrigeration : When the air conditioning system is working, the liquid refrigerant absorbs heat from the surrounding air in the evaporator core and vaporizes rapidly, thereby reducing the temperature of the air flowing through the evaporator. This process is similar to the evaporation of water vapor taking away heat, making the interior COOL and pleasant .
Youdaoplaceholder0 Dehumidification : When air comes into contact with the surface of the cooler evaporator, the water vapor inside condenses upon cooling, forming water droplets that gather and are drained out of the vehicle through the drainage system. This NOT ONLY reduces the humidity of the air inside the vehicle, but also prevents the Windows from fogging up, improves driving safety .
Youdaoplaceholder0 Regulating air quality : During the contact with the air, the core of the evaporator can adsorb and filter some fine particles such as dust and pollen, assisting in purifying the air inside the vehicle and reducing irritation to the respiratory tracts of drivers and passengers .
Youdaoplaceholder0 Stability : The performance of the evaporator core directly affects the performance of the entire automotive air conditioning system. A well-performing evaporator can ensure the stable evaporation and heat absorption of the refrigerant, making the cooling effect of the air conditioning system continuous and uniform. If the evaporator malfunctions, such as clogging or leaking, it will directly affect the cooling effect and even cause the air conditioner to fail to work properly .
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