What parts does the automobile refrigeration system consist of? The composition and working principle of the automobile refrigeration system

What parts does a car refrigeration system consist of?

The automobile refrigeration system is designed to provide a comfortable temperature in the car. It mainly consists of the following parts:

1. Compressor: The compressor is the core component of the refrigeration system. It compresses the refrigerant to increase its temperature and pressure, and pushes the refrigerant to other components of the system.

2. Condenser: The condenser is usually located at the front of the car. It uses the principle of radiator to release heat from high-temperature and high-pressure refrigerant, causing it to cool down and turn into high-pressure liquid.

3. Evaporator: The evaporator is usually located inside the car. It absorbs heat from the car by diffusing the heat exchange between the refrigerant and the air inside the car, thereby reducing the temperature inside the car.

4. Expansion Valve: The expansion valve is located on the refrigerant pipeline. It controls the flow and pressure of the refrigerant to change the refrigerant from a high-pressure liquid state to a low-pressure vapor state.

5. Pipes and joints: There are a series of pipes and joints inside the refrigeration system, which are used to transfer refrigerant to various parts and ensure the sealing of the system.

6. Cooling Fan: The cooling fan is located behind the condenser. It will start when the engine temperature is too high or the air conditioning system is working to help cool the radiator and condenser.

In addition to the above main parts, the car refrigeration system also includes some auxiliary components such as sensors, control modules and wires to monitor and control the operating status of the system. These parts work together to ensure the normal operation of the car refrigeration system and provide a comfortable temperature inside the car.

Composition and working principle of automobile refrigeration system

The car refrigeration system consists of a compressor, condenser, evaporator, pressure reducing valve and refrigerant. Here is how the car refrigeration system works:

1. Compressor: The compressor is the core component of the refrigeration system. It compresses the refrigerant by driving a piston or rotating component. When the refrigerant is compressed, its temperature and pressure will increase.

2. Condenser: The condenser is usually located at the front of the car. It cools the high-temperature and high-pressure refrigerant by dissipating heat, turning it into a high-pressure liquid. In the condenser, the refrigerant exchanges heat with the outside air, and the heat is released into the air.

3. Pressure reducing valve: The pressure reducing valve is located on the refrigerant pipeline. Its function is to reduce the pressure of the refrigerant. The pressure reducing valve allows the high-pressure liquid refrigerant to expand rapidly after passing through the valve, thereby reducing the temperature and pressure.

4. Evaporator: The evaporator is usually located inside the car, such as under the dashboard or behind the seat. The refrigerant expands into a low-pressure vapor in the evaporator, absorbing heat when it comes into contact with the air inside the car, lowering the temperature inside the car. This process causes the surface of the evaporator to become cold.

5. Refrigerant: Refrigerant is the medium used to transfer heat in the car refrigeration system. Commonly used refrigerants are R134a (Freon) or R1234yf. The refrigerant is compressed from a low pressure state to a high pressure state under the action of the compressor, and then passes through the condenser and evaporator to complete the cycle.

The entire refrigeration system workflow is as follows:

1. The compressor draws in low-pressure refrigerant and compresses it to a high-pressure state.

2. The high-pressure refrigerant enters the condenser, where it comes into contact with the outside air, releases heat and cools, becoming a high-pressure liquid.

3. When high-pressure liquid passes through the pressure reducing valve, the pressure is reduced and the temperature drops.

4. The low-pressure vapor refrigerant enters the evaporator, comes into contact with the air inside the vehicle, absorbs heat and reduces the temperature inside the vehicle.

5. The refrigerant in the evaporator becomes low-pressure vapor and is sucked into the compressor again, and the cycle repeats.

Through this cycle, the refrigeration system can continuously provide a supply of cool air in the car, keeping the driver and passengers at a comfortable temperature.