A vehicle’s air conditioning system does not create cold air, as some folks think. It actually takes the heat and moisture out of the air that is already in your car, leaving behind cooler air. Having a good understanding of how the components work can help to explain the process of air conditioning.
Get familiarized with the components of a Car Air Conditioning System.
Many consider the compressor as the heart of the air conditioning system of the car. As the name suggests, it "compresses" the refrigerant so that it turns from a gaseous state into a liquid state. The compressor connects to the crankshaft via a drive belt. As such, it draws its power from the engine.
Whenever you turn on the car AC system, the compressor pumps gaseous or vaporized refrigerate to the condenser.
Condensation results from the rapid cooling of hot or warm air. The water vapour or moisture in hot air condenses to form a liquid state. This is what the condenser does. It is one of the most recognizable parts of the modern automotive AC system because it is very easy to check. This looks a lot like the radiator. It is also positioned right in from of the radiator. As such, if you're wondering why you have "two" radiators, the one in front is the condenser.
This devices turns or "condenses" the high-pressure, high-temperature, vaporized refrigerant coming from the compressor. The air that flows through the condenser removes the heat in the high-pressure refrigerant, cooling it down.
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Among all the components of the modern vehicle AC system, the evaporator is the only one that is located inside the passenger compartment. The rest of the components are in the engine bay. The evaporator looks like a very small radiator with fins and tubes. Cold air from the cabin circulates through the ducts, it is blown past the evaporator core and the heat is released. What comes out of the AC vents is cold and dry air.
This component prepares the refrigerant for entry into the evaporator. It serves as a reservoir for the refrigerant while also removing any moisture that may be present in the refrigerant. It is important that built-in desiccants remove moisture from the refrigerant. If not, ice crystals can form and lead to blockage and mechanical damage.
5. Expansion Valve.
The thermal expansion valve is the boundary between the high-pressure side of the system (including the compressor, condenser and receiver) and the low-pressure side of the system. As the name implies, the expansion valve allows the expansion of the high-pressure liquid refrigerant coming from the receiver-drier. Because of the expansion, there is a reduction in pressure.
While not a "component" of an automotive air conditioning system, the refrigerant is the lifeline of the system. Without it, heat will not be able to move out from the system and bring cooling comfort to everyone in the passenger compartment. At low pressures and temperatures, the refrigerant takes on a gaseous form. At high temperatures and pressures, the refrigerant is liquid.
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The Process of Cooling the Air in an AC System
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Bring your car to National Tire Wholesale. Our technicians only recommend maintenance and repairs to keep you and your car safe.
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