Auto Air Conditioning Cycle

How does a car s air conditioning work.

Auto air conditioning cycle.

We ll start with the high pressure side as it leads from the engine to the passenger compartment. Lowers the temperature of the high pressure and high temperature liquid refrigerant sent by compressor through forced convection provided either by. The compressor is a pump driven by a belt attached to the engine s crankshaft. Learn more about the repetitive cycle of the system from the list of air conditioner components and the ac parts diagrams below.

Most air conditioners are air source split. The compressor was fully on and the car just was barely cooling before i began adding the freon into the car but it certainly was not keeping up and was not cool enough. An expansion valve which is a restriction the compressor pumps against. Condenser it is the device looks like a small radiator and is used after the compressor as it provides condensing i e.

The refrigerant aka coolant absorbs heat from inside of your home and then pumps it outside. The nash kelvinator corporation used its experience in refrigeration to introduce the automobile industry s first compact and affordable single unit heating and air conditioning system optional for its nash models. Although it may be alarming the first time it happens at a stoplight or when you are idling at the store it is very normal. Any ac system requires a refrigerant such as r 134a.

Since the mid 1990s most cars equipped with air conditioning have also been outfitted with electronic modules that tell your car s ac compressor to cycle on and off. Your vehicle s compressor powered by the serpentine belt compresses the refrigerant into a liquid putting it into a. When the refrigerant is drawn into the compressor it is in a low pressure gaseous form. It does this by changing the pressure and state of the refrigerant to absorb or release heat.

A mechanical compressor driven by the vehicle s engine. The metering device component 3 on this air conditioning circuit and cycle diagram is the dividing point between the high pressure and low pressure sides of the system and is designed to maintain a specific rate of flow of refrigerant into the low side of the system. In 1954 the nash ambassador was the first american automobile to have a front end fully integrated heating ventilating and air conditioning system. The compressor of the car air conditioning system is driven by the crankshaft of the engine through the belt drive.

And two heat exchangers the evaporator and the condenser. Any automotive air conditioning system employs four basic parts.