The refrigerant is then compressed, which condenses into a fluid, and is then released under pressure. The heat from the air passes along to the refrigerant, which is then fed into the compressor. When the room temperature air passes through the evaporator unit, heat is eliminated from the air. It should be noted that heat moves toward cooler areas. The compressor is housed within the condenser unit and the component that starts the chain reaction cools the refrigerant. Refrigerant is in the vapor form, under high temperature and low pressure, returned to the compressor. The air loses energy, therefore the temperature drops, creating cold air. The energy does not go away but converts from one form to another. When this process takes place the refrigerant needs a lot of energy, so it takes energy from the air around the evaporator. Meanwhile the moisture in the air will also condense and expose.Īt refrigeration platforms, when the liquid medium is at a high temperature, the pressure becomes a vapor liquid with a low temperature and pressure. Therefore the temperature of the air will be reduced very quickly. Here, the air from the evaporator takes away a lot of energy through the radiator leaves. The air taken from outside comes through the evaporator. It means cooling the air mass in the cabin. (Photo: Drive2)ĭuring evaporation, the refrigerant absorbs heat in the car cabin. Due to the drop of pressure, the liquid becomes a vapor in the evaporator. It lowers the pressure of the refrigerant. The expansion valve regulates the flow of liquid into the evaporator (evaporator). The liquid refrigerant continues to circulate to the filter or desiccator, where the refrigerant is purified by absorbing all moisture and impurities. During this stage the refrigerant is pumped to the condenser or the hot rig in steam.Īt the condenser the temperature of the medium is very high, the fan blows the condenser, the vapor liquid is cooled, condensed into a liquid under high pressure and low temperature. The refrigerant is pumped from the compressor under high pressure and under high evaporation temperature. Air Conditioning System Operating Principleīasically, the AC system works by 2 principles: evaporating liquids absorb heat, while condensation from vapor to liquid transmits heat to objects and their surroundings. To know how an AC compressor works, we must understand how the AC system operates. To know how to tell if AC compressor is bad we have to understand how the AC compressor works. Inside the compressor is a complex series of passageways, valves, bearings, and other components. Refrigerant is ‘sucked’ into the compressor, compressed, and ‘discharged’ through the outlet, headed for the condenser. The suction port is always the larger diameter hole. The AC compressor consists of 2 ports, an inlet and outlet, or ‘suction’ and ‘discharge’ respectively. Liquids are relatively incompressible while some can be compressed, the main action of a pump is to pressurize and transport liquids. As gasses are compressible, the compressor also reduces the volume of a gas. The AC compressor is called a pump because both increase the pressure on a fluid and both can transport the fluid through a pipe. In simple terms, an AC compressor is a pump which creates the heat by putting the air conditioning refrigerant under extremely high pressure. In the words of many repairmen, an AC compressor is the heart of an AC system. Source: Cargurus What Is An AC Compressor?Īn AC compressor is an important part in the car’s air conditioning system. Every air conditioning system of a vehicle depends on a steady flow of refrigerant to circulate through it. This refrigerant is what allows the air conditioner to produce the cool air which comes out of the vents in the dashboard. Unfortunately, your AC may fail to make cool air and a high possibility is the AC compressor. It’s getting hot now, during the summer season but your car AC does not work properly even when you see the airflow from the AC. Let’s find out the symptoms of bad AC compressor and how it affects the AC system.
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