Car Air Conditioner
Some automobiles are equipped with an automatic climate control SYSTEM to regulate the temperature inside the car automatically.
The climate control module is a COMPUTER which monitors and adjusts to a temperature set by the user.
The temperature is controlled by a combination of cold air from the air conditioner, and hot air from the heater to achieve a desired temperature. The blower motor speed is controlled by a solid state speed controller. This controller electrically controls the speed of the blower motor and replaces the conventional
TYPICAL AIR CONDITIONING CONFIGURATION
The air conditioning and heating unit provides thermal comfort to passengers inside no matter what the temperature is outside. The air inside can be HEATED, cooled, FILTERED or VENTILATED. The climate control feature helps to maintain the desired temperature. The system that provides cooling, heating and climate control is known as the HVAC (heating, ventilation, air conditioning) system. Basic principles of fluid mechanics, thermodynamics and heat transfer provide cold and heat for the particular system. Your climate control settings allow all three to work together to achieve good indoor air quality, thermal comfort and optimal pressure.
The air conditioning compressor is the refrigerant pump of the air conditioning system. The compressor compresses refrigerant inside the system and circulates it to the condenser and then to the evaporator. The evaporator is where the pressurized refrigerant is released, causing a drop in pressure resulting in a cold evaporator, the low pressure refrigerant is then returned to the compressor to be re-pressurized. The air conditioning compressor is driven by A SERPENTINE BELT a that is powered by the ENGINE and can be engaged and disengaged by an electromagnetic coil on the front of the compressor.
How an Air Conditioner Works
Air conditioning facilitates the removal of heat from inside the vehicle. The principle applied is that heat is removed by conduction and convection. An evaporator which is cold absorbs the heat from the air that is passed through it and then cold air is forced out through the vents inside the car by the blower motor. This is done by pressurizing refrigerant (134a) with a compressor and then releasing refrigerant (134a) inside the air conditioner evaporator.