As many of you will know, an air conditioner is the apparatus used for controlling the temperature and humidity of an enclosed space.
However, what you may not know is that there are three main parts of the air conditioning system: the compressor, the condenser and the evaporator.
Also there are two types of air conditioning; the manual air conditioning and the automatic air conditioning. Manual air conditioners have knobs and dials that allow the user to determine the amount of airflow that the unit will generate, with the options of high, medium or low.
The air conditioner must be turned by the user who selects the amount of air flow desired. The heating and cooling system can be controlled manually by pressing buttons or turning knobs.
Automatic air conditioning ensures climate control, optimum air quality and a pleasant temperature in the interior. With automatic air conditioning, regulation of the temperature takes note of the position of the sun and the intensity of heat it is producing thus the interior of the vehicle always remains at the desired level and the airflow is distributed suitably.
With automotive air conditioning there is clean air at all times irrespective of whether there is a high concentration of pollutants in the outside air: it switches to air recirculation filtering.
Auto air conditioning also includes a defrost function which can be activated at the push of a button to clear a fogged or an iced up window. This directs the airflow onto the inside of the glass with a high blower setting.
Auto Airconditioning is made up of the following parts:
Also known as the central operating system of the air conditioner, the compressor’s main function is to compress gas. The auto airconditioning system has two sides which are designed to discharge and suction. The compressor is like a pump whereby the suction side draws in refrigerant gas from the outlet of the evaporator.
This is where the heat dissipation occurs. It is designed to radiate heat. Condensers should have a good airflow at all times. As hot compressed gases are introduced into the top of the condenser, they are cooled off and as the gas cools, it condenses and exits at the bottom of the condenser and exits as high liquid pressure.
This is placed in the interior of the vehicle and its main function is to absorb heat. It provides several functions but the primary one is keeping the inside of the vehicle cool by removing heat.
Pressure Regulating Device
the pressure regulating device’s function is to control the temperature in the evaporator by controlling refrigerant pressure and flow.
Thermal Expansion Value
It senses both temperature and pressure and is very efficient at regulating refrigerant flow to the evaporator. The thermal expansion valves vary according to different automotive models.
Receiver – Drier
The receiver-drier is used on the high side of systems using a thermal expansion valve. The primary function of the receiver-drier is to separate gas and liquid. Its secondary function is to remove moisture and filter out dirt.
Accumulators are connected directly to the evaporator outlet and store excess liquid refrigerants. They also remove debris and moisture from a system.
Differences between auto air con and manual air con:
As the name suggests , manual air conditioner settings are adjusted manually while the auto air conditioning system does it on its own.
A manual air conditioning system requires the human touch. It has to be turned on and off to select the air flow. An automatic system will turn on and off by itself when the thermostat detects that the interior of the vehicle needs cool air.
An automatic system is more akin to central air conditioning than a manual one because it utilizes a thermostat.