Air Conditioning

How Do Air Conditioning Units Work?

Air conditioning units, commonly known as AC units, are devices designed to regulate and control the temperature, humidity, and air quality within a confined space.

They work by using the principles of thermodynamics and fluid mechanics to transfer heat from one location to another.

The mechanics of indoor and outdoor components in an air conditioning system are essential for understanding how the entire system operates.

In summary, air conditioning units operate by utilizing the principles of refrigeration to transfer heat from the indoor environment to the outdoor environment. The key components, including the compressor, condenser coil, evaporator coil, expansion valve, and fans, work together in a carefully orchestrated process to achieve effective temperature control and maintain a comfortable indoor climate.


Outdoor Unit (Condenser Unit):

The compressor is a crucial component that initiates the refrigeration cycle. It pressurizes the refrigerant, a special fluid with a low boiling point, turning it into a high-pressure, high-temperature gas.

Condenser Coil:
The high-pressure, high-temperature refrigerant then flows through the condenser coil, located in the outdoor unit. In this coil, the refrigerant releases heat to the surrounding air and undergoes a phase change from a gas to a high-pressure liquid.

The condenser unit contains a fan that helps dissipate the heat from the condenser coil into the external environment. This facilitates the phase transition of the refrigerant and allows it to release heat efficiently.

Refrigeration Cycle:

The refrigerant completes a continuous cycle, transitioning between the outdoor and indoor units.

It alternates between a gas and a liquid state, absorbing heat from the indoor air in the evaporator coil and releasing it to the outdoor air in the condenser coil.

This cycle allows the air conditioning unit to maintain a comfortable indoor temperature by removing heat from the indoor space and transferring it outside.

Indoor Unit (Evaporator Unit):

Evaporator Coil:
The high-pressure liquid refrigerant from the outdoor unit enters the evaporator coil in the indoor unit. As the air from the space passes over the evaporator coil, the refrigerant absorbs heat from the air, causing it to evaporate and turn into a low-pressure gas.

Expansion Valve:
The low-pressure gas then flows through an expansion valve, where it undergoes a sudden drop in pressure, leading to a decrease in temperature.
Fan: A fan in the indoor unit circulates the air over the evaporator coil, now cooled by the refrigerant. This cooled air is then distributed throughout the space, reducing the overall temperature.

How We Can Help You?