The Science Behind Cooling - 3 Components To Understand

SYDNEY - March 23, 2025 - PRLog -- At its heart commercial air conditioning is based on the principles of fluid mechanics and thermodynamics. The most important components that facilitate cooling are the condenser, evaporator and compressor. If air is treated it goes through a sequence of phases which absorb and release heat and create a cooling effect.

The Role Of The Refrigerant

One of the main protagonists in the air conditioning drama is the refrigerant. The chemicals used in refrigerants were selected because of their ability to change states at low temperatures. As refrigerant circulates throughout the system, it goes through changes in temperature and pressure and temperature, allowing it to take heat from indoor air before releasing it out.

The Evaporator:

Within the air handling system of commercial air conditioners is the evaporator. It is an array of pipes that are coiled, through which the refrigerant flows. When warm indoor air is blown through these coils, the refrigerant absorbs heat from the air and causes it to evaporate from a liquid into gas. This transition in phase creates the cooling effect that calms us during a hot day.

The Compressor:

The refrigerant or usually known as the coolant is present in a gaseous form. It must be compressed in order to raise its temperature and increase the pressure. That's where the compressor is useful. It increases the efficiency of the cooling system. The pressurised and hot gas is then transferred to the unit for condensing situated outside of the building.

The Condenser:

Exchange of heat takes place with the help of a condenser. It allows the refrigerant system to release the heat absorbed by the indoor air. When the hot gas is introduced to the condenser, it cools and then condenses into liquid form. The heat energy is expelled to the outdoors and the refrigerant is cooled. It is ready to start the cycle.

Coral Air is a commercial air conditioning specialist based in Sydney and Wollongong.
https://www.coralair.com.au/