The working principle of refrigerant in HVAC (Heating, Ventilation, and Air Conditioning) systems involves thermodynamics
and a cyclic process. Let's briefly explain:
Refrigerant in HVAC systems circulates to transfer heat. In the evaporator, the refrigerant changes from a liquid to a
gas state, absorbing heat from indoor air, thereby cooling it. Then, the gaseous refrigerant is compressed into a
high-pressure gas and transferred to the condenser.
2. Cooling and Compression:
In the condenser, the high pressure gas refrigerant releases heat, transferring it to the outdoorair, causing the
refrigerant to change back to a liquid state. During this process, the heat released by the refrigerant is dissipated into
the outdoor environment.
3. Expansion Process:
The refrigerant, having passed through the condenser, enters the expansion valve (also known as a throttle valve),
where its pressure and temperature drop sharply. This readies the refrigerant to re-enter the evaporator, initiating
a new cycle.
Through this continuous cycle of evaporation, condensation, compression, and expansion, refrigerant can continuously
absorb and release heat, expelling indoor heat and maintaining a comfortable indoor temperature. As a result, HVAC
systems provide us with a pleasant indoor environment, ensuring we stay cool during hot weather.