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To maintain a comfortable environment, commercial facilities use heating, ventilation, and air conditioning systems. Also known as HVAC, it helps in humidifying and cooling the building. A chiller is basically a necessary HVAC component that has been used in places like restaurants, hotels, hospitals, and industrial and manufacturing plants for a long time. It transfers heat from the internal environment to the external environment and thus, supports the heat-transfer devices. In industries, a chiller unit comes in handy in cooling down the internal machine components.<br>
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To maintain a comfortable environment, commercial facilities use heating, ventilation, and air conditioning systems. Also known as HVAC, it helps in humidifying and cooling the building. A chiller is basically a necessary HVAC component that has been used in places like restaurants, hotels, hospitals, and industrial and manufacturing plants for a long time. It transfers heat from the internal environment to the external environment and thus, supports the heat-transfer devices. In industries, a chiller unit comes in handy in cooling down the internal machine components.
How does a chiller unit work? A chiller unit includes four components, a condenser, an evaporator, a compressor, and an expansion unit. And, here is how it works: A chiller removes the heat from the component that needs to be cooled, much like a traditional split system. The work begins when a low-pressure refrigerant comes to the evaporator. Once that happens, the refrigerant gets heated inside the evaporator and converts into a gas. The gaseous component is then transferred into the compressor, because of which the pressure increases.
Afterwards, the high-pressure refrigerant enters the condenser. Here, the heat is eliminated using the cold water from a cooling tower or chilling air from the surroundings. As a result, the refrigerant turns into a high-pressure liquid. The condensed element is then sent to the expansion unit that has a valve. It acts as a metering device and limits the flow of the refrigerant in the system. Thus, the pressure of the refrigerant is lowered, and the cooling process begins again. This whole process is called the refrigeration cycle and more or less explains the entire functioning of a chiller unit.
Where are chillers used? A chiller unit appears as a better option over the traditional split system and comes in handy for several purposes. Basically, they are of two types, namely, water-cooled chiller and air-cooled chillers. A water-cooled chiller is consistent and efficient as water conducts heat better than air. It is commonly used in medium and large scale facilities such as hotels, shopping malls, hospitals, and airports.
On the other hand, the air-cooled chiller is more common in small and medium-sized buildings where only a little water and space is available. They have lower installation and maintenance costs but a shorter lifespan, which means they have to be replaced soon compared to their counterparts, the water-cooled chillers. They are mainly used in cooperate offices, restaurants, temporary structures, and sporting events.
