Chilled water systems are used to cool air and water in a variety of applications. There are three main types of chilled water systems: direct expansion (DX) systems, chilled water systems, and absorption systems.
Direct expansion systems use a refrigerant to cool air directly. This type of system is typically used in residential and light commercial applications. Chilled water systems use a compressor to cool water, which is then circulated through the building. This type of system is often used in larger commercial and industrial applications. Finally, absorption systems use a combination of water and a refrigerant to cool air. This type of system is typically used in large-scale applications, such as data centers.