Chillers (water-cooled or air-cooled)

Chillers remove heat through a vapor compression or absorption refrigeration cycle process. When we sweat on a hot summer day, the sweat evaporates from our skin and heat is removed from our bodies as the sweat evaporates. The sweat in this process works in a similar way to how refrigerant is used in the cooling process of a chiller.

They are widely used systems, both for comfort and for different industrial applications. These systems are often used to air-condition or condition large facilities, office buildings, hotels or hospitals.

A cold-water system is to use water as a means of heat transfer. The water is distributed by a network of pipes to the coils of each air handler, fan coil, etc., which use the chilled water to remove heat and moisture from the space to be conditioned. The liquid treated in the outdoor unit, cooled or heated, circulates driven by a pump included in the hydronic system. The indoor unit uses the water circulating through it, sending the resulting thermal exchange (cold air or hot air) by a fan to the environment.

Chillers can be water coolers, as well as air coolers. Cold water chillers incorporate the use of cooling towers, which improve thermodynamics compared to air-cooled chillers.

• Chiller Types:

• Scroll cooled by Water/Air.
• Screw cooled by Water.
• Centrifuged cooled by Water.
• Water-cooled absorption.