A chiller is a device used to cool liquids or gases in a laboratory or industrial setting. Chillers work by removing heat from a fluid and dissipating it to the environment through a cooling system, such as air or water. They come in various types, including air-cooled, water-cooled, and refrigerant-cooled chillers.

Chillers can be used to cool process fluids in a variety of applications, including chemical reactions, temperature-sensitive equipment, and laboratory experiments.

They are commonly used in the pharmaceutical, petrochemical, food and beverage, and electronics industries, among others. Chillers can be designed for a wide range of temperatures and cooling capacities, depending on the specific needs of the application.