The core components of a chiller unit include a compressor, condenser, evaporator, and throttling device. The compressor is responsible for compressing the refrigerant into high-temperature and high-pressure gas, while the condenser cools the high-temperature and high-pressure gas into high-pressure liquid through cooling water or air, releasing heat into the environment. Subsequently, the high-pressure liquid is depressurized through a throttling device and enters the evaporator, where it absorbs heat and evaporates, thereby reducing the temperature of the cooling water. Finally, the low-temperature and low-pressure refrigerant vapor is sucked in again by the compressor, starting a new cycle.

Water cooled chillers are usually more efficient and operate quieter than air-cooled chillers. Suitable for small and commercial cooling, portable solutions can be provided for facilities with limited space. With the development of technology, industrial water coolers adopt more environmentally friendly and energy-saving refrigeration technologies, such as carbon dioxide refrigeration and heat pipe technology.