The chiller unit can also be classified based on factors such as the type of compressor, type of refrigerant, refrigeration capacity, and control method. For example, according to the type of compressor, chillers can be divided into piston type, screw type, centrifugal type, etc; According to the type of refrigerant, it can be divided into ammonia refrigeration units, Freon refrigeration units, etc.

According to different cooling methods, chillers can be divided into two types: water-cooled and air-cooled. Water cooled chillers use cooling towers or cooling water systems to dissipate heat, which have advantages such as high refrigeration efficiency and stable operation, but require additional cooling water systems and space. The air-cooled chiller unit, on the other hand, directly dissipates the heat from the condenser into the air through a fan, without the need for an additional cooling water system. However, it is greatly affected by environmental temperature, and the refrigeration efficiency may be slightly lower.

A chiller, also known as a chiller or refrigeration unit, is a refrigeration equipment that can provide low-temperature cooling water. It absorbs heat from the cooled object and discharges it into the environment through the circulation of refrigerant, thereby achieving the goal of reducing water temperature. Chillers are widely used in various fields such as industrial production, commercial buildings, data centers, medical facilities, food processing, refrigeration and air conditioning, and scientific research experiments.

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.