Types Of Air Compressor Coolers

Types of Air Compressor Coolers

Fin Tube Cooler: This is the most common air-cooled type. Heat exchange tubes are connected to fins via tube expansion to increase surface area contact with air. High-temperature compressed air flows through the tubes. An axial fan mounted on the top or side of the unit forces ambient air through the fin gaps, where it exchanges heat with the hot compressed air inside the tubes, thereby dissipating heat.

Plate-Fin Cooler: Typically brazed from aluminum or aluminum alloy. High-temperature oil and compressed air flow within the cooler, with heat removed through forced convection by cooling fans. Low-power air compressors often integrate air cooling and oil cooling into a single unit, cooling both compressed air and lubricating oil.

Shell-and-tube Cooler: Consists of a bundle of parallel smooth tubes expanded into two end plates to form the core. This core is housed within a cylindrical shell with end caps. Gas flows around the heat exchange tubes, guided by baffles to create a zigzag path that forces the gas stream to pass perpendicularly across the tube bundle. Water flows inside the heat exchange tubes. This is one of the most commonly used forms in air compressor installations today.

Plate-type cooler: Offers a large heat exchange area per unit volume with a compact structure. However, it is only suitable for low-pressure applications, is difficult to clean, and requires high manufacturing precision. It is used as an oil cooler in air compressors.