In liquid coolers, the hot, fluid medium in the tubes is cooled down by the colder surrounding air. Due to the small amount of heat exchanged on the air side, the surface of the bare tube is increased through finning.

A unidirectional or multidirectional design is employed depending on the flow rate and the pressure drop. Heat is dissipated by low-noise axial ventilators.

Characteristics:

• a wide range of construction types is available
• thanks to its design, type LKI is also suitable for dirty media

Applications:

• cooling of water and water/glycol mixtures
• cooling of quenching media (oil, polymers); type LKI

Materials:

• interior of tubes made from copper or stainless steel
• aluminium fins
• remaining parts either made of galvanized steel or stainless steel

Note:
By clicking ‘Downloads’ you can obtain the dimension sheets of AAN standard heat exchangers. Special equipment tailor-made for specific applications can be ordered at any time.