Air Cooled Heat Exchanger Working Principle
An air cooled heat exchanger uses power to drive the impeller rotation, generating vortices that continuously draw in air, using ambient air as the cooling medium, sweeping across the outer surface of the finned tubes. This cools or condenses the high-temperature process fluid inside the tubes.
Classification of Air Cooled Heat Exchanger
Due to variations in structure, installation form, cooling, and ventilation modes, air cooled heat exchangers can be categorized as follows:
According to different tube bundle arrangements and installation forms, they can be divided into horizontal air cooled heat exchangers and sloped roof air cooled heat exchangers. The former is suitable for cooling, while the latter is suitable for various condensation cooling applications.
According to different ventilation modes, they can be divided into forced draft air cooled heat exchangers and induced draft air cooled heat exchangers. In the former, the fan is installed at the bottom of the tube bundle, using an axial fan to blow air onto the tube bundle; in the latter, the fan is installed at the top of the tube bundle, with air flowing from top to bottom.
According to different cooling methods, they can be divided into dry air cooled heat exchangers and wet air cooled heat exchangers. The former relies on continuous air supply from the fan for cooling; the latter enhances heat transfer with water spraying or atomization. While the latter has higher cooling efficiency than the former, it may cause corrosion to the tube bundle, affecting the lifespan of the air cooled heat exchanger.
Advantages of Air Cooled Heat Exchangers
Air cooled heat exchangers have the advantages of high efficiency and low maintenance requirements, making them suitable for cooling closed-loop processes close to ambient temperatures. Compared to expensive refrigerant coolers, they provide a more economical free cooling solution.
Air cooled heat exchangers also offer precise temperature control, high-efficiency heat transfer, and corrosion resistance, making them a long-life, highly reliable piece of equipment.、
Longhua can provide customized air cooled heat exchangers to meet specific application and working fluid characteristics.
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