An air cooler is an energy-efficient heat exchange device that uses air as the cooling medium and a fan to force convective heat transfer, dissipating the heat of process fluids (such as oil, gas, steam, circulating water, etc.) into the atmosphere. It eliminates the need for supporting cooling water systems, features simple installation and maintenance, and is both energy-efficient and environmentally friendly. With strong adaptability, it is widely used in industries such as petrochemicals, chemicals, electric power, metallurgy, refrigeration, cold storage, and industrial production lines. It can meet the process requirements of fluid cooling, condensation, and temperature reduction. Its robust construction ensures durability and adaptability to harsh outdoor working conditions.