Ozone treatment of circulating water in direct evaporative cooling air conditioning systems

Adopting a gasliquid mixing pump for putting ozone into water and limiting the ozone concentration at outlet of draught fan lower than 0.2 mg/m3, carries out the dynamic simulation experiment on a sample equipment of direct evaporative cooling air conditioner. The operation results of 32 days show that the amount of ozone is from 0.03 g/（m3·h） to 0.09 g/（m³·h）, and that the concentration weight is improved from 1.5 to 4.5, and that the bactericidal, anticorrosion and antiscale effects are obvious. Proposes some measures for practical application.