Letter Kay, Hebei Province, fiberglass cooling tower: the contact of water and air, by evaporation to disperse a device of the waste heat produced in industrial refrigeration and air conditioning. The basic principle is: the dry (low enthalpy) of air through the fan twitching, into the wind net, into the cooling tower; saturated vapor partial pressure and high temperature water molecules to the low pressure air flow, hot and humid (high enthalpy) water spilled from the water distribution system into the tower. When the contact of water droplets and air, on the one hand, due to air and direct heat transfer, on the other hand, the pressure difference exists between the surface of water vapor and air, under pressure to produce the evaporation phenomenon, brought to the latent heat of vaporization for walking, the heat of the water away that is, evaporation heat transfer, so as to achieve the purpose of cooling the cooling tower. 
 Ventilation points natural draft cooling towers, mechanical draft cooling tower, mixed-draft cooling tower. The two, hot water and air contact points wet cooling towers, dry cooling towers, wet and dry cooling towers. Points according to the direction of flow of hot water and air cooling tower, cross flow cooling towers (AC), Francis cooling tower. Fourth, zoning general air conditioning cooling towers, industrial cooling towers, high-temperature cooling tower. 5, according to the noise level is divided into common type cooling towers, low-noise type cooling towers, ultra-low noise cooling towers, ultra-quiet cooling tower. Six jet cooling tower fan cooling tower, hyperbolic cooling towers and so on.