1. once-through cooling tower: once-through cooling tower is a common cooling tower. Its working principle is that the hot water in the cooling equipment is circulated to the cooling tower through the water pump, and the water is sprayed on the filling layer through the spraying system, so that the water can fully contact with the air, thus achieving the purpose of heat dissipation.
2. Closed cooling tower: Closed cooling tower is a relatively environmentally friendly cooling tower. The closed circulation system can effectively reduce the waste of water resources and environmental pollution. Closed cooling towers can be divided into cooling water circulation type and air circulation type.
3. Wet cooling tower: Wet cooling tower is an efficient and energy-saving cooling tower, which uses the evaporation of water to reduce the temperature of air, thus achieving the purpose of heat dissipation. Wet cooling tower usually adopts packing structure, spraying water on the packing layer to make water fully contact with air, and water takes away heat during evaporation, thus achieving the effect of heat dissipation.
4. Dry cooling tower: Dry cooling tower is a kind of heat dissipation equipment without water. It uses a fan to blow air over the surface of the radiator, so that the air can fully contact with the heat exchanger, thus achieving the purpose of heat dissipation. Dry cooling tower usually adopts aluminum alloy or copper tube as radiator material, which has the advantages of simple structure and convenient maintenance.
In a word, the cooling towers commonly used in air conditioning mainly include once-through cooling towers, closed cooling towers, wet cooling towers and dry cooling towers. Select the appropriate cooling tower according to the actual needs.