Types and Features of Cooling Towers

1. Countercurrent tower

1、The water is in the packing in the tower, the water flows from top to bottom, and the air flows from the bottom to the top, and the two flow in opposite directions of a cooling tower.

2、The countercurrent cooling tower has good thermal performance and is divided into three cooling sections:From the water distributor to the top of the filler, the water temperature in this section is relatively high, so the heat can still be transferred to the air;Filling water and air heat exchange section; filling to the water spraying section of the sump space, and the water is cooled in this section, which is called "tail effect".In northern my country, the water temperature can drop by 1-2°C.To sum up, the counter-flow tower is about 20% smaller than the cross-flow tower under the same conditions, and the heat exchange process of the counter-flow tower is more reasonable and efficient.

3、The water distribution system is not easy to block, the water filling is kept clean and not easy to age, the moisture backflow is small, and the anti-freezing and deicing measures are easier. Multiple units can be combined in design. In winter, the required water temperature and water volume can be combined with a single unit or all fans can be turned off.

4、The construction, installation and maintenance are easy and the cost is low. It is commonly used in air conditioners and industrial large and medium-sized cooling circulating water.

2. Cross-flow tower

1、Water is in the packing in the tower, the water flows from top to bottom, and the air flows horizontally from the outside of the tower to the inside of the tower. The two flow directions are vertical and orthogonal to a cooling tower.Commonly used in residential areas with strict noise requirements, it is a cooling cycle tower that is widely used in the air-conditioning industry.Advantages: energy saving, low water pressure, small wind resistance, also equipped with low-speed motor, no dripping noise and wind noise, easy maintenance of filling and water distribution system.

2、According to the shape of the building, multiple foundations can be constructed and placed, and single or multiple cooling towers can be activated according to the required water temperature.

3、It should be noted that when the heat exchange of the frame is 40% more, there should be more filler volume, the filler is easy to age, the water distribution hole is easy to be blocked, the anti-icing is not good, and the moisture backflow is large.The advantage of a cross-flow tower is the disadvantage of a counter-flow tower.