Introduction to cooling tower cooling effect

Cooling tower is an evaporative cooling device that uses water as a circulating coolant to dissipate waste heat generated by industrial or refrigeration air conditioners, and reduce the water temperature, so as to ensure the normal operation of the equipment, the cooling efficiency is the key! However, how much do you know about the reasons of the poor cooling effect? During the operation, how do we deal with it?

Cooling tower, as an indispensable device which cooling the circulating water, has brought great energy saving effect to users from both industrial and civil fields. At the same time, it protected the water resources. But while achieving the effect of energy saving and emission reduction, the cooling tower also has many problems. For example, we use cooling tower to achieve cooling effect, but the cooling effect may be influenced by such factors as cooling fin, fan air volume, water flow used in cooling tower, and installation position. Among them, cooling fin and fan air volume have the greatest influence on it.

Mainly manifested in:

1. Cooling Fin, is the key components in the cooling tower. Small towers generally use PVC sheets. Large towers will use wood, the main purpose is to make sure the contact surface of air and water, will be bigger enough, when the wind resistance is not affected at the same time. Also achieve maximum heat transfer rate, cooling fin affect heat transfer effect by two parameters, mainly is the fin shape and height. During the installation, try not to damage the cooling fins, which will block the water flow;

2. Fan volume: it mainly accelerates the air flow in the tower, accelerates the heat exchange between air and water, and takes away heat. The main factors affecting the air volume are fan blade shape,  width and length, blade deflection Angle, blade speed, installation Angle, rotate speed, motor and transmission ratio, etc. In addition, in the case of a certain amount of air, the same type of tower, the cooling water efficiency will be better if then cooling water flow is small. These two problems are not a big problem as long as we pay attention to the procurement, installation and maintenance.

Cooling tower cooling effect factors and solutions

In addition, the reasons for the unsatisfactory cooling effect of the cooling tower are as follows:

1. In the long-term use of cooling tower, due to the turbid and high hardness of circulating water, the infill is soaked in the water with high temperature for a long time, which leads to the phenomenon of scaling and blocking of the packing. After long-term accumulation, the texture of the infill is blocked, so the cooling effect is not up to the standard;

2. Improper selection of cooling tower. Because didn’t select the right cooling tower according to customers’ own flow rate and water inlet temperature, the standard cooling tower is used as industrial cooling tower, just like small horse with large wagen, so the cooling effect is definitely not good.

3. The sealing around cooling tower is too good, the ventilation is too bad, which makes the air cannot circulate, so make the FRP cooling tower’s cooling effect is not good.

Detailed solutions:

1. For the first point, the cooling tower infill can be replaced.

2. The inlet water flow of cooling tower can be reduced, and the flow rate can be halved based on the original flow rate, so that the cooling effect will be much better.

3. The cooling tower can be placed in a shady area, which greatly improves the cooling effect of the cooling tower.