How Industrial Cooling Towers Work
2022-06-23
The working process of the cooling tower: the working process of the circular counter-flow cooling tower is an example: the hot water from the main engine room passes through the water pump through the pipeline, the horizontal throat, the curved throat and the central throat with a certain pressure to press the circulating water to the water spreading system of the cooling tower. Inside, the water is evenly spread on the filler through the small holes on the water-spreading pipe; the dry low-H value air enters the tower from the bottom air net under the action of the fan, and the hot water flows through the surface of the filler to form a water film It exchanges heat with the air, and the hot air with high humidity and high han value is extracted from the top, and the cooling water drops into the bottom basin and flows into the host through the water outlet pipe.
Under normal circumstances, the air entering the tower is dry air with low wet bulb temperature. There is obviously a difference in concentration of water molecules and a difference in kinetic energy pressure between water and air. When the fan is running, under the action of static pressure in the tower, The water molecules continuously evaporate into the air and become water vapor molecules, and the average kinetic energy of the remaining water molecules will decrease, thereby reducing the temperature of the circulating water. It can be seen from the above analysis that evaporative cooling has nothing to do with the temperature of the air (usually the dry bulb temperature) being lower or higher than the water temperature. As long as the water molecules can continuously evaporate into the air, the water temperature will decrease. However, the evaporation of water into the air does not go on endlessly. When the air in contact with the water is not saturated, the water molecules continuously evaporate into the air, but when the air on the water-air contact surface is saturated, the water molecules cannot evaporate, but are in a state of dynamic equilibrium. The number of water molecules evaporated is equal to the number of water molecules returned to the water from the air, and the water temperature remains the same. It can be seen from this that the drier the air in contact with the water, the easier the evaporation will proceed, and the easier the water temperature will be lowered.
The Company is specialized in R&D, production and sales of a variety of water cooling products, such as closed cooling tower, crossflow tower, countercurrent tower, refrigerator, evaporative condenser, etc. In addition, the Company provides consulting of other relevant spare and accessory parts as well as technologies.
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ADD： No. 69-2, Beihui Road, Huishan District, Wuxi City
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