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What Kind of Water is Good for Cooling Towers?

What Kind of Water is Good for Cooling Towers?

The cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to reduce the temperature of the water; its cooling is to use water and air to exchange heat and cold to generate steam, and the volatilization of the steam takes away the heat to achieve evaporation. The principle of heat dissipation, convection heat transfer and radiation heat transfer, etc., to dissipate the waste heat generated in the industry or refrigeration and air conditioning to reduce the water temperature evaporative heat dissipation device to ensure the normal operation of the system, the device is generally barrel-shaped, so it is called a cooling tower.


1. The lower the turbidity of the water is, the better


Distilled water is usually used in the cooling cycle of water-cooling equipment, because the purity of distilled water is relatively high, and the impurities are relatively small. The suspended matter in the water enters the cooling system and will be deposited in the heat exchange equipment and pipes due to the reduced flow rate. Heat exchange, long-term accumulation of impurities can also cause blockage of cooling water pipes. In addition, the high turbidity of the 50 ton cooling water will also accelerate the corrosion of the equipment. Therefore, in order to improve the service life of the equipment, it is stipulated in the cooling tower industry that the turbidity of the cooling water shall not be greater than 2mg/l.


2. Water quality that is not easy to scale


In the process of circulating cooling water, it is required that scale is not easily generated on the heat transfer surface of the heat exchange equipment. When the scale reaches a certain thickness, it will affect the heat exchange effect, which will affect the industrial production efficiency and safety production. To a certain extent, the water pipes produce scale, usually because the water quality of the cooling tower is not clean enough, the hardness of the water is relatively high, and the water contains more calcium and magnesium ions. When the water evaporates, these ions remain on the surface of the pipe wall to form scale.


3. Water is not easy to corrode metal equipment


During the use of cooling tower water pump, it is required that the equipment should not be corroded. If corrosion is unavoidable, the smaller the degree of corrosion, the better, so as to prevent the heat transfer equipment from rapidly reducing the effective heat transfer area and reducing heat transfer due to rapid corrosion. The cooling tower has good water quality and can effectively control the growth of microorganisms. The growth and reproduction of microorganisms are relatively fast. Too much slime will cause pipeline blockage and corrosion, which will seriously reduce the cooling efficiency.

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