What are the measures to prevent freezing in cooling towers? [Basic Knowledge]

Does water expand by about 9% when it freezes? Key points to prevent freezing damage in cooling towers.

■Why are cooling towers prone to freezing? Water freezes when it drops below 0 degrees Celsius (freezing point). Cooling towers are designed to spray water into the air and cool it through evaporation, making circulating water, spray water, and makeup water easily exposed to outside air and wind. This creates a risk of freezing, especially during winter. It is generally said that it is too late to address freezing issues once they occur. ■Why do devices break when freezing occurs? When water freezes and turns into ice, it is said to expand in volume by about 9 percent. If this expansion occurs within pipes, it can cause a rapid increase in internal pressure, leading to damage to the pipes and fittings. The reason freezing damage is considered "too late once it happens" lies in this physical phenomenon of volume expansion. ■What happens if freezing is left unattended? If the circulating water, spray water, and makeup water in the cooling tower freeze, it can render the cooling tower inoperable, prolong recovery time, and result in significant costs. What actions to take to prevent freezing becomes a crucial key point. ■What preparations can be made regularly? In addition to managing the water quality of the cooling water system, during periods when freezing is a concern, it is important to maintain operations without stopping the circulating water and to insulate the pipes. Regular preparations are key to preventing damage. Please feel free to consult with us first.

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