Exploring the Different Types of Drift Eliminators

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Drift eliminator systems are critical components in cooling towers, designed to capture and remove water droplets from the air stream before they can exit the cooling tower. This reduces water loss, enhances efficiency, and minimizes the risk of water contamination and environmental impact.

There are various types of drift eliminators on the market, each offering unique designs and functionalities. In this article, we will explore some of the most common drift eliminators, highlighting their advantages and limitations.

Blade Style Drift Eliminators

Blade style drift eliminators are prevalent in cooling towers, consisting of vertical blades or louvers that intercept the air stream. As air passes through, water droplets are captured by the blades and drained back into the cooling tower basin.

These drift eliminators are highly effective at capturing large droplets, achieving substantial drift removal efficiency. However, they are prone to clogging if the cooling tower water contains high levels of contaminants. Additionally, blade style drift eliminators can be more costly to install and maintain compared to other types.

Chevron Style Drift Eliminators

Chevron style drift eliminators, characterized by angled blades arranged in a chevron pattern, increase contact time between the air stream and droplets. This configuration enhances the likelihood of capturing and removing water droplets.

Effective at capturing small droplets, chevron style drift eliminators achieve high drift removal efficiency and are less prone to clogging compared to blade styles. This makes them suitable for cooling towers operating in dirty or contaminated environments.

Rotating Style Drift Eliminators

Rotating style drift eliminators employ a wheel or disc that captures water droplets as it spins. As air passes through, the rotating mechanism gathers droplets and drains them back into the cooling tower basin.

These eliminators are efficient at capturing both small and large droplets and are less likely to clog than blade style drift eliminators. They are ideal for cooling towers operating in challenging environments.

Mesh Style Drift Eliminators

Mesh style drift eliminators use a mesh screen, typically made of metal or plastic, to capture and remove water droplets from the air stream. Positioned in the air pathway, the mesh captures droplets and redirects them back into the basin.

Mesh style drift eliminators are effective at capturing small droplets, are easy to install and maintain, and provide a cost-effective option for many cooling tower applications.

Conclusion

Several types of drift eliminators are available for cooling towers, each with unique designs and features. Blade style drift eliminators excel at capturing large droplets but may clog. Chevron style drift eliminators efficiently capture small droplets and are less prone to clogging. Rotating style drift eliminators capture droplets of varying sizes and resist clogging. Mesh style drift eliminators are cost-effective and easy to maintain.

Choosing the right drift eliminator depends on factors like water quality, operating conditions, and budget. By understanding the types of drift eliminators and their respective pros and cons, operators can make informed decisions.

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