Larger cooling towers generally utilize what type of fans?

Larger cooling towers typically utilize axial fans due to their design and efficiency in moving large volumes of air at lower pressure drops. Axial fans are characterized by their ability to effectively handle substantial air flow rates, which is particularly crucial for cooling towers that require efficient heat dissipation over larger surface areas. The design of axial fans allows them to draw air into the fan along the axis of the fan blades, facilitating significant air movement horizontally through the cooling tower structure.

In contrast, centrifugal fans, while effective for various applications, are generally not favored in large cooling towers because they operate more efficiently at higher pressures and are better suited for applications requiring focused airflow rather than expansive air movement. Propeller-type fans, often found in smaller or more specific applications, do not provide the same level of airflow efficiency for large cooling towers. Blower fans typically refer to systems that pressurize air for specific industrial uses rather than for general cooling applications.

The choice of axial fans in larger cooling towers is therefore aligned with the need for high airflow and efficient heat exchange, making them the preferred option for such environments.