Counter Flow Square Cooling Tower

What is counter flow square cooling tower?

Counterflow cooling towers turn the air from horizontal to vertical flow beneath the fill media. While this gives good access to the cold water basin, the rest of the tower is more compact with lower overall height. This creates limited access to the spray system, eliminators, motor, drive system, and fan.

Crossflow and counterflow square cooling towers both have distinct advantages, the design requirements and conditions specific to your application determine the appropriate cooling tower for your project. The fundamental difference between crossflow and counterflow cooling towers is how the air moving through the tower interacts with the process water being cooled. In a crossflow tower, air travels horizontally across the direction of the falling water. In a counterflow tower, air travels vertically upwards in the opposite direction (counter) to the direction of the falling water.

While structural and mechanical components of crossflow and counterflow cooling towers are similar, application-specific design requirements should determine the tower type.

The fundamental difference between crossflow and counterflow cooling towers is how the air moving through the cooling tower interacts with the process water being cooled. Air travels horizontally across the direction of the falling water in a crossflow tower. In a counterflow tower air travels vertically upwards in the opposite direction (counter) to the falling water.

Depending on the application, a crossflow cooling tower may require less total area than a counterflow tower because of the location and number of air inlets; a crossflow tower has two air inlets compared to a counterflow tower’s four air inlets.

Summary

Choosing between a crossflow and counterflow cooling tower for your application depends on the factors most important to your project specifications. Both types are effective means to support chillers and achieve efficient evaporative cooling with a few distinct design differences.

Crossflow and Counterflow Cooling Tower Distinctions

Crossflow Advantages:

Capable of up to 70% turndown

Performs well in cold-weather applications

Water distribution system can be cleaned while tower is in operation

More access for routine maintenance

Uses high efficiency heat transfer fill

Counterflow Advantages:

Smaller footprint up to ~750 tonnage (with film fill)

Potentially lower operating weight

May be easier to install

Accommodates wide range of fill types to address source water quality

Here we see the 1200T counter flow square cooling tower specs belows:

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