6 Different Types of Cooling Towers

Many industrial facilities implement cooling towers as part of their daily operations. These systems are designed to cool industrial facilities by extracting excess heat. Many facilities in San Diego resort to move and cool units for rent since they have a temporary need for expanding their existing capacity. However, there are several types of cooling towers available for rent and knowing how they operate helps you choose the most suitable one.

What are the different types of cooling towers?

Cooling towers are invaluable equipment for a variety of industrial processes. They are tall and open-topped structures responsible for extracting heat from the water that industrial heating and air conditioning systems produce. The different types of towers are classified according to the airflow direction and draft type:

Natural draft

These cooling towers are primarily used in industries that have an infinite flow of cooling water. This makes them ideal for big power plants and similar facilities. This tower removes the necessary amount of excess waste heat by releasing the rising hot air into the atmosphere. These types of towers usually feature a hyperbolic shape that enhances airflow.

Mechanical draft

These types of cooling towers operate by forcing the air through their structure by using a fan to circulate the air through the entire tower. The two fans commonly implemented in the construction of these cooling towers are centrifugal and propeller fans. Mechanical draft units are more efficient than natural draft units, but they use more energy and cost more to use.

CrossflowSan Diego resort to move and cool units for rent

Crossflow cooling towers feature a design that allows for horizontal airflow through the structure of the tower and the fill. From there, the air goes into an open plenum. Hot water goes downward from several distribution basins. The motor and the fans have to undergo weather-proofing so they don’t freeze as a result of excess moisture generated by the process.


In these towers, the air goes upward while the countercurrent that carries hot water goes downward to receive cooling. This maximizes the performance and minimizes the requirements for pump head. What’s more, counterflow systems are far less likely to freeze during cold weather.

Induced draft

These systems of cooling towers have a fan in the top section for eliminating hot air and pulling air throughout the tower. The high velocities of exiting air reduce the potential for re-circulation. This system uses drift eliminators to prevent water droplet entrapment. Induced draft cooling towers are among the most efficient options and they use far less energy than other designs.

Forced draft

Finally, forced draft cooling towers are very similar to the induced draft variant. However, the fan is at the bottom of the tower, not at the top, allowing the air to blow from the bottom. They have the potential for re-circulation and can face water-distribution problems.

Who in San Diego do I turn to for advanced move and cool system for rent?San Diego move and cool units for rent

It’s important to know the differences between cooling towers in order to choose the most suitable one to rent for your particular needs. However, you should also know how these cooling towers work and how you can optimize their daily operations to get the most out of them. It’s also important to learn the basics of cooling tower terminology before finding a reputable company to rent your system from.

Luckily, you won’t have to look for long because you can always rely on Aerco Systems. We are your dependable company for cooling tower rental in San Diego and all other nearby areas. To us, it makes no difference if your facility is in Roseville or another spot in the city – we’re here for you. Our technicians will thoroughly inspect your property and size your cooling tower before installing it. They will also remove it upon rental period expiry. Give us a call now!