SPX Cooling Technologies – What exactly is Cooling Tower and How Does it operate?


A cooling podium is a specialized heat exchanger in which air and water are brought into direct hitting the ground with each other in order to reduce the water’s temperature. As this occurs, a compact volume of water is evaporated, reducing the temperature with the water being circulated over the tower.

Water, which has been warmed up by an industrial method or in an air-conditioning condenser, is pumped to the chilling tower through pipes. This particular flow through nozzles brings out water into the material named “fill, ” which decreases the flow of h2o through the cooling tower, and also exposes as much water area as possible for maximum air-water contact. As the water comes down through the cooling tower, it truly is exposed to air, which is getting pulled through the tower from the electric motor-driven fan.

If the water and air meet up, a small amount of water is evaporated, creating a cooling action. The particular cooled water is then circulated back to the condenser or perhaps process equipment where it has become reheated. It will then possibly be pumped back to the cooling down tower to be cooled just as before. Cooling Tower Fundamentals comes with a level of basic cooling podium knowledge and is a great source for those wanting to learn more.


Cooling rises are designed and manufactured in various types, with numerous shapes available. Not all towers fit all applications. Understanding the numerous kinds, along with their advantages and restriction, is important when determining the ideal tower for a project. This product list provides an overview of rises to help you determine which is suitable for your application.

Factory-assembled towers (FAP)

Factory-assembled towers undergo nearly complete assembly at all their point of manufacture, whereupon they are shipped to the internet site in a few portions as the mode of vehicles will permit. A relatively tiny tower would ship fundamentally intact. A larger, multi-cell chilling tower is assembled from modules at the factory and therefore are shipped with appropriate components for assembly by the customer.

Factory-assembled towers are also called “packaged” or “FAP” podiums. Factory-assembled cooling towers may be crossflow or counterflow, evoked draft or forced pen, depending on the application. While just about all applications are different, the Marley NC crossflow, induced pen tower is widely used regarding HVAC and light industrial software.

Field-erected cooling towers (FEP)

Field-erected towers are mostly constructed at the site for ultimate use. All huge cooling towers, and many with the smaller towers, are premade, piece-marked, and shipped to the site for final putting your unit together. The manufacturer usually provides crews and supervision for closing assembly. Field-erected towers are usually crossflow or counterflow, with regards to the application. For power in addition to heavy industrial applications, often the Marley F400 counterflow podium can be customized to meet your personal exact specifications for effectiveness, structure, drift and penne abatement.

Crossflow cooling podiums

In crossflow towers, this particular flow vertically through the load while the air flows flat, across the flow of the slipping water. Because of this, air does not pass through the distribution method, permitting the use of gravity stream hot water distribution basins fitted at the top of the unit above the load. These basins are globally applied on all crossflow podiums.

Counterflow cooling towers

Counterflow towers are designed so that atmosphere flows vertically upward, table to the flow of plummeting water in the fill. For that reason, vertical airflow is not likely to use the open, gravity-flow basins typical in crossflow designs. Instead, counterflow rises use a pressurized, pipe-type bottle of spray systems to spray waters onto the top of the load. Since air must be capable of passing through the spray method, the pipes and nozzles must be much farther separate so as not to restrict ventilation.

Induced draft vs . pressured draft

Induced draft chilling towers have fans that can be typically mounted on top of the product and pull air from the fill media. Conversely, the atmosphere is pushed by blowers positioned at the base of the atmosphere inlet face on pressured draft towers.


Optimally designed system — Using a total system strategy, every unit and element is designed and engineered to operate together as an integrated program for efficient performance as well as long life.

HVAC Free Air conditioning – A free cooling program allows the tower in order to directly satisfy a building’s cooling needs without the need associated with operating the chiller in cold weather. The goal of a free air conditioning system is to save energy. There are particular types of free cooling systems as well as certain elements that must be in position for a free cooling program to be considered.

Variable Circulation – There may be significant power savings opportunities if the air conditioning tower can be operated below variable flow in off-peak conditions. Variable flow is really a way to maximize the effectiveness of the actual installed tower capacity for whatever flow the process has.

FACTORY parts – Precision-engineered to get a reliable product, Marley OE parts are built to the top standards and tightest tolerances for extended service life.

Geareducer® Solutions – Gearboxes come in a variety of designs and decline ratios to accommodate the different supporter speeds and horsepowers involving cooling towers. The Marley Geareducer Solutions program let our customers order a new replacing gearbox for a tower via SPX, or a factory-trained technical assistant can repair an existing gearbox or rebuild a gearbox using Marley OEM areas.

Fill – One of the best components of a cooling structure is the fill. Its power to promote both the maximum speaking to the surface and the maximum speaking to time between air along with water determines the productivity of the cooling tower. Both basic fill classifications tend to be splash type fill (breaks up the water) and movie type fill (spreads water into a thin film).

Move eliminators – Designed to eliminate water droplets from the released air, drift eliminators trigger the air and droplets to create sudden changes in direction. This particular causes the drops associated with water to be separated through the air and deposited back in the tower.

Nozzles — Crossflow configuration permits the usage of a gravity-flow distribution program with a nozzle such as the Marley ST. With this system, the provision water is elevated in order for hot water distribution basins to overfill and then flow on the fill (by gravity) via nozzles located in the submission basin floor. Counterflow construction necessitates the use of a force type system of closed water lines and spray nozzles such as Marley NS.

Fans rapid Cooling tower fans have to move large volumes involving air efficiently and with a minimum amount of vibration. The materials involving manufacture must not only be works with their design but must be capable of withstanding the hazardous effects of the environment in which the supporters are required to operate. The Marley Ultra Quiet fan can be an example of a fan that can be used in cases where very low sound can be a necessity.

Driveshafts – Typically the driveshaft transmits the power in the output shaft of the motor unit to the input shaft on the Geareducer. Because the driveshaft runs within the tower, it must be remarkably corrosion resistant. Turning with full motor speed, it should be well balanced and capable of becoming re-balanced. Due to the rigorous air conditioning tower specification requirements, the actual Marley Comp-DS carbon-fiber driveshaft was designed.

Read also: Learning to make Your Own, Naturally Fragrant Air conditioning unit