Selecting the right equipment depends on the application.
Greffisol provides a full spectrum of global product solutions for the Commercial HVAC, Industrial Refrigeration, Power Generation and Industrial Process markets.
What’s your top priority?
Is it conserving water, maximizing energy efficiency, or achieving the best of both worlds?
At Greffisol, we offer a complete range of solutions—from evaporative to dry cooling, including hybrid and adiabatic systems—designed to adapt seamlessly to your application through the right equipment selection.
Our global product portfolio serves diverse markets, including Commercial HVAC, Industrial Refrigeration, Power Generation, and Industrial Processes, delivering performance, efficiency, and sustainability.
FULL SPECTRUM OF CHOICES
Selecting the right cooling solution for your next project
When determining the type of heat-rejection equipment that should be used on a given project, the specific needs of the facility should dictate whether a Cooling Tower or Dry Cooling solution is suitable. Given the growing sensitivity to water conservation, and the ever-increasing cost to maintain mechanical systems, closed loop technology is seeing wider implementation.
Cooling Tower
These systems are known for their expansive range in available capacities and configurations, lower initial cost, and energy efficiency. Open cooling towers are well known for their small footprint and minimal noise. These units are also capable of handling colder water temperatures in a wide range of climates, whereas the cooling capacity of some other technologies is significantly reduced in extreme climates. There are, however, some trade-offs when compared to closed-circuit alternatives. Among the largest compromises are water consumption, discharge plume and the level of maintenance.
Hybrid Fluid Coolers
Hybrid coolers combine dry and evaporative cooling to maximize energy efficiency while simultaneously reducing water consumption. Hybrid cooling towers are suitable where saving water is the top priority yet still maintaining a high capacity and low physical footprint. In these systems, the dry coil is placed in series with the evaporative cooling coil. Hybrid coolers are frequently used in critical chilled-water applications where minimizing both water and energy are the focus.
Adiabatic Dry Coolers
Adiabatic coolers function in a similar fashion to dry cooling systems but with the addition of pre-cooling pads. Water runs over porous media while air is drawn through the pads, lowering the dry bulb temperature of the incoming air. Adiabatic coolers are commonly used in regions with fluctuating ambient temperatures, meaning that the adiabatic pad system only runs when ambient temperatures reach peak conditions. During these conditions, these coolers use up to 80% less water than traditional evaporative units. These units have a higher initial price but will have significantly lower water treatment and maintenance costs. These units will take up more physical space and electricity cost will be higher, which may not be the best choice for some installations.
Dry Coolers
Dry coolers are best specified where water conservation and reduced maintenance are the key considerations. Because dry coolers do not utilize any water or evaporative cooling, dry coolers eliminate water treatment, plume and Legionella concerns. Dry coolers will use more energy and require a larger footprint than evaporative or hybrid fluid coolers of the same capacity. Dry coolers are limited by the dry bulb temperature compared to towers and adiabatic units, but if lower capacity and running cost are in focus, this would be an ideal solution.
NOTE: This is a preliminary selection guide. Always contact your local GREFFISOL sales representative for support on your next cooling project.
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