If you are evaluating an industrial evaporative cooler, you will eventually encounter the term wet-bulb temperature. It is one of the most useful concepts for understanding what evaporative cooling can realistically achieve. Dry-Bulb vs. Wet-Bulb Temperature The...
Industrial Ventilation & Cooling
Why Adding Ice Doesn’t Necessarily Make an Evaporative Cooler Colder
When people first encounter evaporative cooling, a natural assumption is that colder water should produce colder air. That leads to a common idea: "Why not add ice to the cooler?" The problem is that evaporative cooling does not primarily depend on making the water...
EC Exhaust Fans for Negative Pressure Ventilation: How Do They Work?
Introduction An EC exhaust fan can be used as part of a negative-pressure ventilation system when its airflow, pressure capability, construction and control functions are appropriate for the application. The basic principle remains the same as conventional...
Why Does an Evaporative Air Cooler Blow Air but Not Cool Enough?
An evaporative air cooler can be running normally, moving a large volume of air, and still fail to provide the cooling effect a factory expects. This does not necessarily mean the cooler is defective. Evaporative cooling depends on several factors working together,...
Fixed/Ducted vs. Portable Industrial Air Coolers
Not every building needs the same type of evaporative cooler. For industrial and commercial applications, two common approaches are fixed/ducted cooling and portable spot cooling. Fixed / ducted industrial air coolers Fixed systems are installed in a planned location...
How Cooling-Pad Size Affects Evaporative Cooling
The cooling pad is one of the most important components in an evaporative cooling system. Its job is to provide a large wet surface through which incoming air can pass. Why the pad matters Water needs to evaporate into the passing air. A properly designed pad provides...
How to Control the Speed of an EC Exhaust Fan
Introduction One of the main reasons industrial buyers consider EC exhaust fans is variable-speed operation. But the phrase “variable speed” creates an important question: How is the speed actually controlled? The answer depends on the EC motor and control interface...
How to Replace Diesel Ventilation Fans With Electric Exhaust Fans in Poultry Houses
Why Replace Diesel Ventilation Fans? Some poultry farms use diesel-powered ventilation equipment where reliable electrical ventilation capacity is unavailable or where older equipment was installed before an electric system became practical. However, diesel-powered...
Why Evaporative Coolers Work Better in Some Climates
If you've ever wondered why evaporative cooling works extremely well in some locations but less effectively in others, the answer is largely related to humidity. Evaporation needs capacity An evaporative cooler relies on water changing from liquid to vapor. That...









