Why use Evaporative Cooling & the simple principal of how it works?

by | Mar 18, 2017 | PremiAir

Why Evaporative Cooling? We’d like to suggest a few reasons:

Evaporative cooling uses about 80 to 85% less energy than traditional air conditioning does. Given that overall, cooling accounts for around 70% of the power used by industry, those savings can be very significant.

Evaporative cooling uses far less water than you might imagine – each year, per cooler, around the same amount as leaving a tap dripping for 3 months. Compared with the electricity saved, the cost is tiny, and more water is saved at the power station than is used in the cooler.

In the right application, evaporative cooling is far less costly to install. So much so in fact, that it can become viable to cool areas that otherwise couldn’t be.

Rather than recirculating stale room air, evaporative coolers supply 100% fresh air to the space, which results in an invigorating, healthy working environment for the occupants.

In extreme conditions, when the outdoor temperature exceeds the design conditions, evaporative coolers continue to operate, and in fact give more and more cooling. In contrast, traditional air conditioning will lose cooling capacity, and eventually will shut down completely to protect itself.

Maintenance, while important, is less specialised, and does not require F Gas certification, so can be significantly cheaper.

Evaporative coolers contain no refrigerants or other chemicals that can damage the environment or need specialist handling.

How it Works

An evaporative cooler uses evaporation to cool the air. In an evaporative cooler, a pump circulates water from the reservoir on to a cooling pad, which in turn becomes very wet. A fan draws air from outside the unit through the moistened pad. As it passes through the pad the air is cooled by evaporation. The key to effective evaporative cooling is ensuring that each of the cooling pads are completely saturated at all times during operation and that the system’s fan & motor are sized and designed to deliver the appropriate airflow to the space to be cooled.