Factories, work places, indoor gyms and evaporative cooling cell pads

Centuries ago, the ancient Egyptians used evaporative cooling to reduce the temperature inside their buildings. Water saturated cloth sacks were placed in openings in the structure of the building. As warm air entered, it passed through the sacks and was cooled. Evaporative coolers have been used in warmer climates such as the USA, Australia and the Middle East for many years. As the effects of global warming are felt in cooler climates such as Europe and the United Kingdom the use of evaporative coolers is becoming more widespread.

On days when heat or humidity, or even excess pollen, causes discomfort, people often head off to lakes or the seaside in search of relief. Evaporative air cooling is, in many ways, simulating the cooler conditions so often found at or near large expanses of water. It makes it possible to effectively cool factories, warehouses, offices and many other areas.

When water is evaporated, energy is absorbed from the surroundings as the water changes into vapor. This reduces the temperature of the surrounding air. Evaporation will take place when the humidity is below 100% and the air begins to absorb water. Any given volume of air can hold a certain amount of water vapor and the degree of absorption will depend on the amount it is already holding. The term Relative Humidity describes how much water vapor is already in the air; relative to the amount it is capable of holding at the same conditions of dry-bulb temperature and atmospheric pressure.

When sitting in a breeze people feel cooler. Air blowing on a person increases the rate of evaporation of moisture from their skin. Heat for this process is gained from the air, but more importantly, it is also gained from the person's skin. The person feels cooler, even though the dry bulb temperature of the air remains the same.

How evaporative coolers work

In a direct evaporative cooler, such as Breezier, a pump circulates water from a reservoir (tank) to the top of absorbent cooling pads. The pads become saturated with water as the water gravitates back into the reservoir. Powerful centrifugal fans draw warm air from outside through the wetted pads. As the air passes through the pads it is cooled by evaporation and the cooled air is then circulated through the building.

Evaporative air-cooling is particular suitable for commercial and industrial applications, where compressor-type air conditioning is prohibitively expensive. Quick and easy to install, coolers are fitted to the exterior of the building, either on the roof, the sidewalls or at ground level.

The advantages of using TABREED

- Drawing fresh air from outdoors, evaporative coolers offer a great health advantage over refrigerated air conditioning, which re-circulates the same stale dry air over and over
- 0utside air often contains dust and pollen. Evaporative coolers filter the incoming air, removing most airborne dust and pollen particles. The wet cooling pads trap most of these particles, which are washed down to the unit reservoir by the circulating water
- Evaporative coolers do not dry out the air like refrigerated air conditioning and do not require an airtight building structure
- Generally installing evaporative cooling costs up to 50% less than refrigerated systems and can save up to 80% of energy costs
- Evaporative cooling does not use environmentally harmful CFC gases
- Doors and windows can be kept open

It is not just during the summer that evaporative cooling is needed. High temperatures in factories, warehouses and office complexes effect workers and therefore productivity throughout the year. Evaporative cooling provides businesses with a cost effective solution that helps increase production, decrease downtime and improve workers' morale.