Energy Consultancy & Project Management

Eco-Cooling systems

Integr8 is now expanding in the middle East where we are trying to pioneer the eco-cooling technology, incluying the outdoor cooling, in areas like Egypt.

What is Evaporative Cooling?

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 any other areas. As water is evaporated, energy is lost from the air reducing temperature

The evaporative cooling process

In an evaporative cooler a pump circulates water from a reservoir tank to the top of absorbent cooling pads. The pads become saturated with water as the water descends by gravity back into the tank. A fan draws warm air from outside through the wet pads. As the air passes through the pads it is cooled by evaporation and the cooled air is then circulated around the building.

Air from an evaporative cooler is moved from the cooler, into the aircooled area and then out of the building. Constant cool air movement pushes heat out along with stale air, smoke, odours and pollution.

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. A system of ductwork and air diffusers is then used to channel the cool air to where it is needed.

The Advantages of Evaporative Coolers

  • 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.
  • Outside 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 into the sump by the circulating water.
  • Evaporative coolers do not dry out the air like refrigerated air conditioning and do not require an airtight structure.
  • Generally installing evaporative cooling costs up to 50% less than refrigerated systems and can cost up to 80% less to run.
  • Evaporative cooling does not use environmentally harmful CFC gases. 
  • Door and windows can be kept open.

An evaporative system consumes up to 80% less energy than a conventional air conditioning system, using a natural system to refresh the air

Evaporative cooling is not only very low carbon emission but it is far cheaper to run than refrigerant based air conditioning. It provides excellent cooling properties and ventilation with minimal energy consumption, using water as a working fluid and avoiding the use of ozone-destroying chlorofluorocarbons (CFCs) as used by refrigerant compressor systems.

  • Very low carbon emissions through low electricity input
  • Very low energy consumption
  • No refrigerant gas
  • No refrigerant compressor
  • Low water consumption
  • Very high saturation efficiency

Advantages of Evaporative cooling versus Conventional Air Conditioning

The only power-consuming components of a direct evaporative cooler are the fan and a small water pump. The energy savings of Evaporative Air Cooling (EAC) systems varies with ambient humidity levels and temperatures, however, typically in the UK, EAC systems will yield 50% to 80% energy savings compared to conventional air conditioning. For example in a typical hourly cycle a three and a half ton refrigeration unit consumed 8.7 KWh of electricity compared to an equivalent evaporative cooler, which consumed 1.8 KWh of electricity. In that case there is a saving of 80% of energy cost. 

Evaporative air conditioning uses between 50 and 80% less energy than conventional air conditioning; it brings in 100% fresh outside air and utilises water for cooling instead of synthetic chemical refrigerants (CFC’s, HFC’s and HCFC’s). There are no CFC pollutant emissions from evaporative air conditioning and water consumption is moderate. That all adds up to very responsible environmental and energy saving characteristics.

Conventional air-conditioning impacts significantly on a building’s operating costs as it uses in excess of 25% of the building’s energy consumption. It therefore makes sense to employ Evaporative Air Cooling, a far more energy efficient system, to create a pleasant environment for workers to maximise productivity whilst at the same time minimising energy costs.

Evaporative cooling enhances the well being of individuals in areas when ambient temperatures are high, providing comfort cooling in buildings such as schools, libraries and offices. It is also the best, and often the only solution for commercial and industrial applications such as greenhouses, laundries, warehouses, factories and commercial kitchens