Advantages of Evaporative cooling versus Conventional Air Conditioning
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 in stead of synthetic chemical refrigerants
(CFC's, HFC's and HCFC's).
AFTER
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.
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 production throughout the year. Evaporative cooling provides businesses with a cost effective solution that helps increase production, decrease downtime and improve workers’ morale.
The Evaporative cooling capacity
The most important information to know about an Evaporative Air Conditioner is how much can it reduce the temperature. You only need to know three pieces of data to make the calculation — the ambient dry-bulb temperature, the ambient wet bulb temperature and the saturation efficiency of the machine. The two temperatures can be found by using a special combined thermometer that has one thermometer with a dry bulb and one with a wetted bulb using a water-soaked sock over the bulb. The instrument is called a Psychrometer.
The saturation efficiency of the machine should be available from the manufacturer, but 80% is a good average. The temperature reduction of the air supplied by an Evaporative Air Conditioner is the difference between dry and wet bulb temperatures multiplied by the efficiency. For example, the dry and wet bulb temperatures on a given day were 35 C dry bulb and 22 C wet bulb; machine efficiency was 80%. The temperature reduction is 35 – 22 = 13 C x 80% = 10.4 C, and therefore the air supplied to the building is 35 – 10.4 = 24.6 C.
In the above statement the figure of 80% saturation efficiency was used. The superior design of Breezair Evaporative Air Conditioners yields much higher efficiencies Many Breezair models have up to 94% saturation efficiency and therefore they lead the world in delivering bigger temperature reductions and very high “cooling effects”. In the above example, the air supplied to the room would be 22.6 C, by using 94% efficiency.
Recognition of achievement
Seeley International’s reputation as world leader in the manufacture of natural climate control systems has recently been recognised at the highest level with an ecological prestigious award. The NSW Department of Energy, Utilities and Sustainability, through the highly prestigious 2006 Green Globe Award have recognised the achievements of Seeley International in the development and manufacture of energy efficient products. Governement and Industry acknowledgements such as these helps consumers identify which products are genuinely making a difference in saving energy, lowering running costs and reducing gas emissions.
Evaporative air-cooling is not only emission free, 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 (CFC's) as used by compressor type systems. Evaporative air cooling technology is simple, functional, can be used in both industrial and commercial applications and consumes less than a quarter of the energy of refrigerative air-conditioning systems.
The Breezair system unlike conventional air conditioning is an open ventilation system. Because a constant natural flow of 100% fresh air is drawn into the building and then expelled, odours, germs and airborne contaminants are removed and not recirculated around the building.
As the temperature outside rises, the Breezair’ s cooling capacity increases, ensuring that the building remains at a comfortable and constant temperature. The system also keeps air moist, which not only helps industries such as horticulture and agriculture, which rely on moist air to keep plants flourishing, but also assists people suffering from allergy or asthmatic conditions.
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
.
Breezair saves energy
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 reambient 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.
Seely International is proud to announce that the Breezair Evaporative cooling system has been shortlisted for product of the year at The 2008 Building Services Awards.
