Central Air Cooling System – Energy Efficient Alternative to Air Conditioning
Following the western world, in India, historically, air conditioning (AC) is considered the best way to provide thermal comfort to occupants. However, the weather conditions in the Indian subcontinent and modern available central air cooling technologies as an alternative have practically been neglected in the process.
Evaporative air-cooling (the ubiquitous Air Cooler is one instance), including the widely used Central Air Cooler. It is traditionally one of the most fundamental cooling systems known to mankind to achieve thermal comfort. The same concept is used by nature to cool the human body via perspiration. Based on the principle of adiabatic cooling, evaporative cooling systems make use of water as a natural coolant where water droplets evaporate, taking heat either from the air or any surface, and in turn cools the air or the surface.
If designed and applied properly, it can replace a conventional air conditioner (AC) in places away from the sea for most times of the year. Control climate is measured by human comfort, which is provided by active control of temperature, humidity, movement of air, and its purity.
The evaporative air cooler has the ability to provide most of these at a very affordable cost and operating expenses, as it uses few components, like a fan, a pump, and water to do the job. Water trickles down the cooling pad or fills using a pump, and the fan draws the dry air across the wet surface to cool it. In fact, the continuous flow of water through the cooling pads acts as a filter, and a major part of the dirt and dust in the air gets filtered there.
