Air conditioning is becoming popular cooling and ventilating system, which purify air in the interiors.health and fitness Updated: May 30, 2003 18:48 IST
The following induce artificial ventilation:
Air is extracted or exhausted to the outside by exhaust fans usually operated electrically. As air is exhausted, a vacuum is created which induces fresh air to enter the room through windows, doors and other inlets.
Fresh air is blown into the room by centrifugal fans so as to create a positive pressure and displace the used air. Sometimes centrifugal as well as exhaust fans are used.
Air conditioners are now used to keep temperatures down. Air conditioners were invented to purify air in the interiors. Air conditioning is becoming a popular cooling and ventilating system in homes.