These are electronic powered machines which are used to create flow of air by use of blades connected to a motor inside it which propels the blades in direction clockwise or anticlockwise and some have their blades outside while others have blades in the inside of a case or housing which prevents contact with external objects.
Rotating blade fans are hung on ceiling, fixed in desks and tables, on walls ,put on electronic enclosures like car engine and computers or laptops for cooling the system which vary with the of the electronic host.
Fans use a series of process to perform their work, they do this by converting the electrical energy to mechanical energy to enable the blades to rotate as the motor inside it is spinning, its through this spinning which causes rotation which in turns creates a breeze that speeds up evaporation of sweat in the human skin cooling the body.
As the fans rotate clockwise or anticlockwise, they pump out the hot air which is lighter through the ventilations towards outside which in turn creates a free space and cold air from the outside environment will push in to replace the hot air and if this continues, the process cools the environment.
Fans are not always used for cooling but also used in keeping the house warmth incases of winter or rainy seasons and this is achieved by setting the fan to rotate in clockwise direction which will push cold air up and warm air down.
Fans are relatively cheaper to install and even buy than air conditioners which are expensive but still one has to pay more for the electricity unlike fans which one can only sit down and enjoy the cool breeze and put it off when one is leaving the house unlike air conditioner which has to be kept on.
Fans are a better option incases of improving the airflow in rooms, enhancing room d?cor, removing stale humid air from bathrooms, laundry rooms or kitchens which improve the rooms scent and also makes it better for living, fans improve air quality and reduce the likelihood of mold and mildew growth in the house.
Fans are used in classes or lecture halls to make the room have that condition easy for learning and this is because some may contain many students making it possible for the windows and doors to supply enough air circulation as the more fans will provide a comfortable environment for children to grow and learn in.
Fans can also be used in agricultural production where they can be used to help seedlings or even the grown plants have proper respiration and growth as they provide a cool comfortable environment.
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