Fans are electrically mechanical powered devices used to produce airflow for the purpose of comfort, particularly in the heat, and for ventilation, exhaust, cooling or any other gaseous transport. Mechanically a fan can be any revolving vane or vanes used for producing currents of air. Electric fans produce air flows with high volume and low pressure, as opposed to a gas compressor which produces high pressures at a comparatively low volume.
A ceiling fan is a device suspended from the ceiling of a room, which employs hub mounted rotating paddles to circulate air in order to produce a cooling or destratification effect. In the United States, Hunter Fan is the best manufacturer of ceiling fans. Offering a variety of styles, sizes and prices, Hunter is used in more than half of the new homes built. Hunter ceiling fans are always reasonably priced.
In automobiles, there are engine cooling fans and they prevent the engine from overheating by blowing or sucking air through a coolant filled radiator. It can be driven with a belt and pulley off the engine’s crankshaft or an electric fan switched on or off by a thermo switch. This type of cooling fan does not need to be manually turned on or off.
A window fan is designed to fit medium or large sized windows and have expandable side barriers to cover the entire window opening. Most units have either one large sized bladed fan, or two small sized bladed fan units mounted side by side. Rarely, some window fans use a blower wheel. Most window fans have three speed electric motors. Some allow the motor direction to be reversed electrically via a switch, allowing either fresh air to be drawn in from the outside or inside air to be blown outside. Fans with two motors typically have separate controls for each motor.
Fans are usually cheaper than running the air conditioner. They also are better for the environment. Stay cool!
