India is a tropical country, with temperatures reaching as high as 54 degrees Celsius in some parts and having an average temperature of 28 degrees. Such high temperatures mean that it is uncomfortable for people to stay in homes with air conditioning or electronic fans. India is a country that has regular shortages and problems in power supply, so air conditioning is not a go-to option. Urban areas have the luxury of having uninterrupted power, but in small towns and rural places, the savior is fans.
An electric fan by definition is an electrically powered machine used to create flow within a fluid, typically a gas such as air. It consists of rotors or blades which act on the air-fluid; the assembly hub of the rotors is called an impeller. Mechanically it is a revolving vane that produces a current of air. Unlike compressors, fans produce air flows with high volume and low pressure.
There are mainly two types of fans that are used for general household or commercial purposes.
- Ceiling Fan: The most common type of fan used, it is usually suspended from the ceiling and rotates slower as compared to other types of fans. They cool the room by introducing movement to an otherwise still hot air of a room. Fans technically do not cool air like other conditioning equipment but consume significantly less power. These fans originated in India; way back in 500 B.C. They were called Pankh-fans and were operated by a cord. The earliest ceiling fans appeared in the 1860s in the United States and did not use any sort of electrical motor, but were instead powered by running water. The current iteration of the electric fan was invented in 1882 by Phillip Diehl. He invented it when a motor he originally purposed for the sewing machine was instead used to power a ceiling fan, which did not have a belt drive. The initial design involved only two blades, but by World War, it changed to four blades as it circulated more air and was significantly quieter. It phased out in the United States by the 1950s when the air conditioning was introduced. However, in countries like India and the Middle East where air conditioning was impractical at the time, it rapidly caught on. It is easy to purchase and one can easily find electric fans online in India at the click of a button.
• Table Fan: these are a more compact and economical version of the ceiling fan. They rotate at much higher speeds than that of ceiling fans as they have to circulate the air horizontally. These are extremely compact and can be placed in small spaces such as tables and are used in office cabins and personal spaces for cooling. They are also very cheap as their small sizes mean that manufacturing costs are minimal. There are many varieties to choose from and easy comparisons can be made in many websites and entire lists of online top fans in India can be found on Google.