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Last edited 17 Aug 2023
In construction and engineering, the term "fan" typically refers to a device used to create airflow by the use of rotating blades or vanes. Fans are commonly used to move air or other gases, to provide ventilation, or cool systems and components. They can be found in HVAC systems, electronic devices, industrial machinery, and other engineering applications.
The earliest forms of fans were simple handheld devices made of natural materials such as leaves, feathers, or palm fronds. They were used by civilizations including the Egyptians, Greeks, and Romans, for personal cooling and ceremonial purposes.
In medieval times, fans became more elaborate and decorative. They were crafted from materials such as silk, lace and parchment and often featured intricate designs and paintings. These fans were primarily used by royalty and the upper classes as status symbols.
In the 18th century, mechanical fans started emerging, powered by hand-cranked mechanisms. The invention of steam power during the Industrial Revolution brought significant advances in fan technology. Steam-powered fans were used for industrial purposes, such as providing ventilation in mines and factories.
The advent of electricity in the late 19th century revolutionised fan design. Electric fans became popular in the early 20th century, offering more convenience and efficiency. Initially, these fans featured open-blade designs, but later they transitioned to safer enclosed designs.
Recently fans have undergone further technological advancements. They now come in various types, including ceiling fans, desk fans, tower fans, and axial fans used in HVAC systems. Modern fans feature improved blade designs, energy-efficient motors, remote controls, and smart connectivity options.
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