Systems and the future
Ceiling fan
housing classroom office corredor restaurant
A bladed device that turns hanging from the ceiling and moves the air in a room. It does not cool the air, it cools people by speeding up the evaporation of sweat.
What it solves
In a hot, humid climate it provides comfort with very little energy. It allows the air conditioning temperature to be raised, or the air conditioning to be skipped on many days of the year.
Today
Place the blades between 2.1 and 2.7 meters above the floor and no less than 20 centimeters from the ceiling. Prefer brushless DC motors, which use less energy and make less noise.
Common mistake
Leaving it on in an empty room, when it only cools whoever is underneath.
Tomorrow
With more days of extreme heat it will be the first layer of cooling before air conditioning. Planned from the design stage in every bedroom and classroom, it protects the sleep and attention of children and older people.
Fact With a ceiling fan the thermostat can be raised about 2 °C without losing comfort.
Where it comes from
- 1Indian subcontinent India, since the 6th century BC
The punkah, a palm-leaf fan, became in colonial times a large fan hung from the ceiling that a servant moved with a rope. - 2Han dynasty China, 2nd century
Ding Huan built a hand-powered rotary fan to cool rooms. - 3Electric era United States, 1882
The first electric ceiling fan was created, with its own motor in each unit.
Appears in the routes
See also
Also in Systems and the future
Diagrams and texts by LDB Arquitectura. They are shared under the CC BY 4.0 license, which allows them to be used and adapted with credit to the source.