A ceiling fan is a machine suspended from the ceiling of a room, which employs hub-mounted rotating paddles to circulate air in order to generate a cooling effect. In summer, when the fan's direction of rotation is set so that air is blown downward, the breeze created by a ceiling fan speeds the vanishing of sweat on human skin, which is qualified as a cooling effect.
In winter, buildings in colder climates are typically heated. Air naturally stratifies that is, warmer air rises to the upper limit while cooler air sinks to the floor. A ceiling fan, with its direction of revolution set so that air is drawn upward, takes cool air from lower levels in the room and pushes it upward towards the upper limit. The warm air, which logically rises to the ceiling, is forced out of the way of the conventional cool air; it travels along the ceiling and down the walls, to lower levels where people in the room can believe it. This heat-reclaiming action allows for cost reduction, by making it so that less fuel needs to be exhausted in order to heat the room to a relaxed temperature and remain it there.
In winter, buildings in colder climates are typically heated. Air naturally stratifies that is, warmer air rises to the upper limit while cooler air sinks to the floor. A ceiling fan, with its direction of revolution set so that air is drawn upward, takes cool air from lower levels in the room and pushes it upward towards the upper limit. The warm air, which logically rises to the ceiling, is forced out of the way of the conventional cool air; it travels along the ceiling and down the walls, to lower levels where people in the room can believe it. This heat-reclaiming action allows for cost reduction, by making it so that less fuel needs to be exhausted in order to heat the room to a relaxed temperature and remain it there.
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