I just heard a radio ad from a department store claiming that some fans will save you hundreds of dollars in energy and hydro by circulating warm air during winter and cold air during summer. Is this possible? If so, how?
P.S. My question is about the fans, not the "savings" in energy costs since I am well aware this are relative.
2006-06-18 08:31:09 · 5 answers · asked by musical902003 4 in Science & Mathematics ➔ Weather
I forgot to mention this but I am talking about ceiling fans.
2006-06-18 09:31:20 · update #1
That could happens in some fans because they come with a special switch to change the rotation of the blades. The warm air always are near the ceiling where the fans is and the cold air is at the floor level.During the winter what the fan do is generate a circulation path from top to bottom like a clockwise movement from the floor to the roof bringing the heat to the floor; on the summer, when you switch the rotation, you invert the process. When you go to the store you can see a diagram on the side of the box that illustrate this...
2006-06-19 15:21:20 · answer #1 · answered by ? 2 · 0⤊ 1⤋
It is possible - especially if the fan's blade rotation can be reversed. In the winter, it would be important to "push" or circulate the air downward as warm air rises. In the summer, the blades should be reversed so as to pull warm air higher, away from the bodies in the room and allow the cooler air to occupy the space the people are in!
2006-06-18 18:11:16 · answer #2 · answered by Anita W 1 · 0⤊ 0⤋
Fans are just going to circulate whatever temperature the air in the room is aren't they? Maybe they have a coil that can alternately heat and cool somehow. That would be a new one on me, however.
2006-06-18 15:38:11 · answer #3 · answered by irisheyes 6 · 0⤊ 0⤋
fans just move air, they dont actually generate hot or cold air. If you place a fan in an area that generates hot or cold you can move it effectively in an area that you need it. this will save you energy costs by providing the cold or hot air where you need it instead of the whole house.
2006-06-18 15:39:21 · answer #4 · answered by Saki 2 · 0⤊ 0⤋
it depends...since heat rises ceiling fans can bring warm air down when it is going one way..and when it is going the other way it brings the cold air up in the room
2006-06-18 15:35:15 · answer #5 · answered by Anonymous · 0⤊ 0⤋