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The Magic Cafe Forum Index » » The workshop » » Is a 50 watt floor fan strong enough to blow confetti upwards? (0 Likes) Printer Friendly Version

limhanchung
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Hello
I am going to use a 50 watt floor fan where I release pieces of silver confetti upwards. Do you think this will be strong enough to lift the confetti upwards?

Thanks.
BSutter
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One watt is one joule of energy per second. This is a measurement of power consumption, not work done. Moving material with a fan blade is a function of fan blade design as in; diameter, blade pitch, number of blades, rotational speed (rpm) and applied torque. These factors will control the volume of air the fan moves. You are neglecting to tell us how large an area you are attempting to fill with material and how much material is to be used. As with all engineering problems the operational parameters must be defined prior to creating a solution.

Bill
limhanchung
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Quote:
On 2006-03-09 11:01, BSutter wrote:
One watt is one joule of energy per second. This is a measurement of power consumption, not work done. Moving material with a fan blade is a function of fan blade design as in; diameter, blade pitch, number of blades, rotational speed (rpm) and applied torque. These factors will control the volume of air the fan moves. You are neglecting to tell us how large an area you are attempting to fill with material and how much material is to be used. As with all engineering problems the operational parameters must be defined prior to creating a solution.

Bill


How do I measure the amount of material to be used and area I am attempting to fill to give you more information on the operational parameters?
BSutter
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Depending on what you are attempting, a better soulution may be a confetti cannon.
Look here: http://www.artiesmagic.com/home.htm

Go to "Specials" and scroll about half way down the page.

Bill
macmagic
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Why don't you just plug it in and try it?
"Its a magic thing...........you wouldn't understand"
EvanMagic
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I use a remote controlled compressed air cannon. It takes far less power than a fan, and is a lot quieter.
limhanchung
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I am going for the effect of a wind slowly blowing away the confetti. Can an air cannon give me this type of effect?
Bill Palmer
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You can control the air stream by building a shroud around the fan. A shroud is a casing that shapes the air stream. If the fan blade is relatively open, the air that comes out of the fan will not be concentrated as an airstream. But if you put the fan into a tubular housing, the airstream that goes off to the side will then go forward. The shroud can be made of cardboard, aluminum, plastic or any other solid material.

What you need to know is the CF/M (cubic feet per minute) or the CM/M (cubic meters/minute) of the fan. The main thing is to try it.
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limhanchung
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Quote:
On 2006-03-15 03:58, Bill Palmer wrote:
You can control the air stream by building a shroud around the fan. A shroud is a casing that shapes the air stream. If the fan blade is relatively open, the air that comes out of the fan will not be concentrated as an airstream. But if you put the fan into a tubular housing, the airstream that goes off to the side will then go forward. The shroud can be made of cardboard, aluminum, plastic or any other solid material.

What you need to know is the CF/M (cubic feet per minute) or the CM/M (cubic meters/minute) of the fan. The main thing is to try it.



Do you mean making the shroud in a cone shape or a cylinder?

Thanks.
LostSoul
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I would think either one would work. A cylinder will keep the stream more focused than a cone (with the small end at the fan). If you make an inverted cone (so the wide part of the cone is on the fan) you could then direct the flow be bending the cone (think of a leaf blower).

Dave
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