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There's a great page on the Exploratorium website of different variations of blowers <http://www.exploratorium.edu/books/bernoulli/><http://www.exploratorium.edu/books/bernoulli/>. It shows the first version of our blower being used by my daughter many years ago.
We use a 150W 4-pole squirrel cage blower, the CFM is throttled right back by the inlet filter and then the speed is increased with minimal noise using a ring to collimate the flow. We have a pair of guards on the inlet to stop foreign objects like pencils or worse coins.
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________________________________
From: Erich Rose <[log in to unmask]>
Reply-To: Informal Science Education Network <[log in to unmask]>
Date: Thu, 28 May 2009 17:03:45 +0100
To: <[log in to unmask]>
Conversation: Blower Fans
Subject: Re: Blower Fans
ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************
Thanks so far for the feedback from everyone. I have actually had a great deal of experience with air exhibits and their requirements. I have generally found squirrel cage blowers the best. I know about static pressure and making sure there are as few bends or obstructions in the flow as possible. I also know about making air inlets match the fans to maximize performance. I've dealt with issues of safety (how about a blower shredding a pencil and spitting splinters all over the gallery!?) and noise (muffling inlets). Between myself and some of the great exhibit techs who worked with me I do have some great details in my bag.
BUT what I was really hoping for is some actual numbers, data, specs, etc. Something I can compare to what I already know. I will happily share any conclusions with the list.
>
> --
> Erich Rose
> Exhibit, Environmental and Industrial Design
> 807 The Living End
> Austin, TX 78746
> 512-626-9930; [log in to unmask]
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Erich Rose
Exhibit, Environmental and Industrial Design
807 The Living End
Austin, TX 78746
512-626-9930; [log in to unmask]
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit
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