Blower Blade Design

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wrm62 Participant Join Date: Jun 2009 Location: Texas Posts: 1	Blower Blade Design 06/26/2009 10:44 AM
	I am trying to do some analysis on centrifugal air blowers. The end result that I would like is a set of formulas and spreadsheets that will allow me to design a set of blades and choose a motor based on a desired output. I already have most of what I need, but what I am missing is a formula that relates blade surface area, curve radius and position angle to the volume of air that it will move. I would greatly apreciate any help that is offered. Thank you. __________________ Do you know where your towel is?
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chrisg288 Guru Join Date: Sep 2006 Location: Clive, Alberta, Canada Posts: 5916 Good Answers: 204	#1 Re: Blower Blade Design 06/27/2009 12:18 AM
	I think that most suppliers of fans will provide the essential information in their performance curves. What you are looking for is something like the K factor, but it is unit specific, and not calculatable. I believe OEM's develop these tables by testing. Chris.
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sanjaykangralkar Commentator Join Date: Jul 2008 Location: INDIA - GOLDLAND Posts: 89 Good Answers: 1	#2 Re: Blower Blade Design 06/27/2009 2:12 AM
	ya ! i am also thirsty for the same info. Some mfg. says it as an art to design centrifugal fan, is it?
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phoenix911 Guru Join Date: Aug 2007 Posts: 23647 Good Answers: 420	#5 In reply to #2 Re: Blower Blade Design 07/13/2009 1:27 PM
	its called empirical information, they take a constructed fan, test it and pull information off of it, HP draw, CFM, pressure phoenix911 __________________ “ When people get what they want, they are often surprised when they get what they deserve " - James Wood
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ronseto Guru Join Date: Sep 2008 Location: Vancleave, Ms about 30 miles inland from Biloxi and the coast Posts: 3197 Good Answers: 106	#3 Re: Blower Blade Design 06/27/2009 11:17 AM
	Check this site. Sounds like you are designing a dust collector system. http://billpentz.com/woodworking/cyclone/Index.cfm __________________ Mr.Ron from South Ms.
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Anonymous Poster	#4 Re: Blower Blade Design 07/13/2009 11:42 AM
	Do you have any need for an excellent wear material for dirty fans. We can vastly reduce wear in most applications (dust, coal dust, coal ash etc...)? We're a small company in Washington State, but have customers all over the world. If you want more information please write me at bc101jc@comcast.net . I will email you a link to our website and will not contact you unless you need further infor.
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Anonymous Poster (1); chrisg288 (1); phoenix911 (1); ronseto (1); sanjaykangralkar (1)

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