Fan Loads

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ragav Participant Join Date: May 2009 Posts: 2	Fan Loads 05/19/2009 6:20 AM
	hey.. what is the load of a fan? Can a fan run in vaccuum? i'm a beginner in electricals.. explain me pls?
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sb Guru Join Date: Mar 2007 Posts: 2550 Good Answers: 103	#1 Re: load of a fan 05/19/2009 6:24 AM
	1. The load on a fan is the pneumatic one + the losses. 2. The fan can run in vacuum assuming you mean an electric fan - but a) No air to displace hence it is not a fan b) The losses can not be dissipated (no cooling air) hence the fan will quickly fail due to over heat. 3. These are not electrical question and are more of a mechanical (Fluid mechanics) and Heat+thermodynamics 4. Of course it is a bit rude, but the first word could have been rephrased. __________________ Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#2 Re: load of a fan 05/19/2009 6:26 AM
	The power needed for any fluid mover is the increase in pressure times the volumetric flowrate, all expressed in compatible units. A hypothetical fan running in a vacuum, therefore, will have no pressure change and no volumetric flowrate, as there is no fluid to move. So the power needed, apart from that required to overcome seal and bearing resistance, will be zero. The concept of wanting to run a fan in a vacuum, however, is awe-inspiring.... __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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user-deleted-1105 Guru Join Date: May 2007 Location: Harlow England Posts: 16512 Good Answers: 670	#3 In reply to #2 Re: load of a fan 05/19/2009 7:37 AM
	The concept of wanting to run a fan in a vacuum, however, is awe-inspiring.... I'm a big fan of the concept It will help to keep the vacuum cool Del __________________ health warning: These posts may contain traces of nut.
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PWSlack (1); sb (1); user-deleted-1105 (1)

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