Re: Vacuum cleaner blowers

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Herwig Roscher by way of Terry Fritz <twftesla-at-qwest-dot-net>" <herwig.roscher-at-gmx.de>


Jim Lux wrote:
> I can provide a sort of taxonomy here...

Jim, BunnyKiller and all, who helped,

Thank you a bunch for your assistance. Obviously there are some 
different types of air pushing equipment:

A.  Axial compressors - high pressure, high volume

B.	Centrifugal *blowers* - high pressure, low volume
	blower
	vaccum cleaner	  15 kPa		  60 CFM
	Hoover canister
	shop vac
	leaf blower		    << 7 kPa	        250 to 500 CFM

C.	Tangential *blowers* - medium pressure, medium volume
	squirrel cage           3.5 kPa		  

D.	Axial (propellor) *fans* - low pressure, high volume
	muffin fan			  1 kPa
	bathroom fan        a few Pa
	fan

Some useful relations:

1 CFM = 1.7 m^3/h
1 CF    =  28.3 l
1 PSI   =  7 kPa  
14.3 PSI = 1 at = 1 bar = 100,000 Pa

Do you agree or did I understand something wrong? Of course, 
filling in some figures would help even more  ;-)

Cheers,

Herwig
 
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