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RE: Air compressor fill times

To: shop-talk@autox.team.net
Subject: RE: Air compressor fill times
From: Richard Beels <beels@technologist.com>
Date: Sun, 17 Feb 2002 15:27:37 -0500
Thanks.  I know the HP rating is as bogs as a shop-vacs - was only 
referencing it so you'd know the model/type of a/c.   Yeah, an IR would be 
nice but it's just me in the garage... :-)

At 03:31 02/17/2002,  Randall Young was inspired to say:

>Well, I used to know how to do this ... a cubic ft is 7.48 gallons, so your
>60 gal tank is about 8 cf.  Atmospheric pressure is about 15 psi, so you've
>got about 9 atm * 8 cf or roughly 72 scf.  Divide by 6.5 and your compressor
>is producing about 11 cfm.
>
>You'll have to compare that to the cfm rating, since compressor hp rating is
>pretty much a meaningless number.  Or to put it another way, 11 scfm is
>about normal for a CH 7hp, but an IR 7hp should produce over twice that much


Cheers!

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