[Amps] muffin fans

[Radio WC6W]

On Tue, 24 Feb 2004 04:28:28 -0800 "Partain, Chuck"
<Chuck_Partain at Maxtor.com> writes:

Hi Chuck,

> 
> anyone ever do any studies about muffin fans for cooling BIG tubes? 
> 
> they indicate ~60cfm at 30mm H2O across the tube. 

   That's a lot for a muffin fan... you might get close if you (series)
stack 6 or 7 of them!  :-)

> Looked around and see a lot of CFM measurements but not including the
pressure.

   The Rotron printed catalog has these graphs... not sure if they are
shown on line:  www.comairrotron.com

   A pair of their Spinnaker blowers (in parallel) run at the tippy-top
of their operating voltage range would just barely meet your
requirements.

   I've used their smaller biscuit blowers for cooling smaller tubes both
singly and paired with good results.

> 
> ~chuck
> 

73 & Good morning,
   Marv  WC6W  










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