X-Mozilla-Keys:                                                                                 
Russell Kent wrote:

Paul,
You may be interested to know that high efficiency particulate airfilters
(HEPA) used in the semiconductor processing industry are shaped like that
(except that the corners are radiused).  This is so that you can cram a
large surface area into a small volume.

Russell Kent

Paul wrote:

Fred, To your knowledge has anything like this ever
been tried?

Paul Lamar

Yes. I have already noticed the analogy with airfilters and
low air pressure loss W shapped radiators.

Paul Lamar
 
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