Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!mips!apple!olivea!oliveb!amiga!boing!dale
From: dale@boing.UUCP (Dale Luck)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: The Fanning of the Amiga
Message-ID: <996@boing.UUCP>
Date: 16 Jun 91 16:02:31 GMT
References: <3025@public.BTR.COM> <3004@public.BTR.COM> <1339@cbmger.UUCP> <00676835659@elgamy.RAIDERNET.COM>
Reply-To: dale@boing.UUCP (Dale Luck)
Organization: Boing, Milpitas, Ca.
Lines: 24

In article <00676835659@elgamy.RAIDERNET.COM> elg@elgamy.RAIDERNET.COM (Eric Lee Green) writes:
>
>In any event, back to the issue in question, yes, fans sucking air OUT of
>an area can be quite as effective as fans blowing air INTO an area.

There is at least one difference that I know of though.

Although the volume of air will be the same in both cases, the mass of
the air is different.

I fan sucking hot air out of a hot box will cause less air to be drawn in,
than the same identical fan blowing cool air into that same hot box.
While the air is in the box, it expands due to the accumulation of energy.

Similarly, designs must also consider heated/hot air rising. It
does not make much sense to put a sucker at the bottom of a card cage
or a blower at the top of a card cage since they are working against
the normal flow of heat air.

Just another .02 worth

-- 
Dale Luck     GfxBase/Boing, Inc.
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