Date: Tue Sep 25 16:17:25 2007

Author: David Tam

Subject: Re: fire extinguisher cart

Post:
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Wayne,

Wait, aren't those connected in series, i.e. cylinder, tube, diffusing
horn? Or did I not understand your terminology?

Also, couldn't I also use a pressurized cylinder of CO2, such as those for
welding?

Thanks,

David


On 9/25/07, Wayne Easterling wrote:
>
> Hi David,
>
> What you see is not steam, but water vapor condensing out of
> the air because of the low temperature of the CO2 being expelled. To do
> this demo you need to modify a CO2 type fire extinguisher by first removing
> the discharge tube/horn and then cutting off the diffuser.
>
>
>
> Wayne
> ------------------------------
>
> *From:* tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] *On
> Behalf Of *David Tam
> *Sent:* Tuesday, September 25, 2007 12:37 PM
> *To:* tap-l@lists.ncsu.edu
> *Subject:* [tap-l] fire extinguisher cart
>
>
>
> Hi everyone,
>
> I'm stumped as regards the demo where a person sits on a cart and a fire
> extinguisher propels him/her. What did you do to the fire extinguisher to
> make it propel a jet of steam? Mine either puff a cloud of powder or shoot
> a focused stream of water.
>
> Thanks,
>
> David Tam
>

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Wayne,Wait, aren't those connected in series, i.e. cylinder, tube, diffusing horn? Or did I not understand your terminology?Also, couldn't I also use a pressurized cylinder of CO2, such as those for welding?
Thanks,DavidOn 9/25/07, Wayne Easterling wrote:

















Hi David,

What
you see is not steam, but water vapor condensing out of the air because of the
low temperature of the CO2 being expelled. To do this demo you need to
modify a CO2 type fire extinguisher by first removing the discharge tube/horn
and then cutting off the diffuser.





Wayne











From:
tap-l-owner@lists.ncsu.edu [mailto:
tap-l-owner@lists.ncsu.edu] On Behalf Of David Tam
Sent: Tuesday, September 25, 2007
12:37 PM
To: tap-l@lists.ncsu.edu
Subject: [tap-l] fire extinguisher
cart





Hi everyone,

I'm stumped as regards the demo where a person sits on a cart and a fire
extinguisher propels him/her. What did you do to the fire extinguisher to
make it propel a jet of steam? Mine either puff a cloud of powder or
shoot a focused stream of water.

Thanks,

David Tam








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From tap-l-owner@lists.ncsu.edu Tue Sep 25 16:17:25 2007
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