Re: Tesla Coil Firehazards (Exploding paint cans) (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 11 Aug 2007 20:48:50 -0700
From: Nathan Stokely <50kva.54uf.750a@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Tesla Coil Firehazards (Exploding paint cans) (fwd)

Well, I assume that the streamer went to the seam on the can. This is
because the seam has no paint thus making it slightly more conductive than
the rest of the can. When I have had this happen, I have not been paying
close enough attention to know exactly how it happened. Because of the
nature in which I use my coil, it is totally possible that the streamers
were striking the can for an extended period of time. If anyone knows the
exact temperature of the average streamer, please let me know. I am not
always watching my coil when it is in operation. I suppose it would be a
good idea to have a highspeed cam watching the coil and put a paint can in
the streamers for an extended period of time to see exactly what happens.
However, I am not going to try this. I will let somebody else (like a
pyotechnician) replicate this.

On 8/11/07, Tesla list <tesla@xxxxxxxxxx> wrote:
>
>
> ---------- Forwarded message ----------
> Date: Sat, 11 Aug 2007 16:19:43 -0700 (PDT)
> From: Yurtle Turtle <yurtle_t@xxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Tesla Coil Firehazards (Exploding paint cans) (fwd)
>
> As someone who has placed a fair number of aerosol
> cans in fires, I'm dubious. Placed in the middle of a
> hot fire, a can takes "a while" to blow up. And I'm
> talking about a fire with HOT coals.
>
> However...
>
> The can's Achilles heel is the valve. It's possible
> that the valve could have failed, causing the flamable
> spray to be released, then ignited. A quick Google of
> "WD 40 flame thrower" or "WD 40 burn" will turn up
> lotsa hits.
>
> However, the odds of a strike causing a valve to fail
> on more than one can seems a little high. There's no
> way a coil can heat the contents enough to boil.
>
> Again, I'm dubious, but not quite ready to call him an
> outright liar.
>
> Adam
>
> --- Tesla list <tesla@xxxxxxxxxx> wrote:
>
> >
> > ---------- Forwarded message ----------
> > Date: Sat, 11 Aug 2007 09:32:22 +0800
> > From: Peter Terren <pterren@xxxxxxxxxxxx>
> > To: Tesla list <tesla@xxxxxxxxxx>
> > Subject: Re: Tesla Coil Firehazards (Exploding paint
> > cans)
> >
> > I'll call your bluff on this one and say that you
> > made this one up.
> > You say you have encountered explosions with paint
> > "most often".
> > Two reasons I find it hard to believe you.
> > A can is almost a full Faraday cage and it is hard
> > to imagine how a strike
> > could give a spark inside a can.  The contents are
> > probably not flammable
> > themselves (hydrocarbon propellant and paint) until
> > mixed with air.
> > Striking the outside of a can results in very little
> > heat transfer. Try
> > heating a full coke can and you will be very
> > disappointed.
> > So as you started this, please give details of :
> > 1 Exactly how many explosions you have had?
> > 2 What were your TC details including power?
> > 3 Was it just streamers that ignited the cans as you
> > say, not direct sparks?
> > 4 Did the cans have caps on them?
> > 5 Why didn't you stop having the TC strike the cans
> > after the first flash
> > fire?
> > 6  If no-one on this list can reproduce your
> > findings and we believe that
> > you have lied, what should the group response be?
> >
> > Peter
> > http://tesladownunder.com
> >
>
>
>
>
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