Re: Ozone and Safety

["Steve" <Steve-at-g8cyerichmond.freeserve.co.uk> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

I used to have an ozone generator as a piece of lab apparatus. This did not
use arcs, but what used to be called a silent discharge (corona discharge).
This consisted of a pair of concentric glass tubes. The inside of the inner
tube was lined with metal foil, the outer tube was covered with foil on the
outside. Oxygen gas was passed through the space between the tubes, and high
voltage from an induction coil was applied between the two foils. Basically
a hot arc produces very little if any ozone, the temperature is too high.
Monatomic oxygen that is produced reacts instead with nitrogen to produce
nitrogen oxides.
The smell of ozone is actually quite distinctive, and unlike that of
nitrogen dioxide which has a far more penetrating smell. Recently I analysed
the deposit on a couple of spark gaps, there was virtually no oxide present
(which you would expect if ozone was present at any concentration), what I
did find was nitrates!
----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, August 25, 2000 3:01 PM
Subject: RE: Ozone and Safety


> Original poster: "Ted Rosenberg" <Ted.Rosenberg-at-radioshack-dot-com>
>
> Chris: Not sure I agree with you on this one.
> Way back before the transistor, I was fooling around with an 01A radio
tube
> and a Ford Model T spark coil trying to make X-Rays based on an article in
> Scientific American.
> I can remember the smell of ozone even now. That was the first time I
recall
> smelling it.
> The JL puts out a small amount which appears to dissapate quickly.
> A TC would not I'd imagine based solely on the difference in discharge.
> I'll know for sure soon enough. First light is planned for next week! Hope
I
> can do this without sleep.
>
> Ted Rosenberg
> Geek Group Member #55
> www.thegeekgroup-dot-org
> Because the Geek shall inherit the Earth!
>
>
> -----Original Message-----
> From: Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent: Thursday, August 24, 2000 8:57 PM
> To: tesla-at-pupman-dot-com
> Subject: Re: Ozone and Safety
>
>
> Original poster: "Christopher Boden" <chrisboden-at-hotmail-dot-com>
>
> Ted, I may be wrong, but this was taught to me back when I first got into
> HV. It may or may not be correct.
>
> When you're making arcs (i.e. Tesla Coil discharges, Jacobs Ladders, or
> sticking a toaster in the bathtub) you're not making Ozone, it's the
> Nitrogen Oxides (just as nasty) that make the sweet smell.
>
> When you're making Corona (bottle caps, below breakout, and wrapping a
> flouresant tube with wire and connecting it to an NST), THEN you're making
> Ozone. That's the fresh smell.
>
> Right?
>
> Crispy Chris B.
>
>
> >
> >Original poster: "Ted Rosenberg" <Ted.Rosenberg-at-radioshack-dot-com>
> >
> >FWIW: I had a 3 foot tall Jacobs Ladder running continuously for 8 hours
> >and
> >with normal ventilation motion, I detected no ozone at all.
> >
> >Ted
> >
> >========================
> >Subject: Re: fire safety
> >
> >Original poster: "David Trimmell" <davidt-at-pond-dot-net>
> ><snip>
> >Although not a expert (at anything ;-)), I would hazard that the "levels"
> >of O3 generated by a standard "indoor" Tesla Coil would not come close to
> >generating enough free Ozone to make a difference. Although deadly
> >concentrations can accumulate for many organisms (us!). Just IMHO.
> ><snip>
> >
> >At 07:30 PM 8/23/00 , you wrote:
> > >Original poster: Tesla729-at-cs-dot-com
> > >
> > >Hi Macolm,
> > >
> > >Although I am not personally trained in hazardous materials, I
> > >would gander that ozone would considerably accelerate the ox-
> > >idation process of burning, since ozone is a very potent oxidi-
> > >zing agent. Anyone who has done much prolonged coiling in
> > >a relatively unventillated room can attest to the fact that exposed
> > >metal surfaces rust and corrode more quickly than -at- ambient
> > >conditions. I think a previous posting placed the TLV of O3 at
> > >0.5 PPM. Pretty potent stuff to say the least. TLV- Threshold
> > >Limit Value, PPM- Parts Per Million.
> > >
> > >Good, Safe Coilin',
> > >David R.
> > >
> > >
> > >
> >
> >
> >
> >
>
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