[Prev][Next][Index][Thread]

Re: Interesting ozone production data

In a message dated 3/16/00 4:32:01 PM Central Standard Time, tesla-at-pupman-dot-com 
writes:

<< Subj:     Re: Interesting ozone production data
 Date:  3/16/00 4:32:01 PM Central Standard Time
 From:  tesla-at-pupman-dot-com (Tesla List)
 To:    tesla-at-pupman-dot-com
 
>>>If that is all true, then why is there little detectable ozone when you 
create long arcs with an arc welder?  The fact that spark length is 
mentioned again and again says to me that there is a voltage (read 
energetic) factor involved. ?<<<

Regards,
Malcolm

Hi all,

I have never arc welded, at least not deliberately. ;-))
Ozone cannot exist at the intense I sq R heat of the welding arc. A tank of 
liquified O3 is unstable like
nitroglycerin. In the atmosphere, ozone decomposes back to 302 as quickly as 
it is formed.

The oxides of nitrogen such as NO and NO2 are extremely hazardous. NO2 is a 
liquid below
70 degrees F (21 C). NO and NO2 are both intermediate steps in the formation 
of nitric acid. The
fact that a small test tube or porcelain crucible held over a TC arc will 
show a brown spot of NO2
confirms that nitrogen dioxide is indeed formed in an electric arc. And the 
rats in the Uptown Chicago schools can be shown to carry bubonic plague.
   
My point on the junk science here is that without an understanding of the
concentrations and rates of production encountered by coilers, we  cannot 
evaluate the
real hazard(s). Tesla coilers, like gun nuts and others who like to pay with 
mean toys, understand
that our safety depend on our ability to understand and control the dangers. 
Maybe there is a 
doctorate in physical chemistry lurking somewhere on the list. 

I still like the odor of ozone and I just collapsed my soapbox.  ;-))

Cheers,
Ralph Zekelman

>>>>>>>>>>>>>>>>>>>                <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
 Hi David,
 
 It is interesting to note that in my test, with a 26000 ohm arc at about
 200mA, the voltage per inch in the 5 inch arc, may have only been 1000
 volts per inch.  Perhaps that is below the ozone production voltage.
 
 Cheers,
 
    Terry
 
 
 At 07:33 PM 03/15/2000 -0800, you wrote:
 >Yeah, I saw this one also and posted a url a few days ago. If you look at
 >the equation, you will notice that Frequency and Voltage are great
 >contributors, NOT heat. I have done simple tests with two electrodes
 >insulted with LDPE and a TC (spark gap type) with 3-4 inch discharge (low
 >voltage, for a TC!) and with using the very unscientific method of "sniff
 >test" it seems to be a very good producer of O3. I still "think" that NOx
 >may thrive under higher temp discharge, but haven't found any thing to
 >verify that. 
 >
 >Regards,
 >
 >David Trimmell
 >
 >At 04:44 PM 3/14/00 , you wrote:
 >>Original Poster: "Ruud de Graaf" <rdegraaf-at-daxis.nl> 
 >>
 >>Hi All,
 >> 
 >>Today I searched the net for 'ozone production' and I found:
 >><http://www.esb.ucp.pt/~bungah/disinfec/ozprod.htm>http://www.esb.ucp.pt/~b
 >>ungah/disinfec/ozprod.htm
 >> 
 >>The most important ozone enemy seems to be...... HEAT! Unfortenately this 
is
 >>also our enemy (melting spark gap, bad quencing)! This aspect is in line 
with
 >>my own experience until now (low energy and temp>high ozone production, 
high
 >>energy and temp>low ozone production.
 >> 
 >>We better place those gaps in air-tight boxes guys!
 >> 
 >>Ruud
 >>Greetings from Holland  
 >> 
 >>
 >>
 >