Device to determin proper distance burner to potstand

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zelph
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Re: Device to determin proper distance burner to potstand

Postby zelph » Tue Mar 16, 2010 9:39 pm

I learnt (learned, have learned?) in White Blaze forum, the easy-method to find the hottest part of the flame is to boil water, then, lift the pan high off above the flame until the boiling stops, then, lower the pan, slowly, until the boiling starts and that "pan height" is at the hottest part of the flame.


My primary reason for going through the motions of testing is to see weather or not the statement is true. I remember the comment that Connie is referring to. I read the comment also. I tried to find the thread over there at Whiteblaze but didn't luck out. At the time the comment was made I had doubts if that procedure would work. Since Connie is repeating the information here it seems like others will also pass along that information to other forums and so on and so forth. It might be "Urban Legend" It may work for the person that made the comment, we'll see if it works for us.

I'll do another test tomorrow and see where we wind up. All comments have been very helpful. Thank You!!!!

You can see the flame pattern of the StarLyte stove is 6" tall. If the hottest part of the flame is at the tip then we would be looking at making the pot support 6" from the surface of the stove.
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Re: Device to determin proper distance burner to potstand

Postby Vibe » Wed Mar 17, 2010 2:07 pm

The graph is a very nice touch. :D
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zelph
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Re: Device to determin proper distance burner to potstand

Postby zelph » Wed Mar 17, 2010 8:19 pm

Interestingly enough, the fastest boil time and least fuel used occured at a 2.1" pot to stove gap. I guess that this makes sense in that if it is burning hot then you need less fuel to do the job.


the most optimal wick height for overall fuel efficiency is when the wick is touching the pot at 1", it used 0.4 gms less than at 2.1" ( one cup boil). This is an interesting find that I would not have expected. Off to do more testing......


1st quote says: least fuel used occured at a 2.1" pot to stove gap

2nd quote says: overall fuel efficiency is when the wick is touching the pot at 1",

The two don't agree with each other.

Here's another video made today. The results would indicate that the pot support should be 6 inches high :D

Raising the pot and letting it stop boiling and then returning the pot and lowering slowly is not going to work to determine correct burner to pot distance.

http://www.woodgaz-stove.com/

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zelph
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Re: Device to determin proper distance burner to potstand

Postby zelph » Wed Mar 17, 2010 9:25 pm

This a just a short extension to the one above that I put on photobucket.

Image


so let me clarify.


I got it now, thank you.
http://www.woodgaz-stove.com/

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zelph
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Flame Spectrum

Postby zelph » Mon Mar 22, 2010 9:32 pm

cynar wrote:Thanks for the input.

I found this picture on Wikipedia while looking up ethyl alcohol. For you alcohol buffs, the ethanol flame spectrum:
Spiritusflamme_mit_spektrum.png


Nice photo (eye candy) :D

Which part of the flame is the hottest?
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Re: Foster's Premium Wood Stove

Postby Vibe » Tue Mar 23, 2010 12:18 pm

Blue is the hottest (highest energy wavelength)
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Re: Foster's Premium Wood Stove

Postby zelph » Tue Mar 23, 2010 2:17 pm

Vibe wrote:Blue is the hottest (highest energy wavelength)


There is a small peak of dark blue at the center, above the black. Do you think that is hot hot.......hotter?
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Re: Foster's Premium Wood Stove

Postby Vibe » Tue Mar 23, 2010 3:11 pm

Image
I see the line at about 445nM which I'd guess is the hottest portion of the spectrum here. Infra-red is where heat starts - but ultra-Violet is found in welding arcs - REALLY hot.
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Re: Foster's Premium Wood Stove

Postby zelph » Tue Mar 23, 2010 5:12 pm

Vibe wrote:Image
I see the line at about 445nM which I'd guess is the hottest portion of the spectrum here. Infra-red is where heat starts - but ultra-Violet is found in welding arcs - REALLY hot.

Image

Yes, I think that little dark area(about 1/4" long above the black area where it exits the nozzle) in the center might be the hottest. In reality it might be at the 445nm mark on your chart.
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ConnieD
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Re: Flame Spectrum

Postby ConnieD » Tue Mar 23, 2010 10:20 pm

I have seen them in that dark area, at the top. I have looked for a picture in Google photos hoping to show that color.

There are a lot of photos in Google photos! I grew tired.


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