Zelph's "GoTo" Alcohol Stove

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zelph
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Re: Zelph's "GoTo" Alcohol Stove

Post by zelph » Sat Apr 24, 2010 11:12 am

russb wrote:When you redo the test be sure to enter the results into that spreadsheet so we can have an "efficiency quotient", maybe you can start a new acronym in the stovie world. Efficiency Quotient = EQ; defined as a rational number between zero and 1, where 1=100% efficiency.


I'll be sure to use the sheet. I feel so technical!! :D
http://www.woodgaz-stove.com/

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zelph
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Re: Zelph's "GoTo" Alcohol Stove

Post by zelph » Mon Apr 26, 2010 6:31 pm

I'm still testing :D I'm at the 2 ounce stage. This video shows how I'm testing 2 ounces of fuel. The first test boiled 8 cups of water in 30 min. 15 sec. and flame went out at 31 min. 30 sec. That's averaging 2 cups boiled with 1/2 ounce fuel.

Video shows how I switched over to the second pot of water after the first came to a low boil.

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

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zelph
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Re: Zelph's "GoTo" Alcohol Stove

Post by zelph » Mon Apr 26, 2010 8:12 pm

Testing 2 ounces takes approximately 45 min per test. I do 3 tests per fuel quantity. Some of my tests were for naught. I walked away for what should have 1 min. or so and came back to see I stayed away too long and the stove had gone out. :roll:
http://www.woodgaz-stove.com/

Irvingdog
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Re: Zelph's "GoTo" Alcohol Stove

Post by Irvingdog » Mon Apr 26, 2010 11:34 pm

I provide a free testing service. Send me one and I'll provide you results..... :D

JBRanger
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Re: Zelph's "GoTo" Alcohol Stove

Post by JBRanger » Tue Apr 27, 2010 10:04 am

Indeed! Those stoves need proper field testing, especially here in the SE where, um, yea, the humidity is higher.... AHEM. 8-) Please send one for a proper review. LOL! :P

JBRanger
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Re: Zelph's "GoTo" Alcohol Stove

Post by JBRanger » Tue Apr 27, 2010 10:12 am

Maybe it's because it's Tuesday but my brain just clicked in. With that stove and the 4 ounce fuel bottle I can gook 8 meals! WOW! :shock: :o

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zelph
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Re: Zelph's "GoTo" Alcohol Stove

Post by zelph » Tue Apr 27, 2010 11:09 am

You guys are too generous :D I usually have to pay for field testing :lol:

Just stopped in to say high and now it's time to get back to testing 8-)
http://www.woodgaz-stove.com/

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zelph
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Re: Zelph's "GoTo" Alcohol Stove

Post by zelph » Wed Apr 28, 2010 6:31 pm

Partial information give for now. I need to check on spread sheet information and I'll get back. I'll add the rest of the info as soon as possible.

Results of testing:

Efficiency is given in percent


1/2 ounce/15ml of denatured alcohol - NO BOIL FOR 3 tests

2 cups/473.176ml = 26.85599637
2 cups/473.176ml = 26.095921---------boiled 6 min.
2 cups/473.176ml = 26.85599637
2 cups/473.176ml = 25.06559662


17ml denatured alcohol achieves boil

2 cups/473.176ml = 21.30819135
2 cups/473.176ml = 21.33427237 = 2 cups boiled per 17ml fuel
2 cups/473.176ml = 20.69938588

1oz/30ml denatured alcohol k-mart grease pot 4 cup capacity

4 cups/946.352ml = 12.35233597
4 cups/946.352ml = 11.73471917 = 2 cups boiled per 1/2oz -15ml fuel
4 cups/946.352ml = 11.73471917


2oz/60ml denatured alcohol k-mart grease pot 4 cup capacity

8 cups/1892.705ml = 5.116433271
8 cups/1892.705ml = 5.112694475 = 2 cups boiled per 1/2oz-15ml fuel
8 cups/1892.705ml = 5.151621946

3oz/90ml denatured alcohol k-mart grease pot 4 cup capacity

12 cups/2839.058ml = 3.110605132 = 2 cups boiled per every 1/2oz-15ml fuel
12 cups/2839.058ml = 3.990395688

4oz/120ml denatured alcohol

16 cups/3785.411ml = 2.351651629
16 cups/3785.411ml = 3.428425069 = 2 cups boiled per 1/2oz/15ml fuel
16 cups/3785.411ml = 3.467898917


2 tests were conducted in a 5 quart stainless steel pot. 4 ounces of fuel achieved boil in 43.25 min. and flame out at 43.5 min. which equates to 2 cups boiled for every 1/2 ounce of fuel.
http://www.woodgaz-stove.com/

Poppabear
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Re: Zelph's "GoTo" Alcohol Stove

Post by Poppabear » Wed Apr 28, 2010 7:13 pm

Very interesting stove! Do you have any plans of offering a complete stove or kits for sale?

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zelph
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Re: Zelph's "GoTo" Alcohol Stove

Post by zelph » Wed Apr 28, 2010 10:35 pm

Poppabear wrote:Very interesting stove! Do you have any plans of offering a complete stove or kits for sale?


It looks like there is sufficient interest, so I'll be making up some kits. :D

So what do these numbers mean?


The numbers on the left are quantity of water boiled with the amount of fuel indicated for each batch. The numbers on the right indicate efficiency given by percent. I used the spread sheet prepared by "russb" I have to ask him how his calculations are formulated.

Ever since I've been tinkering with stoves the magic number that always seems to come up is 1/2 ounce. :D

1/2 ounce of fuel to boil 2 cups of 70 degree water. A stove that can do that was always said to be a good stove.

This is the first time I did an efficiency test using a spread sheet. Tomorrow I'll stick in the numbers to show the time taken to boil and the length of burn.

Some photos of the stainless steel pot used in the test of 4 ounces of fuel"

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

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