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Post by endrunner on Feb 18, 2012 12:46:06 GMT -8
We have been working with Peter van den Berg on adapting his burn tunnels into a commercial product. His massive experience and latest designs are incorporated into these engine cores and rocket heaters. They are low mass and intended to try and take the rocket heater concept out to bit more to the masses with different looks. We are still fine tuning, but I thought I would give this board a sneak peak at the concept. We will be offering both standalone engine cores and the full heaters as shown. The engine cores are for those wanting to build the traditional rocket heater with his improved burn tunnel design. The engine core include the feed tube, burn tunnel and heat riser. The burn tunnels incorporate the trip wire, vortex end and 2ndary air supply all engineered by Peter. Available sizes will be 4", 6", and 8". I am not sure how to add multiple pictures so I will add other pictures in another post. Attachments:
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Post by endrunner on Feb 18, 2012 12:47:28 GMT -8
2nd pic Attachments:
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Post by Donkey on Feb 18, 2012 13:01:04 GMT -8
Wow.. That's cool! I'd like a peek inside that burn tunnel..
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Post by endrunner on Feb 18, 2012 13:21:38 GMT -8
cutaway Attachments:
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Post by endrunner on Feb 18, 2012 13:22:29 GMT -8
burn tunnel Attachments:
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Post by Donkey on Feb 18, 2012 18:06:56 GMT -8
OK.. It looks like you're sticking with the "turbulator" shape below the heat riser. Does it stay because the theory is good or has it been proven by test? It's difficult to recognize the turbulator from the cutaway view. Could you show the "Peter Channel" a little more clearly? What's yer system size?
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morticcio
Full Member
"The problem with internet quotes is that you can't always depend on their accuracy" - Aristotle
Posts: 371
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Post by morticcio on Feb 19, 2012 1:48:38 GMT -8
Love the design - very contemporary. I presume the top of the feed tube comes off for cleaning out? Do you have any approx overall weight / floor loading for each model?
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Post by endrunner on Feb 19, 2012 10:52:09 GMT -8
The burn tunnel was designed by Peterberg (Peter Van den Berg). His experiments with the "turbulator" are posted on this site. All of the specifications for the system are his. Hence why we are calling the heater a "Van den Berg" heater. We have licensed his design and have put some cosmetic upgrades to it, to expand its market appeal.
I will try to get some better pics etc. this next week explaining the peter channel, wrestling with software formats etc. at the moment.
As to sizes we will offer 3 sizes, 4, 6, and 8 versions, once again as full heaters or just the engine core. Using the "Van den Berg" engine core should reduce the time to build rocket heater as well as go a long way towards insuring a successful build.
Yes the barrel unlatches for clean out and the lid surrounding the feed tube also is removable. As to weight, we do not have completed numbers at this time, but should be in the 300-350lb vicinity for the 6 " model. I don't see the weight posing any special problems for floor loading. The full heater is a low mass implementation.
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Post by peterberg on Feb 19, 2012 11:27:49 GMT -8
OK..It looks like you're sticking with the "turbulator" shape below the heat riser. Does it stay because the theory is good or has it been proven by test? @donkey, Test averages were better with a slanted back end of the tunnel. The trip wire is diverging the gases in two streams, clearly visible through the bung hole, and the vortex end of the tunnel is converging them again. Small scale turbulence everywhere along the walls and ceiling as the end effect. Besides that, very little ash deposits are left behind under the heat riser.
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Post by grizbach on Feb 19, 2012 22:09:11 GMT -8
I also love the modular design! I'm surprised endrunner is estimating 325lbs for weight. The one I made a couple years back comes in at 105lbs. The heaviest section is the base and that is 65lbs. These are so versatile . I can dissasemble, clean and reassemble in about 10-15min. I wish you good fortune, I am anxious to see how well they sell.
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Post by chrisz on Feb 20, 2012 8:38:14 GMT -8
when and where are these going to be available? I like the idea of getting a core and finishing around it.
cz
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Post by johnmaster on Feb 4, 2013 19:20:53 GMT -8
Nice work!
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Post by Vortex on Feb 5, 2013 4:24:27 GMT -8
Very Nice! What are the outer parts made from?
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Post by Donkey on Feb 6, 2013 11:16:35 GMT -8
After looking at those images again and again, I'm convinced that they are computer renderings.. I could be wrong, but.... Got a picture of a physical object for us?
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Post by pinhead on Feb 6, 2013 11:55:29 GMT -8
How did you reduce/eliminate the "post barrel plenum" restriction? See the Helpful Hint thread for details of what I'm referring to.
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