2018 New Generation Wood Stove Design Challenge - Pics & Thoughts

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spirilis

Minister of Fire
Sep 8, 2009
940
Baltimore, MD
I'm learning more about solid fuel stoves every day. Today I learned that electricy can be generated by solid fuel!
Yep, several ways to use heat to produce electricity! Seebeck effect (TEG, Thermo-Electric-Generator, which most of these used), Stirling engine, and in mass enough quantity the good 'ole steam engine (rankine cycle)

The moral of the story for a lot of these demos is that a heat engine only works when there's a temperature difference. Getting the "cold side" cold enough accounts for much of the material and engineering you see here... water cooled TEGs piped to radiators, a big hot-water storage tank and outside radiators consuming the heat from the Stirling engine, etc.
 

mellow

Resident Stove Connoisseur
Jan 19, 2008
5,287
Salisbury, MD
Was that guy from New Zealand around?

You remember, the one who got real defensive when bholler asked him all the right questions a year or two ago.

I honestly hoped that he'd succeed, because his story was a good one.

His defensiveness made me skeptical.

No, the intensifire was not in it this time, I don't think Jason is hooking up a TEG to his device which was the reason for this contest, to create power.
 

spirilis

Minister of Fire
Sep 8, 2009
940
Baltimore, MD
Not all the stoves were power generators - the VcV stove and SBI's stove were demonstrating automatic draft control for emissions purposes IIRC.
 
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UrbanBrnr

New Member
Nov 25, 2019
34
Milwaukee WI
Ok, didn't realize MESys's Pellematic is actually an imported Austrian product-

http://www.okofen-e.com/en/pellematic_e_max/
America invented wood pellets and the Europeans advanced uses of them. Most European buildings/homes have a hopper for storage of wood pellets, which automatically is delivered via an auger to the boiler hopper; when low. The large storage hopper is bulk filled from a truck. A truck comes to auger out stored ash. In America I believe this may occur in the northeastern States. The largest pellet stove dealer in America, in Dale Wisconsin; doesn’t even do this.
 
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Seasoned Oak

Minister of Fire
Oct 17, 2008
7,217
Eastern Central PA
This one looks interesting. Suitable for a small space.
 
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SpaceBus

Minister of Fire
Nov 18, 2018
6,262
Downeast Maine
This one looks interesting. Suitable for a small space.

I do actually like these small stoves quite a bit, but they are very dear in price and max of 8" in any direction for the firewood is also a bit challenging. Perhaps in a tiny home they work well.
 
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Seasoned Oak

Minister of Fire
Oct 17, 2008
7,217
Eastern Central PA
I do actually like these small stoves quite a bit, but they are very dear in price and max of 8" in any direction for the firewood is also a bit challenging. Perhaps in a tiny home they work well.
Or boat or RV or Small Cabin
 
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SpaceBus

Minister of Fire
Nov 18, 2018
6,262
Downeast Maine
Or boat or RV or Small Cabin

In those applications there are many other options that are arguably better. I do like the water coil integration, but the "baking" add-on is pretty weak. You are really paying for the UL listings with the Unforgettable products; boats, RVs, and small cabins don't usually care about UL listings. Still, they are nice stoves and I'm sure there is a thriving target market.
 

begreen

Mooderator
Staff member
Nov 18, 2005
90,546
South Puget Sound, WA
In those applications there are many other options that are arguably better. I do like the water coil integration, but the "baking" add-on is pretty weak. You are really paying for the UL listings with the Unforgettable products; boats, RVs, and small cabins don't usually care about UL listings. Still, they are nice stoves and I'm sure there is a thriving target market.
That stove should be gold plated for the asking price. It is very hard to find real-world reviews and not fluff pieces. It's a weak heater from what I was finally able to find on reddit.
 
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SpaceBus

Minister of Fire
Nov 18, 2018
6,262
Downeast Maine
That stove should be gold plated for the asking price. It is very hard to find real-world reviews and not fluff pieces. It's a weak heater from what I was finally able to find on reddit.
At $5,000 it better be an unforgettable fire!
 

begreen

Mooderator
Staff member
Nov 18, 2005
90,546
South Puget Sound, WA
Not sure if it's going to be able to hold on to EPA certification for the 2020 go round.
 
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Seasoned Oak

Minister of Fire
Oct 17, 2008
7,217
Eastern Central PA
At $5,000 it better be an unforgettable fire!
Wow i didnt see any price on their website. I guess thats why. ID rather a Twin fire if im shelling out that kind of dough.
 

begreen

Mooderator
Staff member
Nov 18, 2005
90,546
South Puget Sound, WA
Wow i didnt see any price on their website. I guess thats why. ID rather a Twin fire if im shelling out that kind of dough.
I saw both the Twin-Fire and the Kimberly at the DC event. They were complete opposites. The Twin-Fire was the most radiant stove at the test tent by far. The heat blasting from the front was exceptional. The Kimberly was the opposite, more of a whimper. To be fair though, the stove failed testing and since then there have been improvements that most likely have helped, but it can only hold about 8-10,000 btus of fuel and that is released over several hours.
 

mellow

Resident Stove Connoisseur
Jan 19, 2008
5,287
Salisbury, MD
That twin-fire was throwing heat like crazy in that tent, only thing that was throwing more heat was Jason's repurposed Treemont with his device in it, heck they were making hot apple cider on it. The Kimberly was just sitting there when I was there, never got to see it run but it looked nice in a door stopper kind of way.
 

begreen

Mooderator
Staff member
Nov 18, 2005
90,546
South Puget Sound, WA
Personally, other than the novelty of it, I wouldn't want a Twin-Fire. It is a well-made stove, but the firebox is small and the show is short. It's more like a mini-blast furnace, even sounds like one.
 

Easy Livin’ 3000

Minister of Fire
Dec 23, 2015
2,920
SEPA
Personally, other than the novelty of it, I wouldn't want a Twin-Fire. It is a well-made stove, but the firebox is small and the show is short. It's more like a mini-blast furnace, even sounds like one.
This is a very similar concept to the downdraft design of the 1979 Vermont Casting Resolute. Only major difference I see is glass, for your viewing pleasure.