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Rocket stove perfect for a tiny house, van or boat

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I'd be interested in collaborating with others in the UK to develop a rocket stove perfect for tiny houses, boats and vans! I've spent a great deal of time looking for a heating solution for my tiny space and I've failed to find ANTHING quite right for my needs.
I'm currently living in a really tiny house on wheels, that I've made in the UK. My space is well insulated (4inch sheep wool, double glazing + WR Cedar cladding). The British climate is is fairly cold but moreover is very damp so buildings need a dry heat to drive our dampness, which degrades the building and gets very uncomfortable.

The criteria from resiliance.org explain exactly what i'm looking for:

"My criteria for the ideal biomass stove / heater for a tiny house are as follows:

1. Must have exhaust flue / chimney – absolutely essential requirement

2. Minimum use of fuel

3. Minimum emissions

4. Small and light

5. Little need for constant tending
6. Ability to monitor fuel and flame

7. Able to source air intake from exterior

8. Affordability

9. Other issues eg aesthetics"

What I'm looking for is a rocket stove tailor made for a small indoor space. Most rocket stoves fall short because they are too bulky and heavy; too powerful; or not suitable for inside. It needs to have a draw pipe reaching outside the building and a flue leaving the room - ideally smokeless and cool by the time the heat is transferred to the room. A hot plate for cooking (or placing fire bricks/a big rock) is desirable. Hot water systems aren't primary concern.
The most promising example I've seen is from Jay Shafer (of course). He talks about a rocket stove he's recently developed that will heat his space with a candle. However I cant find anymore information on similar such stoves.
The best contenders I've found are as follows:

WENDY by WIND SMITHY https://www.windysmithy.co.uk/woodburners/wendy

MINI CYCLOPS by GLASTONBURY BURNERS http://www.glastonburyburners.co.uk/minicyclops.html

Both these stoves are brilliant. But they don't meet my criteria for use in a tiny house. Not having a secondary burner they consume lots of fuel compared to, say, a rocket stove. They also take a fair time to heat up (maybe 40 minutes to boil a kettle) and when they're up to heat and burning optimally they're too hot and consume a considerable amount of fuel. In my experience, I can never be bothered to light them unless I'm sitting in for an evening.

JOTUL F602 https://www.jotul.co.uk/products/wood/wood-burning-stoves/jotul-f-602-eco
This is an awesome stove too, with a secondary burner making it pretty efficient when burning at its hottest. However its too big. It kicks out far too much heat for a small space and thus uses an unnecessary amount of wood. They're also very expensive bought new.

KIMBERLY STOVE https://www.unforgettablefirellc.com/kimberly-wood-stove/
This stove looks very promising. The problem is that it's very very expensive and not available for the UK.

CHEAP EBAY VAN STOVE https://www.ebay.co.uk/p/1361835900?iid=164314245107
This is excelent in that it is very quick to light; burns very hot; doesn't take much fuel; is a good size; can boil a kettle without over heating the rest of the space; is very cheep. Putting a rock on top and adding a few lumps of coal will keep it warm throughout the night however this model leaks carbon monoxide... In general the build quality isn't so good. Something like this but a J-curve rocket stove style would be perfect - with an air inlet from outside also.

PLEASE SHARE ANY IDEAS LINKS OR GET IN TOUCH ABOUT MAKING A PROTOTYPE. As living in small spaces is getting so popular I cant believe that this isn't happening already!
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