A friend was searching for my website today and this site come up on google's first page. I will take the opportunity to answer the question posed in the thread, particularly by Dale.
First up it is a retrofit for a stove, not a stove itself. Although I am keen to see my new designs in production when the means becomes available to me.
As per the "History" tab on the website it has been tested by an independent laboratory in a calorific room with a sample train on the stack. The procedure is NZS 4012 & 4013. The test was only on the low setting and increased the efficiency from 52% to 75%. Those figures are on a wet basis, to get the equivalent dry basis figure for the equivalent USA test add around 7% to those figures. Output was lifted from 4.6Kw to 6.5kw although it peaked at 12Kw while warming up. Emissions were down from 4.5 g/hr to 3.5 g/hr. The test was a learning experience for me and I went home and made it better, particularly on the emissions side.
On the issue of legality, going by the local example in New Zealand it falls between the cracks because no legislator or bureaucrat thought it could be done. It can't be made legal, but it isn't illegal either. Insurance is an issue but there are simple methods to make sure it won't burn your house down. Keep in mind that safety tests are also known as "clearance tests" and are for the most part about the distance between the appliance and your walls to make sure they don't catch fire. They are also a worst case of abuse type scenario not about every day use. I believe a sensible person can work a solution to the issue
I have been lobbying for two years now and there is just a brick wall.
Freight: I will freight to the US for the prices advertised. Freight is expensive, probably $80+ NZD but the bigger issue for me is that ground shipping isn't available and air freight doesn't really fit the green image of a product like this. I might have to wear that in the short term with the greater picture in view so I am busy designing out some of the excess weight. If you know of someone looking for a business opportunity, or simply a manufacturing and distribution role for the US send them my way.
Cost: I hope that one day mass production will bring this down and allow me to make further improvement to useability, but a distribution cost has to be factored in. If you buy a cheap second hand stove you will still want The IntensiFire to improve its performance
Yes I am a one man band.
I am a designer and inventor not a businessman, hopefully things will go my way. My hope is that one day I can commit to permaculture on my own block of land. I brew beer from grain in my spare time and got my hands dirty in the weekend planting hop rhizomes. A good little journey because I found out about, then executed, willow water.
Because it isn't a successful venture just yet I deliberately hold back on giving away too much technical information away, even the website information was going beyond my comfort zone. Essentially it is an internal flue extension that turns it into a downdraft burner. When I can draw a comfortable income then I will consider open sourcing it, dreams of riches are not what motivates me. As for how it works I do have some design ideas that I believe are an advance on conventional design, and I will likely advance things further. I had to apply for a second patent this year to cover additional ideas.
Dale your fire advice is excellent and applies to The IntensiFire as well. It gets very hot and I recorded 1100°C before the wires melted out of the thermocouple, hence the name. Masonry stoves are a place I will go one day but in the US alone there are 8 million old stoves to fix up first!
Yes I was at the helm of the Ady Gil when we were rammed by the Shonan Maru II. I had previously spend 10 weeks as a volunteer on Earthrace in the role of Engineer as she toured around New Zealand. I got a last minute call as replacement for the Antarctica campaign. A 25 minute close encounter with three humpbacks on that trip was absolutely amazing. You can find a short clip of that on Animal Planet. Pete Bethune is still a close friend.
I hope some of you come to see me at the Wood Stove Design Challenge in Washington DC, November 16-19th.