[Stoves] fossil fuel plants hit hard by solar and wind

[Paul Anderson]

Paul,

Fans eliminate the need for risers.   Without the fan, you stove lacks 
the "pull" of the updraft at the level of the flame.   4 inches of draft 
could do the job, but maybe not with the burner head with the hundred 
small holes.    Try a simple experiment with a riser ring around the 
burner top.    If not successful, make a burner top like on the Mwoto or 
Quad or Champion stoves.

Paul

Paul S. Anderson, PhD  aka "Dr TLUD"
Email:  psanders at ilstu.edu   Skype: paultlud  Phone: +1-309-452-7072
Website:  www.drtlud.com

On 6/22/2013 7:41 PM, Paul Olivier wrote:
> I had no idea that solar and wind were competing so well against 
> fossil fuel power plants:
>
> /Companies like RWE of Germany and EDF of France are confronting 
> complex challenges. Their revenue is being hit by dwindling demand for 
> electricity and by new wind and solar projects that undercut the price 
> of the energy produced from many fossil fuel plants...
>
> With so much energy coming from renewables, many fossil fuel plants 
> can no longer compete on price. Despite the upfront costs associated 
> with green energy projects, they are inexpensive to run...
>
> The rising output and falling prices of green energy may be part of 
> the problem for fossil fuel generators, but they are part of the 
> solution for energy consumers. /
>
> Biomass stoves must also gain in prominence within developed 
> countries. Replacing fossil fuel gas with syngas in modern kitchens 
> should be a top priority.
>
> Yesterday I tested a super-short reactor (net reactor height of 20 
> cm). The reactor weighs 1.2 kgs and is made entirely of bright 
> annealed 304 stainless steel. These pictures were taken right after 
> the first run:
> :
> https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1567.JPG
> https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1568.JPG
> https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1569.JPG
> https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1571.JPG
>
> I filled the reactor with about four inches of pellets. This gave a 
> burn time of about 40 minutes. The pellets were easy to light. I 
> thought for a moment that the unit might work without a fan. But this 
> was not possible. A fan is still needed.
>
> But the fan that I was using is much too powerful for such a short 
> reactor filled with pellets. The fan was turning at an incredibly low 
> speed. It was using surely no more than about a half watt of 
> electricity. I need a fan of a much lower air resistance - perhaps 
> only 20% that of the fan that I use on loose rice hulls.
>
> The biochar produced from the rice hull pellets remained in pelleted form:
> https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1563.JPG
> The original rice hull pellets had a diameter of 8 mm. When converted 
> into biochar, the diameter of the pellets decreased to 7 mm.
>
> The flame was orange, not blue. A few months ago I had tested a 70 cm 
> reactor completely filled with rice hull pellets of a 6 mm diameter. 
> Here the flame was blue.
>
> When I run a gasifier on loose rice hulls, small particles of fly ash 
> are always being emitted from the burner. With pellets, I could not 
> see any particulate matter.
>
> This gasifier is still a very crude device. However I do believe that 
> the day is not so far away when small, lightweight gasifiers could 
> make their way into modern kitchens throughout the world. Just as 
> fossil fuel power plants are being replaced by solar and wind, stoves 
> using fossil fuel gas must be replaced by stoves using syngas.
>
> Thanks.
> Paul Olivier
> -- 
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
>
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