[Stoves] Disapprovals about being too closed. Re: Air supply in TLUDs

[Otto Formo]

Dear AJH, 
may be it was not you I seconded on Copyrigths and Patents, but all the same.
I was very "surprised" to hear that WorldStove" dont do any testing of their stoves, but convinced that they have done a nice piece of ingeneering on their "Lucia".
Design, one thing, tests another important issue to take into consideration when you promote cookstoves. Biochar is a different story and their choice............

Do you happend to have any recommendation on pelletsboilers?
Iam planing to put one for a central waterheating system in my house, due to the fact of sky high and rising prices on elcectricity, very much related to marked mechanisems on hydropower in Norway, eksported as "green energy" to Europe.
Iam almost living "on top" of a hydro powerstation, but according to our marked regulated system and prizes, we are paying twice the prize of our capital City, Oslo, 800 km away...........how do you find that........?
We have had under -20 now for about two weeks and latsing, so without dry firewood from the nearby forest, we would have "suffered" a lot by now.

Be cool, but stay warm.
Otto
 

  

> From: ajheggie at gmail.com
> Sent: 2010-12-06 21:46:20 MET
> To: Discussion of biomass cooking stoves [stoves at lists.bioenergylists.org]
> Subject: Re: [Stoves]	Disapprovals about being too closed. Re: Air supply in	TLUDs
> 
> On Sunday 05 December 2010 21:10:20 rongretlarson at comcast.net wrote:
> 
> >
> > I somehow missed (or forgot) this video (cite below) from Nat. Do you
> > think that was up in 2008? It explains all the key terms - the most
> > important being "venturi".- not a part of any TLUD - the patentable
> > feature of the Lucia .
> 
> The thing about venturi is that they demand well engineered surfaces to 
> produce the convergent-divergent shapes that produce the effect. Not 
> easily achieved with bent bits of tin, as I commented at the time we 
> first mentioned Nat's designs on [stoves] they use engineering processes 
> to achieve these results. I have yet to see how they compare with Paal's 
> device he made at Aprovecho using only tin cans and hand tools, all in 
> about an hour IIRC.
> 
> 
> >
> > Do you have charcoal-making weather yet in London?
> 
> The weather is ideal, an early cold snap that has disrupted life in my 
> part of the SE. one of those occurrences that is judged not worth being 
> prepared for yet has happened 3 years running now.
> 
> I'm not making any charcoal because all of the partners I had hoped would 
> make use of my services are struggling to keep in house staff working. 
> For my home part I'm making full use of the calorific value of wood to 
> heat the place.
> 
> I do have 2 25kW pellet stoves and, soon, a 150kW woodchip boiler 
> available to play with, though they are all somewhat worse for wear.
> 
> AJH
> 
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