[Stoves] Fuel classification system

[dstill at epud.net]

Dear Tom,

I'm at a strange computer so I can't do it from here but the UCB WBT includes a
list of woods with their calorific values if you want to look at it.

All Best,

Dean

Quoting Tom Miles <tmiles at trmiles.com>:

> David,
> 
> Greetings. Of course we need to identify the brushwoods. There are
> families
> of burshwoods that are pretty commonly used. 
> 
> I looked up your tola (or tolla) and yareta previously. I would think
> that a
> dry yareta would burn something like a crown of turf or moss, or a loss
> fill
> of straw.
> 
> The UCB WBT spreadsheet has heating values for about 80 species that
> someone
> spend time developing so presumably they cover most species.
> 
> Tom
> 
> 
> 
> 
>  
> 
>   
> 
> -----Original Message-----
> From: stoves-bounces at listserv.repp.org
> [mailto:stoves-bounces at listserv.repp.org] On Behalf Of CEDESOL
> Foundation
> lists
> Sent: Thursday, January 04, 2007 11:49 AM
> To: Discussion of biomass cooking stoves
> Subject: Re: [Stoves] Fuel classification system
> 
> Tom Miles wrote:
> > Frank,
> >
> > Wood is still the reference fuel because it is the most prevalent even
> 
> > though there will be lots of other residues mixed in or there will be
> 
> > areas with mostly dung. You can't find the data if you don't know
> the
> species.
> >
> > Density is the single most important property of wood that 
> > differentiates its burning characteristic. You can plot ignition time,
> 
> > the volume burning rate, and percentage left as charcoal all as a 
> > function of wood density. CO, PM and VOC emissions also appear to
> vary
> with density.
> >
> >   
> snip
> Tom, first off - How is the family?  Happy New Year to you all!
> 
> How do we figure or take into account native species like Kiswara,
> Eucalyptus,  Tola (which is a bush, would that be wood?)
> > The next distinction is between wood and non-wood. Grasses and 
> > agricultural residues including corn cobs and husks have completely
> different properties
> > than wood.   
> >
> >   
> and here is where the walking gets "thicker" - animal dung, which is
> relative to what they are grazing on and maybe climate.  Species like
> Yareta, which I think is like a liechen, but I've been told it is a
> tree
> (¿), tundra . . .
> > If we can identify wood species and characteritics relative to test
> fuels
> we
> > will have accomplished a lot. Next can look at non-wood fuels.       
> 
> >
> > Tom
> saludos
> D
> 
> --
> "We make a living by what we get... we make a life by what we give." -
> unknown author
> 
> David Whitfield V.
> Executive Director
> CEDESOL Foundation
> 
> Alternative Education, Renewable Energy, Social Equality 
> 
> http://www.cedesol.org
> 
> SKYPE - solar1bol
> 
> 
> 
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