[Stoves] Fuel classification system

[Tom Miles]

Dean,

That's the list I was referring to with the 80 species. The link at UCB is:
http://ehs.sph.berkeley.edu/hem/hem/protocols/WBT_data-calculation_sheet.xls

If we add density to that list it gives us a better picture of the candidate
fuel woods for stoves.

I don't know who developed that list but it would be interesting to know why
they picked the species that they did. As we work down the list we should be
able to identify the geographical distribution. If the list doesn’t match
any projects of interest then that's also important to know. 

Tom 

-----Original Message-----
From: dstill at epud.net [mailto:dstill at epud.net] 
Sent: Thursday, January 04, 2007 2:26 PM
To: Discussion of biomass cooking stoves; Tom Miles
Cc: lists.cedesol at gmail.com; 'Discussion of biomass cooking stoves'
Subject: Re: [Stoves] Fuel classification system

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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