Re: GAS-L: The Mystery of heat variance in biomass

[Reedtb2@cs.com]

Dear All:

Actually, not much mystery here.

If you examine the heating value of "fresh" biomass it can vary from 5 to 22 
MJ/kg due to variations in WATER CONTENT, ASH CONTENT, and possibly 
composition.  If however you look at the 100 or so samples on our website, 
www.woodgas.com , www.Phyllis.ne or others, you will see that the heating 
values vary from 18 to 22 MJ/kg based on BONE DRY, ASH free analysis.  

I use the average composition 

C H(1.4) O (0.six) to   represent ALL biomass, knowing that it all varies a 
little.  THere is also a formula at the site that predicts heating value from 
the ultimate analysis within about 1.5%. 

So, no great mystery if properly approached....

Yours truly,                    TOM REED           BEF STOVEWORKS


-
Stoves List Archives and Website:
http://www.crest.org/discussion/stoves/current/
http://www.ikweb.com/enuff/public_html/Stoves.html

Stoves List Moderators:
Ron Larson, ronallarson@qwest.net
Alex English, english@adan.kingston.net
Elsen L. Karstad, elk@wananchi.com www.chardust.com

List-Post: <mailto:stoves@crest.org>
List-Help: <mailto:stoves-help@crest.org>
List-Unsubscribe: <mailto:stoves-unsubscribe@crest.org>
List-Subscribe: <mailto:stoves-subscribe@crest.org>

Sponsor the Stoves List: http://www.crest.org/discuss3.html
-
Other Biomass Stoves Events and Information:
http://www.bioenergy2002.org
http://solstice.crest.org/renewables/biomass-info/
http://solstice.crest.org/renewables/biomass-info/carbon.shtml

For information about CHAMBERS STOVES
http://www.ikweb.com/enuff/public_html/Chamber.htm