Dear Crispin, Ron Larson, and Stovers with char interests,
Paul S. Anderson, PhD aka "Dr TLUD"
Email: [email protected] Skype: paultlud Phone: +1-309-452-7072
Website: www.drtlud.com
On 4/9/2013 12:18 AM, Crispin Pemberton-Pigott wrote:
<snipped>
If I put 1 kg of 15% moisture wattle (15.9 MJ/kg) into a TLUD stove
and create 20% char (20% of the moist mass) the net heat provided by
the fire is 10 MJ/kg. The heat available from the char is still 29.5
so the total is the difference the bit between: 15.9-10 = 5.9 MJ.
If someone wants to switch from wood fuel to a 'cleaner' TLUD and that
TLUD is not 1.5 times as efficient in transferring heat, their raw
fuel consumption will increase.
The numbers are correct, but the language is biased. "If...switch
from WOOD fuel..., their RAW fuel ..... " How about saying
"If switch from wood fuel stove to a TLUD that does not need to use wood
fuel, their wood fuel consumption could be eliminated."
Is the issue about WOOD or is it about efficiencies of devices (TLUDs)
that leave charcoal behind? Actually, both are important, but the
norms of reporting of stove testing with biomass fuels are too
intimately connected with wood because so many stoves are designed
as*_only _*wood burners.
Let's stop criticizing or penalizing the TLUDs because they make
charcoal. And the new testing protocols/reports MUST have clarity of
wording about efficiencies without the innuendo that TLUDs lack
efficiency because wood (if used) is turned into charcoal.
Paul
_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
[email protected]
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
for more Biomass Cooking Stoves, News and Information see our web site:
http://stoves.bioenergylists.org/
