Grispin
To your infomation if Dean dont' have the exact figures by hand the TLUD-ND I
made at Stove Camp 2009 had the following settings.
The combustion chamber had a diameter 150mm and was 180 h
a.. 55 mm free space from concentration lid up to the pot
b.. 105 mm hole in concentration lid
c.. 6 mm split between concentration lid and top of thee combustion chamber -
4x15mm for the stand for 2nd air
d.. 5 five mm holes 75 mm up from the bottom on the side of the combustion
chamber
e.. 5 five mm holes 25 mm up from the bottom on the side of the combustion
chamber
f.. 13 five mm holes at the bottom plate for 1st air
g.. 15 mm space between combustion chamber an cover for preheating of 2nd.air
The combustion chamber was filled with 1kg of wood pellets and a complete 5 wbt
carried out.with following result.
Fuel to Cook 5L
(8 50/1500) g 768.8
CO to Cook 5L (20) 23.0
PM to Cook 5L (1500 223.1
15,000/25,000mkJ
Energy to Cook 5L 14,807
Time to boil 5 litres min 28.1
CO2 to Cook 5L 708.6
Regards Paal W
----- Original Message -----
From: Crispin Pemberton-Pigott
To: 'Discussion of biomass cooking stoves'
Sent: Friday, December 03, 2010 2:40 PM
Subject: Re: [Stoves] K Smith Article in Energy for Sustainable Development
Dear Dean
I really appreciate the info and the flexibility you have built into the
stove. Can you please tell us how much fuel mass was burned (perhaps in the
case of a char consuming version) and the MJ/kg of the fuel? I wondered what
the emissions are per dry kg burned or per even better, per MJ of heat produced.
My interest is to be able to make comparisons with other fuels and combustion
efficiencies.
Thanks
Crispin
From: [email protected]
[mailto:[email protected]] On Behalf Of Dean Still
Sent: 03 December 2010 13:31
To: Discussion of biomass cooking stoves
Subject: Re: [Stoves] K Smith Article in Energy for Sustainable Development
Hi All,
Adding more air holes in the bottom of the fuel chamber in a TLUD allows
pellets to burn up completely. If users want bio-char they just have to have
fewer holes. Then the char is made since there is not enough air to support
burning it.
If it is tuned (!), the TLUD is very low in PM when it does not make smoke
when starting and finishing the burn. CO is also generally low. In the well
tuned TLUD we generally see around 7g of CO and 400mg of PM during the WBT
compared to a carefully operated open fire at 55g CO and 2300mg PM. Generally
the TLUD makes less smoke at the finish with more air holes because all the
wood burns up without making smoke.
Isn't it great that a TLUD can be operated in both char making and no char
making modes?
The user can choose whether they want greater fuel efficiency or to make an
agricultural additive.
Best,
Dean
------------------------------------------------------------------------------
_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
Stoves mailing list
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://www.bioenergylists.org/
[email protected]
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
Stoves mailing list
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://www.bioenergylists.org/
[email protected]
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
