[Stoves] energy lost in charcoal makinag and briquetting

[Paul S. Anderson]

Dear A.D. and all,

Congratulations with your charcoal making stove!!!  I prefer that name 
for your
stove instead of the T-LUD designation which is applied to devices that have
the more separated combustion of the gases in addition to being lit at 
the top.
As Dean's and your own comments have helped us understand, your stove is akin
to the charcoal making stove that Ron Larson showed to Dean and to you (and
probably elsewhere) which is without the distinctive upper can/cylinder and
secondary-air management for gases-combustion that is found in the Reed-Larson
1996 documented device.  I am glad that we are clearly distinguishing the
different technologies, noting their similarities and differences.

Dean commented on the "lazy, red flame" in his experiments with Larson-style
charcoal making stoves.  Words like lazy and weak are relative and somewhat
unjustly biased.  Such flames can be highly appropriate for some cooking.  So
maybe "flaccid" or "non-vigous" might be better terms.

Anyway, can you describe and comment upon the "vigor" or strength of 
your flame,
and if it is uniform for the duration of the burn?  And can the stove produce
stronger flames and even less-vigorous flames (that is, does it have much of a
turn-down ratio)?

When I was at ARTI in Phaltan for 5 weeks one year ago, we did not identify a
reliable supply of acceptable fuels similar to those you described, nor
encounter the willingness of many local people to be gathering the 
fuels as you
mentioned.  When you have those fuel supply issues well under control, 
that will
be a great benefit for any and all of the stoves that can utilize those fuels
well.

Paul
-- 
Paul S. Anderson, Ph.D., Geography professor - Emeritus
Telephone:  USA-309-452-7072 (residence and office)
Internet site:  www.ilstu.edu/~psanders
For my gasifier stoves info, go to:
http://bioenergylists.org/contributors#Paul_Anderson


Quoting adkarve <adkarve at pn2.vsnl.net.in>:

> Dear stovers,
> the charcoal making stove has solved the problem of energy lost during
> pyrolysis of biomass in the process of charcoal making and also of the
> energy lost during briquetting of the char. We use small pieces of wood in
> the charcoal making stove. The pyrolysis gas is used as cooking fuel and the
> charred pieces of wood that are left behind, are used as fuel in the Sarai
> cooker. Sarai cooker is a steam cooker, but it does not generate pressurised
> steam. It requires only 100 g charcoal to cook beans, rice, meat or
> vegetables for a family of five. It has become quite popular, and we have
> already sold about 30,000 of them. The charcoal making stove is not yet
> under mass production, but it would cost about US$12 when mass produced.
> Sarai cooker also costs about the same. If a family has these two devices,
> it would only require a couple of kg of wood pieces every day. This type of
> fuel is free of cost in the villages, because the villagers can use pieces
> of cotton stalks or pigeonpea stalks. In areas where they do not grow cotton
> or pigeonpea, they can cut brushwood growing on public lands or undergrowth
> in forest lands. A shrub called Lantana camara has assumed weedlike
> proportions in forests and the foresters are willing to allow people to cut
> it and take it away.
> I had already mentioned the fact that at current prices of wood and
> charcoal, by burning about Rs.2 worth of wood in the charcoal making stove,
> one gets Rs.3 worth of charcoal. So the more wood you consume, the more
> money you make.
> Yours
> A.D.Karve
>
>
> _______________________________________________
> Stoves mailing list
> Stoves at listserv.repp.org
> http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org
>



----------------------------------------------------------------
This message was sent using Illinois State University Webmail.