[Stoves] energy lost in charcoal makinag and briquetting

[adkarve]

Dear Paul,
the fuel in our charcoal making stove is ignited from the top, but the stove
is so designed, that one can also feed additional pieces of wood, while it
is in use. The present model does not allow any control over the fire
intensity, but it is possible to do so with certain additions and
alterations to the stove. We are working on it. We are aware of the fact
that we have to ensure a steady supply of fuel before we launch this stove.
The entire concept is new, and we shall have to orgtanise the complete chain
involving fuel production, supply of fuel to users, collection of charcoal
from the users and selling of charcoal.
Yours
A.D.Karve
----- Original Message -----
From: Paul S. Anderson <psanders at ilstu.edu>
To: <stoves at listserv.repp.org>
Sent: Friday, November 03, 2006 10:34 AM
Subject: Re: [Stoves] energy lost in charcoal makinag and briquetting


> 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
> >
> >
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> >
>
>
>
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