[Stoves] [biochar-production] Continuous TLUD for cooking

Mon Feb 3 23:36:18 CST 2014

Dear Ronal, Nolbert and all,

I dont think there can be fixed priority order of the selling point, must
based on local demand. It happen to us in the small area we covered so far
in Vietnam that the reason to buy the stoves varies from area to area. 

An additional selling point that may not make a lot of sense but it did work
especially in sub urban area is that the stove is clean, tidy can be used
anywhere (outside the traditional kitchen for three stone stove) and looks
modern.

Batch aspect of TLUD: you still can always add more fuel, so it doesnt
matter much, just need to time the burning rate right to add at the right
time. From what I know, batch time varies based on fuel so it varies from
area to area and end users will learn it very fast from their own fuel.

By continuous running: what time range, cooking demand are we talking about
here? 

We all know TLUD is much better for health but sadly most users doesnt know
or care much about it as they've been cooking the old way for generation.
This would need a lot of supports to raise the issue to their attention.

Anh

From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of
Ronal W. Larson
Sent: 04 February, 2014 11:20 AM
To: Discussion of biomass
Cc: atbelonio at yahoo.com; Biochar-Policy; alangetsemail at gmail.com;
ahilliard at gmail.com; Ranyee Chiang; Jock Gill; Biochar-production;
jerry at whitfieldbiochar.com
Subject: Re: [Stoves] [biochar-production] Continuous TLUD for cooking

Nolbert and ccs

            Thanks for adding this list of four selling points for TLUDs.  A
few questions:

a.  Are they in priority order?  Might the order change for different types
of customers?  (say by income?)

b.  Any way of saying how much of each selling point is needed to move away
from a traditional stove?

c.  Does the batch aspect of TLUDs turn some/many of your customers off?

d.  Guessing the TLUDs won't handle all cooking, can you say for what tasks
they are using them (water boiling, etc)?

e.  At the recent Ethos meeting,  Michael Johnson of Berkeley Air Monitoring
talked about a new approach for encouraging, for health reasons looking at
daily maximum exposures, displacement of the dirtiest stoves with the
cleanest.  Any information you can pass on to GACC along those lines?

f.  Do you need and have subsidies to get greater adoption rates?

g.  Anything big I've missed?

To others - see https://www.facebook.com/awamubiomass.  Nolbert is working
with Paul Anderson.

Ron

On Feb 3, 2014, at 7:00 AM, Nolbert Muhumuza <muhumuza at gmail.com> wrote:

Hello Ronal,

Just to add; from experience the four selling points for TLUD stoves are;
1. Time and fuel saving (cook faster, with much less biomass)
2. Use a wide variety of biomass (this has issues with chopping wood
especially for rural Uganda)
3. Makes Charcoal that can be re-used in another charcoal stove or as
biochar
4. Clean (less smoke aka toxins - but they dont really understand emissions)

These are clear for potential users when we do a demo in villages.

Nolbert.

2014-01-29, Ronal W. Larson <rongretlarson at comcast.net>:

Antony  - with eleven ccs

          1.  First note nice help offered by Alan Cave in several messages
yesterday.   They did not include your original request below.

          I agree with his remark that the continuous Belonio stoves that
you found
at Paul Anderson's sites are down draft (BLDD) - and that may be the best
way to go.  At the recent ETHOS conference I do not recall this topic coming
up.  (I wrote 3-pager on that conference - available at the stoves site.)
The reason is the strong emphasis on stoves that cost $10-$20 - and I doubt
we can ever see continuous feed stoves in that price range.  I talked to Dr.
Belonio a good bit over the last weekend, but this topic did not come up.  I
include Alexis as a cc, as he is probably the best expert on this topic we
have.

          2.   I include the stoves list, because there is apt to be more
expertise
there on your stove question than on the Biochar-production list.  Tom Miles
added because he manages both lists and will have valuable thoughts.

          3.   I Include Jerry Whitfield, Jock Gill, Alex English, and Marc
Pare as
they have all written on continuous feed char-makers; but none I think for
stoves.  These are probably all horizontal feed (augers, moving grates,
etc.).   See http://www.whitfieldbiochar.com   (that is apparently in a
"hold" mode).  Apologies to anyone I inadvertently left out who has been
thinking of continuous-feed stoves.

          4.  I include Dean Still and Ranyee Chiang as the best way to get
this
topic into GACC discussions.

          5.  Can you explain more on why you are interested in this topic
for
stoves?  Do you have an upper price limit or particular stove application in
mind?  Would several low cost batch TLUDs operating sequentially in parallel
meet your needs?

          I consider the non-continuous aspect of TLUDs as their biggest
drawback -
so think we should all take this topic very seriously.  I thank you for
bringing it up.  In my mind, the other advantages of TLUDs (primarily time
savings and money-making) outweigh this disadvantage.  But it would be very
nice to remove this disadvantage whenever an application allows the extra
expense that seems sure to accompany continuous operation.

Ron

On Jan 28, 2014, at 4:43 PM, Anthill <ahilliard at gmail.com> wrote:

Hi biochar-production people. Google has failed me. Do you know if anyone
developed a biochar-generating stove that can run continuously?  Something
that:

- Produces water-quenched biochar
- Runs continuously on pellets/chips
- Unlikely to set fire to feed hopper
- Flame can be used for cooking

What I'm thinking of is something like:

http://imgur.com/a/BGADk

Google has showed me:

The BEK biochar generator
http://bekbiochar.pbworks.com/w/page/6465132/FrontPage
- Not for cooking

Wallace's biochar generator
http://terrapreta.bioenergylists.org/wallaceACpatent
- Not woodgas-running

Belonio's continuous rice husk generator
http://www.drtlud.com/2012/04/04/rice-husk-gasifier-new-papers/
- No quenchable biochar?

Any thoughts?

-Antony

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-- 
Nolbert Muhumuza

President & Chief Operations Officer
Awamu Biomass Energy Ltd.
P.O. Box 40127, Nakawa
Kampala - Uganda.

Mobile: +256-776-346724
Skype: nolbertm
www.awamu.ug <http://www.awamu.ug/> 

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