[Stoves] Stoves Digest, Vol 128, Issue 8
Ronal Larson
rongretlarson at comcast.net
Tue Apr 20 23:24:31 CDT 2021
Tony and list
1. I guess you are a new subscriber - and are not aware much of this list. At the list site it says (emphasis added):
" This site exists to help people develop better stoves for cooking with biomass fuels in developing regions.”
2. Googling found a Tony Blake with a wood-burning stove company in Australia. If you, I hope you will investigate an excellent biochar industry group (BIG) in Australia. You might be in a good position to add charcoal making - if you are that Blake.
See more below.
Secondary links
> On Apr 17, 2021, at 9:36 PM, Tony Blake <afbss at me.com <mailto:afbss at me.com>> wrote:
>
> If biochar is so magical why don’t we see truckload sized piles of it in paddocks along side truckload sized piles of superphosphate?
[rwl1. This list has a partner list called “io.biohar” where the “why" topic is regular.
And biochar industry growth is wonderful now (much better than char-making stove growth I think - but we know little on sales of either).
Biochar received its name only in 2007 (in Australia). I think we are doubling about every 2 yeers. I guess we’ll pass the superphosphate business in maybe 5 or 6 doublings.
> Biochar could cure COVID-19 I’m sure!
[rwl2: hmm.
> I watched the video. Some seem to draw a distinction between charcoal and biochar.
[rwl3; Charcoal might be burned. Biochar never. The beauty of the video for me was that the produced char was largely going into the soil - as biochar - it was not being burned. Why? - improved ag output.
> Also a cooking time of 35mins isn’t much yet the woman interviewed seemed to list a huge amount of food. Maybe it is each dish to each stove.
[rwl4: I’ve added one of the stove developers, Julien, to comment on 35 minutes, which number I don’t remember.
Kirk Harris (cc’d) has reported recently that his TLUD design has reached 2 hours I think (or was it 3 hours?). Kevin Mclean and I sre working on hybrid designs that can go much longer - and can make char three ways - one that is not batch.
> And the price? Really?
[rwl5: If you are the Australian stove manufacturer - I can understand your disbelief in the price (which I hope Julien can also comment on) . But in Bangladesh the Akha value is way more than the first cost associated with something just a little better than 3 stones. That stove makes economic sense. All Akha users can buy a much cheaper stove Buyers of char-making stoves are making an investment - not only a product - with payback times measured in months. (There are many such char-making stove companies.)
Kevin Mclean (cc’d), has a char-making unit he calls the Agwa (Ag waste) that sells for about $2.50. Still hard to sell when three stones are esentially free and not batch - limited.
TLUDS - char-making stoves - have much higher efficiency, much fewer pollutant outputs, and can make money while cooking (soil improvement and climate-related funding). That is why Julien’s and Kevn’s char-making stoves are leading the way to future cooking stove sales measured in the hundreds of millions per year.
Change takes time - to answer your first question. No connection to Covid.
Ron
>
> Regards,
> Tony Blake
>
> Sent from my iPhone
>
>> On 18 Apr 2021, at 3:09 am, stoves-request at lists.bioenergylists.org <mailto:stoves-request at lists.bioenergylists.org> wrote:
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>> 1. Recommending a video on the Akha stove and biochar (Ronal Larson)
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>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Fri, 16 Apr 2021 21:14:18 -0600
>> From: Ronal Larson <rongretlarson at comcast.net <mailto:rongretlarson at comcast.net>>
>> To: Discussion of biomass cooking stoves
>> <stoves at lists.bioenergylists.org <mailto:stoves at lists.bioenergylists.org>>, Julien Winter
>> <winter.julien at gmail.com <mailto:winter.julien at gmail.com>>
>> Subject: [Stoves] Recommending a video on the Akha stove and biochar
>> Message-ID: <D0935AEF-661E-411E-B7BC-C528B25C0659 at comcast.net <mailto:D0935AEF-661E-411E-B7BC-C528B25C0659 at comcast.net>>
>> Content-Type: text/plain; charset=us-ascii
>>
>> Julien anad list
>>
>> I bumped into a 2019 video on the Akha stove today that waa new to me. Longer and much more on biochar than several others - all with the same interviewer. This is to recommend it - at
>>
>> https://www.youtube.com/watch?v=ujqza-NDy4I <https://www.youtube.com/watch?v=ujqza-NDy4I>
>>
>> This version is 22 minutes long. - and good English subtitles. Has only 3% the viewership of a shorter version - that with no English.
>>
>> The main reason I like this version (besides having the translation0 - is the emphasis on biochar coming from the stove. This stove seems to be success because it produces biochar - and people are now valueing and using the biochar and income.
>>
>>
>> Questions for Julien (given credit in the video for its development),
>>
>> 1. There is a statement at a bit more than the 19 minute mark that charcoal (maybe biochar?) is imported from India at TK1200 / kg - which seems to be $14./ /kg. (That is $14k/tonne. Cheap compared to imports from Italy). Can you confirm - and I wonder the price per tonne at tonne scales - in Bangladesh. Was this statement in the video to show the monetary importance of biochar from cookstoves? Any idea what TK value the women might be receiving when selling char from the Akha?. There was one interviewee who was a quoted as apparently making big money.
>>
>> 2. There was a statement that the char-making efficiency was 15-20%. This seems low for TLUDs. Possibly because of the solidity of the design? I expect 25%.
>>
>> 3. The round small biomass (dung, leaves, chips) fuel balls look like an exceptionally good resource for any TLUD. Any idea of their price per kilo? A woman can produce how many kg per hour?
>>
>> 4. The poll at the end had plenty of positive reports - but 6 negative. Any idea why unhappiness for what I thought was excellent?
>>
>>
>> Anything more to report since you last reported to us?
>>
>> Any guidance to the rest of us on why the connection to biochar and money-making works so well in Bangladesh?
>>
>>
>> Ron
>>
>>
>>
>>
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>> End of Stoves Digest, Vol 128, Issue 8
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