[Stoves] JED's breakthrough Re: Fuels of the future

Paul Anderson psanders at ilstu.edu
Wed Sep 9 08:28:18 MDT 2015


AD,

There are two sides to this discussion, and they are distinct but also 
compatible.   SPECIFIC biomass fuels that are easily available and 
abundant can merit a stove specifically for that fuel.   1K, 10 K or 
100K stoves with a specific fuel represent progress.

The comments about GENERALIZED biomass fuels are also important, but the 
variations can become too different for the stoves to be able to use so 
many of them.   Stoves need to match the fuels.

One of the important aspects of JED's stove is that it does work well 
with one abundant low-cost biomass refuse.   If it eventually is shown 
to work with additional variations of biomass, that is good.   But what 
is important is that it works well with at least ONE.

The late great Paal Wendelbo always said:  "Start with the fuels" when 
designing a stove.

Paul

Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
Email:  psanders at ilstu.edu
Skype: paultlud      Phone: +1-309-452-7072
Website:  www.drtlud.com

On 9/8/2015 10:50 PM, Anand Karve wrote:
> Dear stovers.
>
> Shells of any particular species of nut are not available everywhere.
> Agricultural waste is, on the other hand, universally available, and
> it represents a huge source of energy. India produces annually about
> 800 million tons of it, having almost 2.5 to 3 times the energy of the
> petroleum used in the country. Just in our own State of Maharashtra,
> there exist 150 enterprises, which buy agricultural waste from farmers
> to convert it into fuel briquettes. Since the farmers get money for
> their agricultural waste, they transport it at their own cost to the
> site of the briquetting enterprise. The briquettes are used mainly as
> boiler fuel but our own group is working on using these briquettes as
> fuel in domestic cooking.
>
> Yours
>
> A.D.Karve
> ***
> Dr. A.D. Karve
>
> Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)
>
> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
>
>
> On Tue, Sep 8, 2015 at 6:29 AM, Paul Anderson <psanders at ilstu.edu> wrote:
>> JED,
>>
>> Truly awesome!!!!!!!!!    [Based on very little information, but he tells us
>> truly important info about fuel and boiling time and combustion technology.
>> This truly looks promising.]
>>
>> I suspect that you are on the verge of a major shift in cooking stoves.
>> Your attachment with photos in your original message should be seen by all.
>> It will be soon placed on the    www.drtlud.com   website.
>>
>> What I am reading and interpreting is this:
>>
>> 1.  Abundant supply of a fuel that is appropriate in size, energy content,
>> moisture, etc.   Literally an agricultural "refuse" for free or for the cost
>> of transport.   Producers will start selling it, but it is already UNDER the
>> price of other fuels, so the price will only rise to the level that the
>> market will bear.
>>
>> 2.  A CERAMIC / MUD / CLAY stove, made by a master of clay stoves.   We
>> would like to know the cost of the stove.   And how easily can it be made ?
>> Importance of clay is in next item.    And it should be able to handle
>> numerous other appropriate biomass fuels, but doing just one (pili nut
>> shells) is sufficient for starting and establishing what can be
>> accomplished.
>>
>> 3.  You operate in TLUD mode (correctly characterized by the downward
>> migratory pyrolytic fron MPF).   And then you continue to burn the created
>> char while adding (please explain where and how) additional fuel.   The
>> result is the high heat in the char-bed, but without the metal parts that
>> are damaged by high heat.   Ceramics to the rescue!!!!   Continuous burning.
>>
>> 4.  Plus you are demonstrating the making of light.   Very nice.
>>
>> Best wishes.   Please tell us more.    And about the important issues of
>> user acceptance.   Many of us are willing to be of assistance.   In some
>> ways you are only scratching the surface of what you are demonstrating.
>> Congratulations.
>>
>> And are you going to the GACC Forum in Ghana in November 10 - 13?
>>
>> Paul
>>
>> Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
>> Email:  psanders at ilstu.edu
>> Skype: paultlud      Phone: +1-309-452-7072
>> Website:  www.drtlud.com
>>
>> On 9/7/2015 4:59 PM, Joshua Guinto wrote:
>>
>> Dear Crispin, Paul and everyone
>>
>> Let me jump into the conversation.Â
>>
>> I am now in the midst of the gasifier stove i am fabricating and the
>> abundant supply of pili shells. Pili (canarium ovatum) is an endemic
>> species of my place here at the Bicol Region which is south of Manila. The
>> shells  are very much heavier than macadamia nuts and has a density of 0.87
>> grams/cm3. .Â
>>
>> Two days ago we began hauling 4 tons of the shells to become my stocks of
>> fuel. I will sell the shells along with my PapaBrick Stove. And then, while
>> we are hauling the shells, we were offered another 6 tons of shells from the
>> neighbor farm, both in the same village. I used to purchase the shells from
>> another village where to my best estimate, there is more than 10 tons per
>> month that are very much underused. This supply is expected to increase as
>> more farms have planted thousands of pili trees as the farmers got more
>> awareness with the use of the shell for gasifier stoves.Â
>>
>> On the other hand, the PapaBrick Stove is giving us satisfying performance,
>> now that we know better how to use it can perform as a TLUD gasifier stove
>> during the cold start phase and then work as a rocket during the hot start
>> phase in a continuous mode.Â
>>
>> One load receives 1.25 kg of the shells and runs for 75 minutes of very
>> clean flame, boils 4 liter of water in 14 minutes during the cold start
>> phase and then 9 minutes during the hot start phase.Â
>>
>> After the flame has gone out, we can harvest an average of 2.73 grams of
>> char from the raw fuel of 1.25 kg or about 21 % recovery.
>>
>> Going further i fabricated a lantern on top of the stove. And it was very
>> satisfying.Â
>>
>>
>> Regards
>>
>> JEdÂ
>>
>> Joshua B. Guinto
>> Specialist, Appropriate Technology
>> MSc Management of AgroEcological Knowledge and Social Change (MAKS)
>> Wageningen University, The Netherlands 2006 to 2008
>> Recipient, International Fellowships Programme  Award (IFP) 2005
>> Ford Foundation
>>
>>
>> 2015-09-03 20:31 GMT-07:00 Paul Anderson <psanders at ilstu.edu>:
>>> Crispin and all,
>>>
>>> Do you know of any location that has these shells and has access to TLUD
>>> gasifiers?   The combination of these shells and TLUDs has great
>>> potential, but only if someone somewhere puts the two together in a serious
>>> project or venture.  I would be interested in having contact with people in
>>> such situations.
>>>
>>> Paul
>>>
>>> Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
>>> Email:  psanders at ilstu.edu
>>> Skype: paultlud      Phone: +1-309-452-7072
>>> Website:  www.drtlud.com
>>>
>>> On 9/2/2015 6:01 PM, Crispin Pemberton-Pigott wrote:
>>>
>>> Dear Friends
>>>
>>> Her are two fuels that are abundant (in places) and really interesting to
>>> work with. Both can be charcoaled and both are really strong.
>>>
>>> Oil Palm Kernel Shells
>>>
>>>
>>> And
>>>
>>>
>>> Candle nut shells.
>>>
>>>
>>> The price is something like $70 per ton. Moisture is low and energy ins in
>>> the 18-19 MJ/kg range.  The can be burned in a TLUD to make charcoal, and
>>> the charcoal is strong enough to sell in sacks.
>>>
>>>
>>> The interesting about these fuels is they are not just available in many
>>> thousands of tons, they pack quite well so a packed bed gasifier is a pretty
>>> good burner.
>>>
>>>
>>> For crossdraft and downdraft enthusiasts, they can also be used in hoppers
>>> burning something and intermediate coal.
>>>
>>>
>>> Regards
>>>
>>> Crispin
>>>
>>>
>>>
>>>
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