[Stoves] TChar stoves can make and use charcoal was Re: A wisdom of Rebecca's stove

[Paul Anderson]

Stovers,

1.  Let's have Subject lines that tell what is being discussed, 
please.    (we are no longer discussing Rebecca's stove in these messages.)

2.  There are several documents about the TChar concept and 
implementation.   see     www.drtlud.com/tag/TChar

3.  Efficiencies are similar to each of the two stages of operation:
      A.   During the TLUD (migratory pyrolytic front) operation, the 
results for efficiency and emissions are much like for the Champion, 
Mwoto, and Quad TLUD stoves.   (see note below)
      B.   During the charcoal burning stage, the results are mainly 
like those of whatever charcoal stove is the base of the TChar combined 
unit.

4.  A serious difficulty with the TChar functional unit is the generally 
POOR ability of the charcoal stove to restrict the incoming primary 
air.  That means that the TLUD top is operating at HIGH-heat levels, and 
turn down is difficult.   BUT, when the charcoal is in the charcoal 
stoves in the second stage, that is generally a very nice LOW-heat.

Remember that TLUD stoves are mainly AIR controlled, so air leakages can 
be important.

TChar stoves should be a joint effort between those who make charcoal 
stoves and those who make TLUDs.

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

On 9/4/2013 12:49 PM, Lloyd Helferty wrote:
> Crispin,
>
>   Someone /does/ have "a [TLUD] stove that can use the fuel remaining" 
> -- but /also/ makes biochar.   It's called a "T-Char" stove:
>
>
>
> ... and it is up the "user" to decide whether to keep the char (for 
> the soil) or "burn it down to ash".
>
> I can't comment on the overall "Efficiency" of the device (or its 
> derivatives), however.
>
> Regards,
>    Lloyd Helferty, Engineering Technologist
>    Principal, Biochar Consulting (Canada)
>    www.biochar-consulting.ca
>    48 Suncrest Blvd, Thornhill, ON, Canada
>    905-707-8754
>    CELL: 647-886-8754
>       Skype: lloyd.helferty
>    Steering Committee coordinator
>    Canadian Biochar Initiative (CBI)
>    President, Co-founder & CBI Liaison, Biochar-Ontario
>    National Office, Canadian Carbon Farming Initiative (CCFI)
>    Come learn about biochar in October:
>      www.carbon-negative.us/symposium
>    Member of the Don Watershed Regeneration Council (DWRC)
>    Manager, Biochar Offsets Group:
>             http://www.linkedin.com/groups?home=&gid=2446475
>     Advisory Committee Member, IBI
>    http://www.linkedin.com/groups?gid=1404717
>    http://www.facebook.com/group.php?gid=42237506675
>    http://groups.google.com/group/biochar-ontario
>    http://www.meetup.com/biocharontario/
>    http://www.biocharontario.ca
>     www.biochar.ca
>
> "Technology is only a tool.  Sustainability is determined not by the the individual technologies, but rather how -- and even whether -- we decide to use them."
>     - Lloyd Helferty
> On 2013-09-04 12:27 AM, Crispin Pemberton-Pigott wrote:
>>
>> Dear Ron
>>
>> I am not sure why you use the word 'rebuttal'.
>>
>> >   a.  I am going to wait for release of the 72 slides from the EPA 
>> webinar to answer much of this
>>
>> I think that is a good idea.
>>
>> > - since I am mostly trying to defend the material there, which is at 
>> great odds with Crispin's approach (which I still do not understand)
>>
>> With respect to the issue of fuel remaining after a test, we are in 
>> agreement. The slides may explain it to your satisfaction.
>>
>> >   b.  I note that Crispin did not rebuttals one of my points,
>>
>> Rebut??
>>
>>  [RWL4:   In the first sentence, assuming that Crispin's  "cannot" 
>> includes "is not designed to", I would interchange the terms "under" 
>> and "over".  This is getting back to the issue of apples and oranges 
>> - where I believe there is some validity in adding them - if/when one 
>> is consciously attempting to maximize both, they are expressed in the 
>> same (energy) units, and are calculated with equivalent formulae.
>>
>> Both what? The apples are *stoves that can burn the remaining fuel*. 
>> The oranges are stoves that cannot.*If someone has a stove that can 
>> use the fuel remaining* and chooses not to, that is a feature of the 
>> user, not the stove and does not affect the rating given to the 
>> stove. We don't rate what people do.
>>
> <snip>

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