[Stoves] Definition of char-making appliance

[rongretlarson at comcast.net]

Crispin, list etal: 

The number 15 % could be useful. I can't think of a better number, if we need this, since 15% is easy to achieve. 

But I sense a desire to not call this a "stove" - which your "apparatus" certainly could be, in my opinion.. 

I would make NO or LITTLE distinctions in the way 4.2.2 tests are performed and reported for char production above or below 15%. If you think the testing should be performed differently above 15%, I can agree (don't stop the testing of a self-declared "charcoal-producing stove" after achieving the first boil. I think Jim J has already implemented that difference). But I can't see any reason for reporting anything differently. 

Another little complexity - Is there a societal benefit in testing and reporting a Phillips or Oorja stove both ways? Both of these stoves are TLUD in their first part of a typical cooking cycle. This also refers to Paul A's comment today about reporting emissions for the two parts separately. I personally think there is such a societal benefit - but perhaps the stove developer could ask that the more complete testing not be done, I suppose. 

Ron 





----- Original Message -----
From: "Crispin Pemberton-Pigott" <crispinpigott at gmail.com> 
To: "Discussion of biomass cooking stoves" <stoves at lists.bioenergylists.org> 
Sent: Monday, May 6, 2013 9:06:59 AM 
Subject: [Stoves] Definition of char-making appliance 




Dear Char Producers 



What is your opinion of this definition of a ‘char making appliance’? 



Char Making Appliance 

Any appliance that derives heat largely from the pyrolysis of biomass in a manner designed to produce, as a result of such combustion, a carbonaceous byproduct high in carbon, useful as a fuel or as a ‘biochar’ and where such product contains not less than 15% of the carbon in the original fuel. 



If you have a suggestion for an alternative % of carbon, or wish to propose a mass-based metric, please provide a supporting case. 



Thanks 
Crispin 




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