[Stoves] Understanding "charcoal making" stoves. Was: energy lost in charcoal making and briquetting

[Kevin Chisholm]

Dear Steve
----- Original Message ----- 
From: "Steve Taylor" <Steve at thetaylorfamily.org.uk>
To: "Discussion of biomass cooking stoves" <stoves at listserv.repp.org>
Sent: Monday, November 06, 2006 5:59 PM
Subject: Re: [Stoves] Understanding "charcoal making" stoves. Was: energy 
lost in charcoal making and briquetting


> Kevin Chisholm wrote:
>> OK... consider a device that produced a "burnable gas".... in contrast to 
>> a
>> device that produced "a burned gas that could not be ignited."
>>
>> Would not the former be a "gasifier" and the latter a "stove"?
>>
> Lets try this for a fundamental descriptor of a stove:
>
> Stove, a high temperature retort wherein pyrolytic reduction of organic
> materials takes place.

Tom Miles, AJH, Wikipedia, and answers.com all define a stove as "A heating 
device....." What you seem to be defining is a device from the pyrolysis of 
organic materials, without heat output being significant.

If we employ the Stove or Gasifier Litmus Test, there is no requirement for 
secondary air in the device as you describe it.

I would suggest that the above definition is a good definition of a 
gasifier.

Best wishes,

Kevin
>
>
>
> Steve
>
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