[Stoves] [Biochar] Embers from Three Stone as Biochar - Who has done this?

[Ronal Larson]

Lists;

	Five additions to yesterday's message re. Kevin’s work on HER = hot ember removal.

	a.   Another name possibility:  BC-HERS. - with added S for stove
		 I now prefer, even though we add a syllable,  and I liked “CHER"
		BC will remind of biochar much better than B
		HERS should better sell such stoves to main target audience for any improved stove
		Women (different meaning of “hers") can better claim the added soil benefits and income from char making

	b.  Six reasons why making char in a "3-stone” could be accepted more than TLUDs have been

		1.  Low first cost. (even zero cost in simplest form)
		2.  Not batch
		3.  Less time in fuel prep;  can use larger fuel sizes
		4.  Larger and smaller power levels are possible. 
		5.  One less stove to ’stack’
		6.  Can possibly design for multiple cook pots
		
	c.  Advantages of TLUDs that are lost;		

		1.  Better emissions - health	
		2.  Less time spent in tending fire
		3.  More char per unit cooking time. 
		4.  Higher Tier levels

	d.  Unknowns

		1.  Price and benefits.of replacing 3-stones with iron grate with added wind barriers and skirt - that might be justified by.working on all 4  TLUD advantages of topic c
		2.  Optimum designs for d1 - such as hot ember dropping into water?
		3.   Changes in fuel consumption per cooking task  (stove efficiency)
		4.    Quality of produced char -  Kevin’s two questions yesterday

	e.   Will respond to Crispin’s comments yesterday on claimed char-making measurement errors.

Thoughts on any of above?   Anyone able to give this a try?  Or cooperate with Kevin off-lists in design, construction and testing including in-field with urine (this is more than a stove project)?

Ron


> On Apr 1, 2021, at 10:21 PM, Ronal Larson <rongretlarson at comcast.net <mailto:rongretlarson at comcast.net>> wrote:
> 
> Two lists  and cc Kevin and  Hugh Mclaughlin
> 
> See inserts below.

	<snip>

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