[Stoves] Advancement of "better" stoves

[Crispin Pemberton-Pigott]

Dear Jock

 

Thank you for point out that cherry picking a few items from the whole data
is not a valid way of looking at the problem. The stoves and fuel are
consumed in a matrix of economic and social circumstances. 

 

Funding or subsidies has a tendency to skew rational decision processes by
focussing on particular aspects of a technology or crop (for example maize
production for biofuels has an impact on food prices).

 

I thank you for keeping this at the forefront. 

 

Regards

Crispin

 

 

Crispin,

 

On May 29, 2013, at 5:32 AM, Crispin Pemberton-Pigott
<crispinpigott at gmail.com <mailto:crispinpigott at gmail.com> > wrote:





 The viability of cooking while making char pivots on two things: the
conversion of fuel to char without increasing the raw fuel demand, and the
rate of positive return on char placed in the soil. The data that addresses
these issues is of great interest to me.

 

Holding back carbon from combustion will increase the feedstock demand.
This is a non issue if the feedstock is free, or, even better, a waste
stream with a disposal cost that can now be avoided.  Of course an  increase
in garden productivity, or a sufficient market value for the charcoal,
could eliminate any extra cost even if the feedstock has to be purchased.
And all this with no credit for sequestering carbon.

 

In sum, the entire value chain has to be taken into account, not simply a
few cherry picked data points such as the increase in feedstock required.

 

Regards,

 

Jock

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