[Stoves] News: National Geographic on promotion of gas stoves over improved woodstoves - in Guatemala

[Xavier Brandao]

Dear Andrew,

I never said you were advocating continued use of the WBT, please read my last post and Ron's last post.
Ron said you were likely.
Since I was not sharing the same opinion than him, I just repeated what Ron said, then just asked you and others if you could clarify.
Which you just did, so thank you very very much for that. That is helpful.

Best,

Xavier


-----Message d'origine-----
De : Stoves [mailto:stoves-bounces at lists.bioenergylists.org] De la part de Andrew Heggie
Envoyé : samedi 2 septembre 2017 11:17
À : Discussion of biomass cooking stoves
Objet : Re: [Stoves] News: National Geographic on promotion of gas stoves over improved woodstoves - in Guatemala

On 2 September 2017 at 01:21, Xavier Brandao <xav.brandao at gmail.com> wrote:

> You listed the experts that are, according to you, currently, as of 
> now September 2017, still advocating continued use of the WBT:
>
> ·         Jim Jetter
>
> ·         Ranyee Chiang
>
> ·         John Mitchell
>
> ·         Tami Bond
>
> ·         Michael Johnson
>
> ·         Kirk Smith
>
> ·         Tom Miles
>
> ·         Andrew Heggie
>
> ·         Dean Still


Xavier I don't know if I missed something in earlier posts or the attribution is mixed up but just to clarify a point:

I have never used the formal WBT or it's associated spreadsheet, I simply do not have the facilities for proper scientific measurements nor the expertise to implement them. I did use simple  water boiling to compare my various TLUD experiments in the early days coupled with basic before and after weighing on domestic scales for comparisons of moisture contents and yields of char.

As such I neither approve nor disapprove of the WBT I am simply not involved enough with testing to make a judgement but appreciate the many concerns expressed about using it especially about its precision.

I have no concerns either way that it apparently shows TLUD cook stoves in a favourable light as the co production of char puts these stoves in a class of their own and it will be users who decide if char production is worthwhile. Their benefits as cookstoves are mainly to do with low particulates in the exhaust gases.

Andrew

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