Dear Ron
[RWL1: Can you give cites (or better attach the papers?)
I think I have to find the direct links but in the meantime I can attach one.
Taffy is bringing out another about now. 2010-02-02 V3 Heterogeneous testing
Robinson Makonese Pemberton-Pigott and Annegarn.
>Late last year we trained 20 people from 7 universities in Africa how to
>conduct basic tests and how to use the spreadsheet. They are being provided
>some test equipment including a hood.
[RWL2: Fantastic. Who is paying for this really important addition?]
That was funded by PRoBEC.
>…It looked like a good burn but the CO level was quite high and the designer
>could not go further without emissions testing. Using only the controllers
>provided for primary and secondary air, it was possible to reduce the CO/CO to
>0.5%.
[RWL3: Sounds like either TLUD or BLDD?]
Side draft.
>…We then constructed a slightly modified combustion area which produced a best
>figure of an additional order of magnitude reduction to 0.02%.
[RWL: I would have no idea how to make this big a difference with only
"slightly modified". Can you say a bit more?
Actually that was discussed in detail – the messages about the depth of the
fuel bed. The depth was increased by 10mm from 75 to 85. The air supply was
more than cut in half and the secondary air nearly eliminated. That should
confuse the biomass burners! J
>In other cases we have located good potential in stoves that looked average or
>‘bad’ using this approach.
[RWL: Same question - what sort of changes? ]
I was referring to locating performance issues that are detected by running the
stove at various powers and with various pots and operating procedures.
Regards
Crispin
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