[Stoves] Testing Results of the Ecocina Cooking Stove from El Salvador

[Crispin Pemberton-Pigott]

Dear Friends at Aprovecho

My compliments on the development of the Ecocina stove and I like the
reporting layout. It was easy to understand.

Looking at
http://www.bioenergylists.org/files/Ecocina%20testing%20report_3.5.08.pdf I
was wondering if the hood shown on page 2 (which I think is the portable
hood you showed at ETHOS) has a fan that draws all the stove emissions into
the hood plus a bit more?

If it does, and there is air from the room entering the hood, how do you
separate the dilution factor for the stove itself, from the dilution by air
in the room which enters the hood as the gasses are swept into the
detectors?

I can understand how you calculate the dilution factor in total, by looking
at the O2 level, calculating the excess air (in the hood) and adding 1.0 to
get Lambda (total air).  But I don't see how you get the excess air ratio
for the stove itself while doing this.

Also I wanted to confirm that the CO production is 1.46 gm per MJ which I
calculated from the numbers in the chart (average energy used and CO
produced). I presume the energy content is corrected as per the present
agreed methods (up to ETHOS date, for example).  It often mentions the 2003
version of the test but it is not clear if the moisture correction method
was the new one.

Because there are a few variations of the 2003 test could you please point
us to the Excel file presently in use?

Many thanks
Crispin