[Stoves] Charcoal Rocket

[Dean Still]

Dear Kevin,

Didn't see the rest of your message.

The photos are of the same stove used in the video.

We have run the stove 4 times under the emissions hood. Each time the CO
eventually goes down to under 10ppm. I guess that this happens when the
temperature gets up high enough in the chimney above the burning charcoal?
The rate of burn changes depending, I think, on whether the top of the pile
lights or whether, as in the video, the entire pile lights at the same time.

Best,

Dean

-----Original Message-----
From: stoves-bounces at listserv.repp.org
[mailto:stoves-bounces at listserv.repp.org] On Behalf Of Kevin Chisholm
Sent: Wednesday, June 21, 2006 7:45 PM
To: Tom Miles; STOVES at LISTSERV.REPP.ORG
Cc: 'ethos'
Subject: Re: [Stoves] (no subject)

Dear Tom
----- Original Message ----- 
From: "Tom Miles" <tmiles at trmiles.com>
To: <STOVES at LISTSERV.REPP.ORG>
Cc: "'ethos'" <ethos at vrac.iastate.edu>
Sent: Wednesday, June 21, 2006 5:39 PM
Subject: [Stoves] (no subject)


> Video: Charcoal burning Rocket stove reduces CO emissions
> http://www.aprovecho.net/stoves/web-content/media/charcoal/charcoal.html
> Jeremy Roth, Dean Still, Nordica MacCarty, Aprovecho Research Center June
> 2006

The chimney used in the Video is hardly a "Rocket Stove"... it is simply a 
chimney above a charcoal bed.
>
> Watch and listen as Dean Still demonstrates how adding a short insulated
> chimney to the combustion chamber of a charcoal burning stove can
> significantly reduce carbon monoxide emissions.

Dean shows the CO going from 8 to 1800 to 8 ppm CO in the video, but he 
doesn't give any indication of what the performance would be without a 
stack. There is no basis in this Video for claiming that the stack reduces 
the CO.
>
> Also linked from www.bioenergylists.org
>
> See stove construction and test data at:
> http://bioenergylists.org/en/charcoalcoemissions

The data shown on the Video does not match with the data shown at this site.

> and http://bioenergylists.org/en/improvedcharcoal
>
Construction details at this site don't match the appearance of the 
insulated stack shown in the video.

Am I missing something?

Kevin
>
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