[Stoves] Congratulations

[Dean Still]

Dear Omar, Dr. Karve, and Peter,

Congratulations on receiving Ashden Awards! The answers that you create are
important and valuable. 

Best,

Dean

-----Original Message-----
From: stoves-bounces at listserv.repp.org
[mailto:stoves-bounces at listserv.repp.org] On Behalf Of Dean Still
Sent: Saturday, June 17, 2006 7:25 AM
To: 'Stoves'
Subject: RE: [Stoves] RE: ppm of CO and mass flow 

Dear Crispin and Paul,

Nordica and Damon spent hundreds of volunteer hours creating the PEMS that
folks saw at ETHOS. We hope to have the portable emissions monitoring system
for sale at ETHOS '07 for around $3,000. It gives similar results compared
to the plus $20,000 system we use in the Aprovecho lab. 

The reason that they developed the cheaper hood was to give folks the
ability to see what stoves are doing in real time. We have found it
essential for investigating stoves.

All Best,

Dean

-----Original Message-----
From: stoves-bounces at listserv.repp.org
[mailto:stoves-bounces at listserv.repp.org] On Behalf Of Crispin at newdawn.sz
Sent: Friday, June 16, 2006 1:40 PM
To: Stoves
Subject: [Stoves] RE: ppm of CO and mass flow (was: Central
channelcombustionstoves

Dear Paul

I really think that it is pointless to use a CO ppm reading to assume 
something about  a series of burns unless you have a stove like a paraffin 
burner of LPG where there is some expectation of a consistent burn.

With wood there is simply no way to easily or even reasonably know that two 
fires are giving a similar temperature in the flue and similar excess air 
and so on.  Even the EA varies continuously.  A rough indication?  OK but 
not for tweaking designs.

CO ppm is valuable when measuring the CO in a room in which people are 
breathing the air.

Regards
Crispin

----- Original Message ----- 
From: <psanders at ilstu.edu>
Sent: Friday, June 16, 2006 3:49 PM
Subject: [Stoves] ppm of CO and mass flow (was: Central channel 
combustionstoves


Tom,

Your explanation has cleared up the questions.  You have explained very well
what Crispin has consistantly and correctly raised as an issue, which is 
that
just knowing the ppm of CO has limited meaning unless:

1.  you also know the mass flow of the stack gas, or
[snip]



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