[Stoves] Making testing equipment for CO and O2

[Dean Still]

Dear Paul,

Looking at CO is great but the more important health hazard is particulate
matter (PM). Nordica, Karl, and Damon, at the Aprovecho lab, are now
manufacturing a $2,000 device called the IAP meter that measures both CO and
PM. I hope that we can create a standardized Test Kitchen using the IAP
meter that helps stove designers to refine cooking stove prototypes using
both the Water Boiling Test (stove designer boils water, sees wood use,
emissions, etc) and the Controlled Cooking Test (local cooks make food, sees
wood use, emissions, etc). 

Nordica, Karl, and Damon also make a $10,000 hood system for labs that can
afford more accurate equipment.  

We hope to have a Test Kitchen plan soon.

All Best,

Dean



-----Original Message-----
From: stoves-bounces at listserv.repp.org
[mailto:stoves-bounces at listserv.repp.org] On Behalf Of Paul S. Anderson
Sent: Friday, February 01, 2008 1:34 PM
To: STOVES - Listserve
Subject: [Stoves] Making testing equipment for CO and O2

Stovers,   (especially Tami, Crispin, Charlie, and other emissions techies)

So nice to see many of you again at ETHOS!!!

I am still on the drive home, stuck in Rock Spring Wyoming with snow
blockage of
I-80!!!!!   We are fine and will eventually get home.

Can you help me and many others concerning emissions testing?  And maybe
make a
small business for yourself or someone?

We watched Crispin with his emissions sensor device.  Price tag of $3000.
Well,
two really main numbers would be for CO and O2 and then calculate the ratio,
which could be done with a calculator.  The device goes directly into the
flue
gases.

Can we get those numbers with simple devices?  Plural, because we do not
need to
get complicated unless someone has the money to put into this.

Must be actual numbers, not just a CO sensor that beeps when CO reaches a
certain level.  CO is NOT found in regular air, so to have the raw numbers
of
PPM or something would be useful.  THEN we look at the issue of dilution by
excess air.

Crispin illustrated to me about O2 measurement.  He measures the flue gases
and
finds out the amount of O2 as a percentage of the gases.  If the reading is
20.9%, that is the same as natural air.  If combustion is complete and no
excess air, the number is 0.0% (or close to that).

So, if I understand this, if CO is very very low (close to complete
combustion)
and the O2 is 10.5%, then there is 100% EXCESS air (half of O2 burned and
half
passing through).

Well, I am out of my league in these things.  I hope that someone can
explain it
better.  But most important is to tell me (and others) what device(s) to buy
or
make that will let the calculations be done.

Thanks in advance.

Paul


-- 
Paul S. Anderson, Ph.D., Geography professor - Emeritus
Telephone:  USA-309-452-7072 (residence and office)
Internet site:  www.ilstu.edu/~psanders
For my gasifier stoves info, go to:
http://bioenergylists.org/contributors#Paul_Anderson





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