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<DIV>Yes, the canning and soup pots are larger than regular pots, significantly
larger than the circumference of the flame. No soot, however.</DIV>
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<DIV style="font-color: black"><B>From:</B> <A title=Home-NRG@dnaco.net
href="mailto:Home-NRG@dnaco.net">Bob klahn</A> </DIV>
<DIV><B>Sent:</B> Saturday, February 18, 2012 12:10 AM</DIV>
<DIV><B>To:</B> <A title=greenbuilding@lists.bioenergylists.org
href="mailto:greenbuilding@lists.bioenergylists.org">greenbuilding@lists.bioenergylists.org</A>
</DIV>
<DIV><B>Subject:</B> Re: [Greenbuilding] [BULK] Re: Question on tight
house,carbon monoxide</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">Sorry
to have restated the obvious. I just n<SMALL>oticed<SMALL>
</SMALL></SMALL>the thread - and started at the most recent
posting.<BR><BR>One other thought though, on part of the original problem (based
on an assumption - always risky, so I'll check).<BR>If the canning pot is larger
than your normal pots and pans (most seem to be), could the key to the high CO
production be that the flame is impinging on ( flaring out across) the bottom of
the pot? This will tend to reduce the combustion efficiency (in extremes
even soot up the pot bottom,educe combustion efficiency and increase the CO
production.<BR><BR>I'd expect the oven to be set to burn relatively efficiently,
so we don't hear of cooks keeling over, and produce less CO even when on for
longer times.<BR><BR>All speculation, but I bit my boot so deeply on the
last one, I had <BR>Bob Klahn<BR>
<BLOCKQUOTE cite=mid:F3F91B2015A445BD8053984DAB1036E9@BWHPW7G71150MT
type="cite">I actually watch them quite closely to keep them from boiling
over. The CO level goes way up before they do occasionally boil over, however,
definitely. The CO level goes up when the flames are burning properly blue.
<BR><BR>No way could I have the stove vented outside when the house was built
without huge additional cost--I had an expert builder and confirmed this at
the time. Thus the alternative, a vent with carbon filter. No, it is not
against code, at least not here, definitely. <BR><BR>-----Original
Message----- From: Corwyn <BR>Sent: Friday, February 17, 2012 12:19 PM <BR>To:
<A class=moz-txt-link-abbreviated
href="mailto:greenbuilding@lists.bioenergylists.org">greenbuilding@lists.bioenergylists.org</A>
<BR>Subject: Re: [Greenbuilding] Question on tight house, carbon monoxide
<BR><BR>On 2/17/2012 1:40 PM, KTOT (g) wrote: <BR>
<BLOCKQUOTE type="cite"><BR>Every time I make soup or jams (or other canning
which involves <BR>sterilizing then heat processing the jars in boiling
water), both of <BR>which involve boiling liquid for multiple hours, my
digital CO alarms <BR>read above the safe levels so I end up opening doors,
even on cold <BR>winter days and nights, to let the CO out. I do keep one
alarm near the <BR>kitchen, but the one in the bedroom also gets very high
readings. These <BR>are both brand-name, brand new CO alarms as well so I
trust them (plus <BR>once when I forgot to check them, a regular CO alarm
did go off in the <BR>same circumstances). <BR></BLOCKQUOTE><BR>My guess would
be that those things are boiling over a bit and adding a <BR>bit of liquid
water to the flames causing them to burn less efficiently. <BR>Do you
occasionally see yellow flames? I see the same thing when my <BR>sweetie
makes jam. <BR><BR>
<BLOCKQUOTE type="cite">I do run the exhaust fan, which is the kind that has
a filter but is not <BR>vented to the outside (due to the location of the
stove and fan). <BR></BLOCKQUOTE><BR>A vent fan not vented to the outside is
useless as regards CO or CO2. <BR><BR><BR>Note that CO is result of incomplete
burning, while CO2 is a result of <BR>complete burning. You do not want
too high a concentration of either. <BR><BR>I would recommend either a vent
fan which actually vents to the outside <BR>(note in my very lax jurisdiction,
what you have would be against the <BR>code), or an HRV or ERV with a boost
switch near the stove. <BR><BR>Thank You Kindly, <BR><BR>Corwyn
<BR><BR></BLOCKQUOTE><BR>
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