[Stoves] Heating unit or cooking stove INSIDE a home?

[Penny Vos]

Wow, I never realized. Thanks for explaining these
things.
Penny
--- IPC <ipcipc at mweb.co.za> wrote:

> Dear Tom
> 
> It's not a question of imposing US standards on the
> poor - it's a much
> deeper question than that.  We have measured CO
> concentrations inside homes
> of over 1500ppm. At that level, it raises major
> physiological questions
> about how people adapt to such levels (US EPA is
> 50ppm for 1h, and we are
> talking 8h+ exposure here).  Worse, it raises
> questions about brain
> development in infants growing under such
> conditions. You probably know that
> CO binds to the haemoglobin in blood, and therefore
> reduces the
> oxygen-carrying ability of the blood.  At 1500ppm
> CO, the oxygen levels in
> blood are something like you would experience at 20
> 000feet above sea level.
> 
> And, of course, because there is no control, you can
> exceed 1500ppm.  We
> haven't measured any, but we have observed the
> effects.  Tracking death
> notices in Soweto newspapers about 15 years ago, we
> saw an increase in the
> overnight deaths of whole families during winter. 
> There would typically be
> 3-4 families, all of whom perished in a single
> night, every week.  Their
> deaths would merely be recorded as "accidental" and
> lost among the data of
> 100's of other accidental deaths. The only
> reasonable explanation of a whole
> family dying in his way is asphyxiation.
> 
> So we can't treat CO lightly - it is a killer.
> 
> Hope that helps.
> 
> Philip Lloyd
> Energy Research Centre
> University of Cape Town
> Private Bag Rondebosch 7701
> South Africa
> Tel +27 (0)21 650 3896
> Fax +27 (0)21 650 2830
>  
> 
> 
> 
> 
> 
>   
> 
> -----Original Message-----
> From: stoves-bounces at listserv.repp.org
> [mailto:stoves-bounces at listserv.repp.org] On Behalf
> Of Thomas Reed
> Sent: 10 May 2008 04:15
> To: Discussion of biomass cooking stoves
> Subject: Re: [Stoves] Heating unit or cooking stove
> INSIDE a home?
> 
> Dear Andrew and all Stovers:
> 
> There is a win-win solution.   All indoor cooking
> should have at least a 
> natural draft hood to take the hot cooking gases,
> greases and any stove
> emissions etc. up and out. This kills two birds with
> one stone - stove
> emissions and cooking emissions. 
> 
> CO is very toxic particularly because it is
> odorless.  However, smokers
> regularly breath smoke containing > 20 ppm.
> 
> The current Occupational Safety and Health
> Administration (OSHA) permissible
> exposure limit (PEL) for carbon monoxide is 50 parts
> per million (ppm) parts
> of air (55 milligrams per cubic meter (mg/m(3))) as
> an 8-hour time-weighted
> average (TWA) concentration [29 CFR Table Z-1]. See
> 
>
*http://www.osha.gov/SLTC/healthguidelines/carbonmonoxide/recognition.html*
> 
> Too much worry about imposing US standards on people
> with no means to meet
> them imposes starvation on the poor. 
> 
> TOM REED        BEF
> 
> 
> andrew wrote:
> > On Thursday 08 May 2008 19:23, Paul S. Anderson
> wrote:
> >   
> >> Dick has asked about a cooking or heating stove
> INSIDE his residence.  
> >> If a cookstove was built from scratch or even
> altered from an 
> >> existing stove, would it even be allowed inside
> of an American 
> >> residence?  What about the safety checks and
> permits and insurance 
> >> questions?  These are serious restrictions!! 
> Anyone have specific 
> >> info on this??
> >>     
> >
> > I cannot help regarding American legal
> restrictions but am wary that 
> > discussion of specifics of American law is beyond
> the scope of this 
> > list.
> >
> > What would be relevant to cooking and heating
> stoves is what any such 
> > laws aim to do, with regard to safety of people
> using the sort of 
> > devices we discuss.
> >
> > The simple fact may be that less developed
> economies cannot yet afford 
> > the overhead of legislation, yet, but there's no
> reason we should not 
> > strive to provide them with the same levels of
> safety we assume for 
> > ourselves.
> >
> > AJH
> >
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