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From ventfory at IAFRICA.COM Thu Jan 20 09:06:24 1994
From: ventfory at IAFRICA.COM (Kobus)
Date: Tue Aug 10 18:30:49 2004
Subject: Feedback - briquette gasifier stove - Kobus
Message-ID: <THU.20.JAN.1994.160624.0200.VENTFORY@IAFRICA.COM>
Crispin,
Sorry for not replying to your message of 22 December 2003
Subject: Re: [STOVES] ] Feedback - briquette gasifier stove - Kobus
I have been away and only saw it now.
>Can you switch that logger back and forth between CO and CO2 levels to
> get a ratio?
No. I believe Andrew Heggie gave a really useful reply to this on the same
day.
I ordered the HOBO, like many others due to its affordability so it is very
basic (plastic), and not as robust or versatile as others on the market, not
really designed to be hand held, but gives accurate and useful feedback on
periods of incomplete combustion.
> I have been reading the SABS test report on the wick-type paraffin stove
> and it is pretty horrific. The CO/CO2 ratio is 75:1000 once it gets
> going (worse before that).
Not a great fan of paraffin stoves, but as you know paraffin is preferred
due to its high heating value and low cost and to top it the appliances are
very affordable. We can however challenge its popularity head on by
introducing cleaner burning appliances, that are more durable, safer to use
and more fuel efficient. Come to think of it your VESTO is successfully
doing just that.
Regards
Kobus
> Dear Kobus
>
> Thanks for your report on the emissions. I wish I had at least one of
> your pieces of testing hardware!
>
> A couple of things come to mind:
>
> Have you any way to get a CO:CO2 ratio figure? We are supposed to reach
> 1:50 to meet the SABS standard.
>
> Something else is that I hope you get a chance to burn one or both of
> the briquette sizes in a standard Vesto and tell me how it goes. It
> will char the briquettes first and then (if you open the air) burn the
> char pretty well. With a hot stove and very little (remnant) charcoal
> our normal advice is to lift the stove body off its base to allow free
> air flow to the last little bit or else there is a CO spike at the end
> of the burn.
>
> I have been reading the SABS test report on the wick-type paraffin stove
> and it is pretty horrific. The CO/CO2 ratio is 75:1000 once it gets
> going (worse before that).
>
> Can you switch that logger back and forth between CO and CO2 levels to
> get a ratio?
>
> Happy Winter Solstice!
> Crispin in Whitby Ontario for a change = cold!