[Stoves] combustion of char

[Crispin Pemberton-Pigott]

Dear Alex

Would you please put a thermocouple into one of the dry quenching drums somewhere in the middle and log the temperature for a couple of days?  If you caught the ambient temp at the same time we could plot the difference. 

When I logger Hoffmann kilns in Maputo I was quite surprise how easily we could see the diurnal temperature overlaid on the kiln temperature. I expect the same with your drums. 

By subtracting the two we might be able to pick up a drop-rise-drop like the ones in the graphs in the first paper you cited. 

Another possibility is to collect temps from the periphery of the drum and the centre, then ditto for the bags. At some point either O2 or H2O will have access to the char. 

Regards from frozen Waterloo (this is getting boring)
Crispin
-----Original Message-----
From: Alex English <english at kingston.net>
Sender: "Stoves" <stoves-bounces at lists.bioenergylists.org>
Date: Sun, 24 Feb 2013 09:24:51 
To: Discussion of biomass cooking stoves<stoves at lists.bioenergylists.org>; <biochar at yahoogroups.com>
Reply-To: Discussion of biomass cooking stoves
	<stoves at lists.bioenergylists.org>
Subject: Re: [Stoves] combustion of char

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