On Sunday 16 October 2011 05:03:12 Crispin Pemberton-Pigott wrote: > Water poured onto a large pile of hot charcoal can manufacture hydrogen > and the pile can explode. It is not common, but not unknown.
Which is a lot different from dunking the char into water. freshly made char is hygroscopic. it absorbs water vapour from the air and this is adsorbed on the char matrix, essentially condensing it from the vapour state to liquid, in so doing it releases all the latent heat into the pile and a hotspot can develop and ignite the pile. The release of hydrogen from sprinkling water onto char is s simple disassociating at low temperature? I don't recall Yury's post and I do read all he posts. From experience of putting out barbecues and the almost explosive generation of steam I would not advocate pouring small volumes of water onto hot char. Perhaps Alex will comment because I think his method of augering the hot char into water also utilised the water as an air seal to prevent air entering that part of the combustion chamber. AJH _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/
