Dear Lloyd I confirm what Paal says regarding the 'strong' ash from some fuels. It can be a big advantage in certain (not all) circumstances. If it does not consolidate it allows a generous amount of air through to burn the char. If this air supply fails, the char will smoulder, the CO flame will go out and the CO goes through the roof.
"The advantage by using grass as fuel into a TLUD is the simmering effect caused by the fact the glowing mass, after the flame is over, doesn't collapse like wood fuel and by that it will be giving good simmering temperature close under the pot for quite a long time." In other applications like a hopper feed, it is best to have an ash with nearly no strength at all, like Nalaikh coal here in Ulaanbaatar. It turns to a drifting powder - absolutely wonderful at getting out of the way. We can run a hopper-fed fire for 6 hours and not have to shake the grate at all in spite of the very high combustion temperature (which is isolated from the ash by design). Regards Crispin _______________________________________________ Stoves mailing list [email protected] http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org http://stoves.bioenergylists.org http://info.bioenergylists.org UNSUBSCRIBE HERE; http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org
