Dear Dan Another clue is that pinkish flames often indicate burning hydrogen which makes water which gives off that colour when really hot.
A long, dark orange flame often indicates burning oils/hydrocarbons. Regards Crispin -----Original Message----- In a message dated 12/2/2010 9:46:16 A.M. Eastern Standard Time, [email protected] writes: DD Dan Dimiduk comments Many stoves that appear to be burning with low smoke have too small a region above the primary combustion for the flame to finish burning properly. It is typically the chilling of the half-finished burn that looks clean but is high in CO. If the gas flame from charcoal of a gasifier does not have at least 50mm (usually 100 is needed) for flame space, it will not complete the burn and have high CO. By flame space I mean the distance from the beginning of the flame and the bottom of the pot or heat exchanger. If you see flames running along the bottom of a pot, or exiting into the air, you will know it has high CO. Regards Crispin DD I like this paragraph Crispin, because it gives us something to look for. Even though the comparison may change with the stove design, the visualization of the reaction is what is important. Clean CO burns almost clear but has a different bluish tint than Hydrogen. Watch the flames over a burning charcoal bed. Generally in a woodstove you will see the yellow hydrocarbon flames masking the less visible flames. Dan Dimiduk _______________________________________________ The Stoves list has moved to [email protected] - please update your email contacts to reflect the change. Please visit BioEnergy Discussion Lists http://info.bioenergylists.org/ Thank you, Stoves Administrator http://stoves.bioenergylists.org http://info.bioenergylists.org UNSUBSCRIBE HERE; http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org
