Dear Crispin; Thanks for your excellent response to the issue of untrafine particles and the article by Just, Rogak and Kandlikar (2013). That TLUDs have a strong secondary gas fire is a very important distinction from many other stove designs. The ability of a stove to handle a variety of fuel qualities is also an issue, because, as we all know, the rate of heat production and the temperature of the flaming pyrolysis affects the nature and temperature of gases entering the secondary gas fire. We may find that in area of high human population density, pellet fuels are way-and-above the best option for low-emissions of particulate matter. Hopefully, there can be a market for biochar to offset the cost of pellets. That were soil scientists (me) come in.
Speaking of pollution being relative, my parents lived in London, England during 1930-1950. A lot of coal was burned for heating and cooking. The particle emissions produced nuclei for water vapor to condense resulting in the infamous London fog. It was at times so dense that bus conductors had to get off the bus and walk in front to show drivers the way. The people of London simply assumed that it was normal that your window curtains and the white marble of buildings turned back. When Londoners switched to using more gas and electricity, the famous fog went away. Julien. -- Julien Winter Cobourg, ON, CANADA _______________________________________________ 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://stoves.bioenergylists.org/
