Dear Andrew I agree re pipe walls - they definitely run cooler with a vortex. You mention the region of higher EA. Is that at the centre or the periphery?
It is worth sampling them separately before the heat exchanger mixes everything - something we did not do. Thanks Crispin -----Original Message----- From: andrew heggie <[email protected]> Sender: [email protected] Date: Sun, 29 Aug 2010 10:38:49 To: Discussion of biomass cooking stoves<[email protected]> Reply-To: Discussion of biomass cooking stoves <[email protected]> Subject: Re: [Stoves] Fire in a vortex On Saturday 28 August 2010 23:35:33 Crispin Pemberton-Pigott wrote: > Creating such a vortex allows the use of materials that do not need to > be able to survive high temperatures (like metals). Even metals survive well because the centrifuge throws denser, cooler, gases to the outside keeping the core hot and the walls cool. It seems to lead to some segregation of incoming air such that dilution air ends up as a high excess air value. I say this only from observation of experiments where I have measured excess air in the flue with low (30ppm) CO levels where I expected lower excess air measurements for a pre mixed flame. AJH _______________________________________________ Stoves mailing list [email protected] http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org http://stoves.bioenergylists.org http://info.bioenergylists.org _______________________________________________________ Unlimited Disk, Data Transfer, PHP/MySQL Domain Hosting http://www.doteasy.com _______________________________________________ Stoves mailing list [email protected] http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org http://stoves.bioenergylists.org http://info.bioenergylists.org
