Greetings Jim, and list members.
Jim, if you want a better fan, (and cheaper), simply make 2 disks (one mounts on the shaft, the other has the larger hole for the inlet.) then use strips of heavy tin (or light gauge metal) and form them into a Z shape (well, an L with a dog leg the other end, and the opposite way, somewhat like a "90 degree Z") take these and pop rivet with STEEL rivets (NOT aluminum ones) so they are sandwiched between the two disks in a radial fashion (like your welded version on your site, BUT with the extra disk on the inlet side of things. the extra disk should run as close as it can to the outer housing the Bernoulli principal will help stabilize the outer disk, and the outer disk will add about 25% more suction to the unit for the same RPM (therefore the entire unit could be built smaller and lighter). Greg Manning, Canadian Gasifier Ltd. Building Hi-Performance Gasifiers, Since 2001 Brandon, Manitoba, Canada 1 (204) 726-1851 -----Original Message----- From: [email protected] [mailto:[email protected]]on Behalf Of jim mason Sent: Saturday, October 02, 2010 4:58 PM To: [email protected] Subject: [Gasification] tests to design a new cheap gasifier fan we've been doing some work lately to design a new fan/blower that will produce the needed vac and heat tolerance for gasifier operation. as we all know, there is not an inexpensive source for such a thing from other industries and applications. thus we had to build one for the early gek kits. the original gek fan proved to not be strong enough once we finally characterized the vac numbers that produce the flow/heat rates that correspond to full tar conversion. the ejector/venturi solution we're using currently produces plenty of vac and is very flexible, but requires compressed air. this is not good for many off grid situations. thus we still need a good fan/blower source. and one that works on 12vdc, not an ac source. here's the info an pictures of our recent tests to produce this. we are working towards a much simplified solution that also gets rid of the welding to make it. this is based on the common car/truck fasco type fan motor. http://gekgasifier.com/forums/showthread.php?t=455 jim -- ---------------------------------------------------------------------------- -- Jim Mason Website: http://www.whatiamupto.com Current Projects: - Gasifier Experimenters Kit (the GEK): http://www.gekgasifier.com - Escape from Berkeley alt fuels vehicle race: www.escapefromberkeley.com - ALL Power Labs on Twitter: http://twitter.com/allpowerlabs - Shipyard Announce list: http://lists.spaceship.com/listinfo.cgi/icp-spaceship.com _______________________________________________ Gasification mailing list [email protected] http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenerg ylists.org No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.856 / Virus Database: 271.1.1/3158 - Release Date: 10/02/10 01:34:00 _______________________________________________ Gasification mailing list [email protected] http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org
