To: Discussion of biomass pyrolysis and gasification <[email protected]
Has anyone tryed using the rotor out of a turbocharger to make a fan for a gasifier. I have taken the compressor end apart and made an adapter to mount on a C face motors, usually 3600 rpm, for a high volume vac system to move solids. Les Freeman ----- Original Message ---- > From: Bill Klein <[email protected]> > To: Discussion of biomass pyrolysis and gasification ><[email protected]> > Sent: Fri, November 12, 2010 7:25:44 PM > Subject: Re: [Gasification] tests to design a new cheap gasifier fan > > Jim, isn't eight inches a bit high? We use a lot of Cincinnati and Granger > fans successfully and find their designs well presented and worth emulation > and learning from their engineering, since we lack the time to rediscover > wheels and sliced bread. (Thank you, Mark!) > > Respectfully, > > Bill Klein, > 3i > > > ----- Original Message ----- > From: "jim mason" <[email protected]> > To: "Discussion of biomass pyrolysis and gasification" > <[email protected]> > Sent: Friday, November 12, 2010 5:13 PM > Subject: Re: [Gasification] tests to design a new cheap gasifier fan > > > here's some update on the fan tests, including a picture of many > rotors tested: http://gekgasifier.com/forums/showthread.php?p=1664#post1664 > > the suggestions from all of you were very intersting. especially the > toby and greg suggestions to try a second plate on the inlet side of > the rotor, and an inlet tube to minimize the space between the inlet > and rotor. thank you for these suggestions toby and greg. > > we've now built these variations and many others for our 10-11" rotor > @4000rpm solutions. sadly, there is has not been any great bumps in > vac with any of these. efficiency may change a bit, but in the > pursuit of higher vac, they are not proving to be worth the effort. > > so far the only thing that seems to matter is tip speed. you get this > through either rpm or diameter, or both. as we are working with a > power limited 12vdc motor, which will top out rpm wise in relation to > rotor bite, varying rotor bite has quite a bit of impact. > > the other surprising impact is seemingly the space between the rotor > and the housing. one would assume a tight fit between the rotor and > the housing is good. we've found the opposite to be true. a 1.5"-2" > or so open space on this rotor size vs .25" has made one of the > biggest impacts on vac potential. > > this open space between the rotor and fan housing is typical in the > professional fans you see from cincinnati fan and the like. i decided > this was counterproductive for vac generation and changed it. turns > out it is important. > > otherwise, we remain topped out at about 8" of h2o with the current > 12vdc fan motor. this is the highest power automotive/truck type fan > motor we can find. > > we'll post the actual numbers in more detail soon. in the interim, > the picture of many of the rotor blades and housing variations are > here: http://gekgasifier.com/forums/showthread.php?p=1664#post1664 > > thank you goes to nathaniel at apl for running all these tests. > > jim > > > > > On Sat, Oct 2, 2010 at 7:39 PM, Greg Manning <[email protected]> wrote: > > > > > > 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 > > > > > > > -- > ------------------------------------------------------------------------------ > Jim m 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 > > 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/gasification_lists.bioenergylists.org >g > > for more Gasifiers, News and Information see our web site: > http://gasifiers.bioenergylists.org/ > > > > _______________________________________________ > Gasification 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/gasification_lists.bioenergylists.org >g > > for more Gasifiers, News and Information see our web site: > http://gasifiers.bioenergylists.org/ > _______________________________________________ Gasification 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/gasification_lists.bioenergylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/
