Hi Ron, 1.) For the EPA we tried to burn all the fuel about 2/3 as wood and 1/3 as charcoal to get the best fuel economy. 2.) As far as I can tell, no primary air can make it up through the pellets until 2/3 fuel is gone and the bottom air gets up through the remaining charcoal. 3.) I don't remember exactly. We used a StoveTec Rocket and added something like a 9" chimney. We probably used around 1000 grams of fuel to begin. 4.) No. 5.) No field tests yet. 6.) TLUD cost could be the same as a Rocket.
I hope that some place in the world will be positioned to make 100% renewable pellets, get carbon credits, and use super clean TLUDs. We'll see. Natural draft is obviously easier than having to use an electric fan. I think that it's possible that some government or large business will follow the BP model. I think that the job of the stove movement is to be ready with the engineering design principles for TLUDs, fan stoves, super clean Rockets when a capable entity is ready to move forward. All Best, Dean On Sun, Oct 23, 2011 at 2:59 PM, <[email protected]> wrote: > Dean - with few ccs. > > > Thanks for the added information. Just a few more questions: > > 1. Have you ever tried to maximize char production - and what amount did > you then obtain, if tried? > > 2. What was the mechanism for controlling primary air, if any - and did > that help with the test? > > 3. For the reported PCIA numbers, what were the key dimensions (diameters, > heights, fuel amount, etc). > > 4. Were you using a convective shield? > > 5. If tested in the field, any response yet by users? > > 6. Should manufacturing cost and lifetime be similar to your rocket? > > Thanks in advance. > > > Ron > ------------------------------ > *From: *"Dean Still" <[email protected]> > *To: *[email protected] > *Cc: *"Discussion of biomass cooking stoves" < > [email protected]>, "Paul S. Anderson" <[email protected]> > *Sent: *Sunday, October 23, 2011 3:16:18 PM > > *Subject: *Re: [Stoves] Hi TLUDers -- and EPA testing questions > > Hi Ron, > > Paul, Christa, Paal, Art and others taught at several TLUD oriented Stove > Camps how to make TLUDs. All we did was to change different amounts of air, > mixing, heat transfer strategies to the prototype design under the emissions > hood. The emission hood lets us tune a stove the way cars are tuned. > > The TLUD we sent to Jim has a lot of fast air and mixing at the top of the > fuel bed. We have the fuel sitting on a screen letting in as much bottom air > as possible so the charcoal catches on fire and helps to cook the food or > simmer the water. The stove burns up all the fuel. We pay a lot of attention > to making the heat transfer to the pot as good as possible. > > I think it's really neat that a stove can either make bio-char or not by > controlling the bottom air so consumers can pick what they want the stove to > do. > > Great to hear from you. > > Dean > > On Sun, Oct 23, 2011 at 1:03 PM, <[email protected]> wrote: > >> Dean (cc list and Paul) >> >> Thanks for the PCIA link - which I found most interesting. >> >> I do not know anything about the Stove-Tec TLUD - which came across >> as being very successful. >> >> Can you either describe some details of your design - or send us to an >> existing web description? What might you have done differently than other >> TLUDS? >> >> Is there a reason that data for it were not in all the PCIA report >> graphs? >> >> Ron >> >> ------------------------------ >> *From: *"Dean Still" <[email protected]> >> *To: *"Paul S. Anderson" <[email protected]> >> *Cc: *"Discussion of biomass cooking stoves" < >> [email protected]> >> *Sent: *Saturday, October 22, 2011 6:28:32 PM >> *Subject: *Re: [Stoves] Hi TLUDers -- and EPA testing questions >> >> >> http://www.pciaonline.org/files/PCIA_LabTestResults_webinar_final.pdf >> >> Hi Paul, >> >> Here's what PCIA published on the first round of testing. I see that a lot >> of your questions are answered there. >> >> My idea was that if TLUDers find it useful they can for free use our >> emission equipment. >> >> All Best, >> >> Dean >> >> On Sat, Oct 22, 2011 at 5:00 PM, Paul S. Anderson <[email protected]>wrote: >> >>> Dear Dean and all, >>> >>> I know of at least 5 TLUDs, each from a separate PCIA Partner, that have >>> been proposed for testing by Jim Jetter for this third round. >>> >>> The Aprovecho offer of a free tune up under the emissions hood is nice. >>> Is that offer matched by Zamorano in Honduras or CREEC in Uganda or any >>> other place with PEMS equipment? >>> >>> Question: Does a person need to go to Oregon, or could the stove be sent >>> with instructions? Cottage Grove is only convenient and inexpensive for >>> those who live within a hundred miles!! >>> >>> And does Aprovecho have the SAME fuels as what Jim will be using? By >>> the way, what are the acceptable fuels now at the EPA testing? >>> >>> Another question is how is the WBT used by the EPA different from which >>> version of the other WBT's? I would like a short summary, not just a >>> reference to multi-page documents where the methods are written but the >>> differences are not pointed out. >>> >>> BTW, what TLUDs have been tested previously??? >>> >>> ??? With fans: Oorja (yes) and Reed Campstove (??) and BioLyte (??) and >>> Belonio (??) others? >>> >>> ??? And natural draft: Peko Pe (?) and experimental unit from StoveTec >>> (yes) and what else? >>> >>> Paul >>> -- >>> Paul S. Anderson, PhD >>> Known to some as: Dr. TLUD Doc Professor >>> Phone (USA): 309-452-7072 SKYPE: paultlud Email: [email protected] >>> www.gtz.de/de/dokumente/**giz2011-en-micro-gasification.**pdf<http://www.gtz.de/de/dokumente/giz2011-en-micro-gasification.pdf> >>> (Best ref.) >>> >>> >>> Quoting Dean Still <[email protected]>: >>> >>> Hi Stovers! >>>> >>>> Sorry to have been out of touch. My email was messed up in a subtle way. >>>> >>>> Jim Jetter (EPA/PCIA) is doing a second round of stove testing. He is >>>> finding out fantastic things about emissions, testing, etc. We are very >>>> lucky to have such a great guy and activity going on. >>>> >>>> Natural draft TLUDs were shown in the first round to successfully >>>> compete >>>> with fan stoves for low fuel use and emissions. Congratulations to Tom >>>> Reed, >>>> Paal Wendelbo, Paul Anderson, Ron Larson, Christa Roth, etc who invented >>>> and >>>> developed the TLUD! >>>> >>>> To those who are going to submit a TLUD to Jim, please feel free, if >>>> you'd >>>> like, to come to our lab for a free tune up using the emissions hood. >>>> >>>> Strong hot coffee, Fall in Oregon, super low emissions. What could be >>>> better? >>>> >>>> All Best, >>>> >>>> Dean >>>> >>>> >>> >>> >>> ------------------------------**------------------------------**---- >>> This message was sent using Illinois State University RedbirdMail >>> >>> >>> >> >> _______________________________________________ >> 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://www.bioenergylists.org/ >> >> >
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