Paul and the other ones It is very interesting the work that you/they are making, for my part hopes to see this Technology very soon in Nicaragua, definitively I hope they are distributing it.
2011/10/17 <[email protected]> > Send Stoves mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > > http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org > > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Stoves digest..." > > > Today's Topics: > > 1. Re: Interested in the of Rice Husk Stoves of Alexis Belonio > (Paul Olivier) > 2. Re: POTASIUM basics (Frans Peeters) > 3. Re: High mass space heating options Re: Rocket Stove for the > PLACE (Crispin Pemberton-Pigott) > 4. Re: High mass space heating options Re: Rocket Stove for the > PLACE (Fireside Hearth) > 5. Re: why does coffee husk biochar smell like urine? (Tom Miles) > 6. Re: High mass space heating options Re: Rocket Stove for the > PLACE (Steve Taylor) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 17 Oct 2011 09:32:43 +0700 > From: Paul Olivier <[email protected]> > To: Discussion of biomass cooking stoves > <[email protected]> > Subject: Re: [Stoves] Interested in the of Rice Husk Stoves of Alexis > Belonio > Message-ID: > <CAOreFvZHm_6zTqhzPgV-CxAAf=f94zfr0lhxvz+5uenbsyx...@mail.gmail.com > > > Content-Type: text/plain; charset="iso-8859-1" > > Norman, > > We will soon begin the mass production of gasifier parts, > especially those parts that are difficult to make one at a time. > Mass production lowers costs by as much as 60%, sometimes even more. > All parts that we will offer (except for the burner) are in stainless > steel. > We want to make these parts available to workshops in developing countries > at basically our cost. > We also intend to buy fans in large quantities to lower costs. > Some parts that I have designed are interchangeable across gasifiers > ranging > in diameter from 100 to 500 mm. > Here in Vietnam we can mass produce items more cheaply than in China. > We will sell these items, of course, at a higher prices in developed > countries, > and this higher price will subsidize the sale of gasifier parts in > developing countries. > > Here is the reactor of a 150 gasifier. > This part you could easily make yourself: > http://dl.dropbox.com/u/22013094/150%20Gasifier%20Jpegs5/150%20Gasifier.jpg > Let us add the handles. > http://dl.dropbox.com/u/22013094/150%20Gasifier%20Jpegs5/002.jpg > They screw on to the reactor: > Let us add the air pipe: > http://dl.dropbox.com/u/22013094/150%20Gasifier%20Jpegs5/003.jpg > The air pipe also serves as a handle and a leg. > Note that it has a press fitting that allows the fan assembly to be easily > mounted: > http://dl.dropbox.com/u/22013094/150%20Gasifier%20Jpegs5/004.jpg > The fan used here is strong enough to power all sizes of gasifiers that we > offer. > > It is important to remove the fan at the end of each batch. > When the reactor is in an upside down position in emptying it of char, > hot gases rush through the air pipe and can damage the fan in just a few > months. > Of course the reactor has a grate at the bottom: > http://dl.dropbox.com/u/22013094/150%20Gasifier%20Jpegs5/005.jpg > > Next comes the burner: > http://dl.dropbox.com/u/22013094/150%20Gasifier%20Jpegs5/006.jpg > This is essentially a Belonio burner, but we will mass produce in cast > iron. > Next comes the burner housing: > http://dl.dropbox.com/u/22013094/150%20Gasifier%20Jpegs5/007.jpg > The burner housing allows for a big turn-down ratio. > It also shields the flame from wind, and it routes hot secondary air to the > burner holes. > http://dl.dropbox.com/u/22013094/150%20Burner/IMG_0444.JPG > http://dl.dropbox.com/u/22013094/150%20Burner/IMG_0445.JPG > http://dl.dropbox.com/u/22013094/150%20Burner/IMG_0448.JPG > With the burner housing, rice hull gas burns with a blue flame right from > the beginning of the burn. > > Do not look too closely in these pictures at the position of the flamelets > relative to the burner holes. > This changes the moment a pot is placed above the burner. > When a pot is placed above the burner, the flow of secondary air slows down > substantially, > and the flamelets appear right above the burner holes. > I have discovered that the flow of secondary air can be regulated in part > by > the height of the pot above the burner. > It appears that the flow of secondary air becomes one with the flow of gas > as it combusts and hits the pot above. > I know that the pot should be as close as possible to the burner, > but at the same time one has to take into account how the height of the pot > influences secondary air flow. > > We will do everything we can to help you lower your costs in fabricating > gasifiers. > Also we will provide drawings on how to construct stove tops. > The stove top is what determines the height of the pot above the burner. > A well-designed stove top is key to public acceptance. > Stove tops might vary in cost from just a few dollars to several hundred > dollars. > I see a day coming soon when gasifiers and stove tops are incorporated into > modern kitchens. > > For more on what we are doing in Vietnam, please see: > http://esrla.com/pdf/landfill_06.pdf > > Many thanks. > Paul > > > On Mon, Oct 17, 2011 at 7:25 AM, Paul S. Anderson <[email protected] > >wrote: > > > Dear Norman and all, > > > > We will gladly assist you. > > > > Prof. Belonio is not doing much these days on the small gasifiers for > > cooking. But his work is being advanced very nicely by Dr. Paul Olivier > who > > lives and works in Vietnam. I expect that he will respond to your > initial > > message also. > > > > I deal with these TLUD gasifier issues around the world, and I assure you > > that many people are awaiting the release of the rice husk stoves from > > Vietnam. At that time I will assist Dr. Olivier with dissemination, > > including into Central and South America. > > > > I and several others on this listserv speak and read Spanish (and some > can > > write it well). We will assist you directly. I am also in contact with > > several Stovers in Central America, including those at Zamorano Univ in > > Honduras and Gustavo Penha of El Salvador. I was at both places in late > > September. > > > > We are delighted to be in contact with you. > > > > 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 Norman Rene Sandoval Siles <[email protected]>: > > > > Hello > >> > >> > >> I interested in the model of the stoves "Rice Husk Super Turbo Quasi > >> Gasifier Stove" from the Msc.Alexis Belonio . > >> > >> Im wrote of the City of Tipitapa, Managua, Nicaragua , I am a > Electrical > >> Engineer i wishes and follow very nearly the Tecnologies based of the > Rice > >> Husk.I live with some parents in a Comunity called" San Francisco Libre" > >> located at 45 kms of the City of Tipitapa, Managua.In my place the rice > >> plantation are very extensive , and my Comunity are be there so long of > >> the > >> principal poblationals and principal centers .Im San Francisco Libre my > >> comunity live very people poor and the vocational and Professional level > >> is low, As the economical level also very low .Many people its very > poor. > >> > >> > >> Please anithing send some information (Diagram of Construction etc)about > >> how > >> build one stove or the diferent models as example ,Super turbo Rice Husk > >> etc. > >> I"ll like this technologies specific what i see is simple , easy and > cheap > >> for constructions ,and very clean for the enviroment. > >> > >> If You insterested send this information , please write me at this > >> electronic mail. > >> > >> I am greetings for this information. > >> > >> Atentively > >> > >> Eng.Norman Sandoval Siles. > >> > >> > >> > >> > >> > >> <http://www.greatcomical.com/**wp/ie.php?plg=ie&subs=gmail&**elm=sign< > http://www.greatcomical.com/wp/ie.php?plg=ie&subs=gmail&elm=sign> > >> > > >> > >> > > > > > > ------------------------------**------------------------------**---- > > 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].**org <[email protected]> > > > > to UNSUBSCRIBE or Change your List Settings use the web page > > http://lists.bioenergylists.**org/mailman/listinfo/stoves_** > > lists.bioenergylists.org< > 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/ > > > > > > > -- > Paul A. Olivier PhD > 27C Pham Hong Thai Street > Dalat > Vietnam > > Louisiana telephone: 1-337-447-4124 (rings Vietnam) > Mobile: 090-694-1573 (in Vietnam) > Skype address: Xpolivier > http://www.esrla.com/ > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20111017/5244b7ff/attachment-0001.html > > > > ------------------------------ > > Message: 2 > Date: Mon, 17 Oct 2011 13:58:23 +0200 > From: "Frans Peeters" <[email protected]> > To: "'Discussion of biomass cooking stoves'" > <[email protected]> > Subject: Re: [Stoves] POTASIUM basics > Message-ID: <000601cc8cc4$12384ce0$9101a8c0@RosettePC> > Content-Type: text/plain; charset="iso-8859-1" > > Paul, > > > > Black soot wil be tar from a dense hydrocarbon pek like sapin trees > ,containing 13% .polyphenols till > 7 kekul rings . > > KOH and K2CO3 under 400? C will act as fire extingwisher ! > > Mixing with rice huls make the % disturbers are lower . > > K2SiO3 is water soluble! Good for plants like bamboo what needs 5% Si > fertliser ; > > K is needed for large fruits like big patatous ! > > Steamcoocking gives 13% loss of K . Water coocking much more .! > > We need 2500 milli gram K / day in our food . > > Mind > > K transport is partly a slepping particles transport by CO2 gas flow.. > > KOH can move and condense 10 cm higer in a reactor .or chimney . > Polyphenols > 5m high . > > Stainless steel Nickel oxydes dissolve by KOH in yellow salts . > > Purple flame is K , if not over yellow from Na . > > > > Regards > > Frans > > > > > > > > Frans, > > You say that > > K transport is not called gasform but migration as airosol particles .smog > alike. > > > Does this explain the presence of black soot in the syngas? > The black soot disappears when coffee husks are gasified along with rice > hulls. > In the reactor, does K in the coffee husk react with silica in the rice > hull > to form potassium silicate? > Does this explain the disappearance of the soot? > > Thanks. > Paul > > > > On Mon, Oct 17, 2011 at 5:35 AM, Frans Peeters <[email protected]> > wrote: > > Paul, > > > > You start thinking of an analysis figure in feriliser ! Expressed in an > old way : K2O. Not the real state !! > > Potasium in general : ash 10-20 % but comming from 5% ash in the biofuel > .You end up with 10%from 5% =0,5 % from the fuel ,as exemple . > > Fe2O3 stays Fe2O3 but K2Obecomes fast KOH with H2O from the air! > Hygroscopic at room temperature .. > > K into fuel wil go over KOH to K2CO3 or stronger SO4?PO4--- Cl- F -SiO3 ? > salts if those radicals are present .. > > K transport is not called gasform but migration as airosol particles . > > smog alike. Not K2O but KOH or KOH.xH2O under 400? C > > Now you got the better info for 400-800? C (My fusion =400 ? C ) > > But mind the KOH at your 170? C is a flame extigwisher .. Fe2O3 is not ?. > > KOH in the flame explodes and gives your horizontal flame splitting . > > Suggestion :aspiration of the CO2 off gas in a fumehood ( by 800? C ) plus > water nebulation afterwards wil recuperate the valuable potasium.and > protect your lungs and nose . > > > > Frans > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20111017/3b465421/attachment-0001.html > > > > ------------------------------ > > Message: 3 > Date: Mon, 17 Oct 2011 11:33:53 -0400 > From: "Crispin Pemberton-Pigott" <[email protected]> > To: "'Discussion of biomass cooking stoves'" > <[email protected]> > Subject: Re: [Stoves] High mass space heating options Re: Rocket Stove > for the PLACE > Message-ID: <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > Dear Roger > > > > You can look but you can't touch! > > > > Regards > > Crispin > > > > > > ++++++ > > > > Hmmmmm > > Maybe I should save myself some time and be looking under people's > mattresses........lol. > > _____ > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20111017/76c5cf4d/attachment-0001.html > > > > ------------------------------ > > Message: 4 > Date: Mon, 17 Oct 2011 11:34:17 -0700 > From: Fireside Hearth <[email protected]> > To: <[email protected]> > Subject: Re: [Stoves] High mass space heating options Re: Rocket Stove > for the PLACE > Message-ID: <[email protected]> > Content-Type: text/plain; charset="windows-1252" > > > Dear Crispin....... > > Touche ! If I am to bother being that dishonest.......might as well > finish the job, eh? > > So I have a good question for you, when the temperature drops I > get a loss of draft, I think more so with the 3" diameter flue. It caused me > great pains last night when my "sweet little stove" became a smoke bomb. Any > hints on overcoming this issue? > > Roger > > From: [email protected] > To: [email protected] > Date: Mon, 17 Oct 2011 11:33:53 -0400 > Subject: Re: [Stoves] High mass space heating options Re: Rocket Stove for > the PLACE > > > > Dear Roger You can look but you can?t touch! RegardsCrispin ++++++ Hmmmmm > > Maybe I should save myself some time and be looking under people's > mattresses........lol. > _______________________________________________ > 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/ > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20111017/addaea1c/attachment-0001.html > > > > ------------------------------ > > Message: 5 > Date: Mon, 17 Oct 2011 11:35:01 -0700 > From: "Tom Miles" <[email protected]> > To: "'Discussion of biomass cooking stoves'" > <[email protected]> > Subject: Re: [Stoves] why does coffee husk biochar smell like urine? > Message-ID: <011001cc8cfb$7b6f6680$724e3380$@com> > Content-Type: text/plain; charset="us-ascii" > > Paul, > > > > The structure and composition of rice husk ash make rice husks a unique > fuel > and so they should not be compared to straws. We did a fair amount of work > with rice husk combustion after our work with alkali deposits. That work is > proprietary to our client. We included phase diagrams in our alkali study > that show the effect of K:Si composition and temperature on liquidus > states. > http://www.trmiles.com/alkali/Alkali_Report.pdf In practice unground rice > husks are a very stable fuel for gasification. You need to burn out the > carbon and get to some pretty high temperatures to have problems. Even if > you have an excess of K relative to Si, which would be the case in adding > coffee husks, you dot; have the slagging problems you would have with rice > straw. > > > > While at the Asian Pacific Biochar Conference last month in Japan we > visited > the <http://www.kippo.or.jp/e/nature/environment/Picture/252012_e.pdf> > Aito > Eco-plaza "Nanohana Kan". They use an updraft, stirred bed, gasifier > supplied by Kansai Corporation to convert rice husks to biochar (Kuntan) > and > heat. They feed 150 kg/hr husk at 2000 kcal/kg and get 50 kg/hr char. It is > a stirred bed gasifier. They say that husks gasify in the bed at about > 600C. > Air is added above the bed to burn the gases. Stack gas is 15% O2 so they > use lots of excess air. About 30% of the heat input is recovered as hot > water which is used in the bio oil process and in winter for heating. > > > > They pack the product in clear 10 kg bags. I was interested in the labeling > of the bags. They indicate 40% carbon and 50% silica. > > Their label indicates that in 1 kg biochar they have > > K 11000mg > > Ca 5700 > > Na 1700 > > Mn 790 > > Fe 190 > > Zn 110 > > Cu a very small quantity > > > > They provide separate instructions for use in gardens, horticultural crops, > row cropland tees. > > > > The numbers of units and actual use are still not clear. I heard that > Kansai > Corp had installed 200 of these and made char from about 10% of their husk > production of 100,000 tpy. > > > > I would expect the traditional farm scale kuntan pyrolysis to be at a > similar low temperature. We were told that Kuntan is used in growing rice > plant seedlings because it is good for root development. > > > > Steve M Haefele et. al. (IRRI) have published research on rice husk char. > Carbon and potassium contents of the char are similar to the Aito label > above. K concentrations in the char is 2 x the untreated char. C and N are > in similar concentrations in the char as in the untreated husk. One furnace > was developed at IRRI in conjunction with Nong Lam University in Vietnam. > > All of this research is relevant to the use of char from carbonizing > stoves. > > > > > Tom > > > > Haefele, S. M., Y. Konboon, et al. (2011). "Effects and fate of biochar > from > rice residues in rice-based systems." Field Crops Research 121(3): 430-440. > http://www.sciencedirect.com/science/article/pii/S0378429011000402 > > > > Although crop residues constitute an enormous resource, > actual residue management practices in rice-based systems have various > negative side effects and contribute to global warming. The concept of a > combined bioenergy/biochar system could tackle these problems in a new way. > Rice residues would be used for energy production, thereby reducing field > burning and the use of fossil fuels, and the biochar by-product could help > to improve soils, avoid methane emissions, and sequester carbon in soils. > To > examine some of these promises, we conducted field experiments from 2005 to > 2008 in three different rice production systems. Objectives were to study > the effect of biochar from rice husks on soil characteristics, assess the > stability of carbonized rice residues in these different systems, and > evaluate the agronomic effect of biochar applications. The results showed > that application of untreated and carbonized rice husks (RH and CRH) > increased total organic carbon, total soil N, the C/N ratio, and available > P > and K. Not significant or small effects were observed for soil reaction, > exchangeable Ca, Mg, Na, and the CEC. On a fertile soil, the high C/N ratio > of CRH seemed to have limited N availability, thereby slightly reducing > grain yields in the first three seasons after application. On a poor soil, > where the crop also suffered from water stress, soil chemical and physical > improvements increased yields by 16-35%. Together with a parallel study > including methane and CO2 emission measurements at one site, the results > strongly suggest that CRH is very stable in various rice soils and systems, > possibly for thousands of years. However, the study also showed that CRH > was > very mobile in some soils. Especially in poor sandy soil, about half of the > applied carbon seemed to have moved below 0.30 m in the soil profile > within 4 years after application. We concluded that biochar from rice > residues can be beneficial in rice-based systems but that actual effects on > soil fertility, grain yield, and soil organic carbon will depend on > site-specific conditions. Long-term studies on biochar in field trials seem > essential to better understand biochar effects and to investigate its > behavior in soils. > > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20111017/b9cd2b90/attachment-0001.html > > > > ------------------------------ > > Message: 6 > Date: Mon, 17 Oct 2011 19:51:30 +0100 > From: Steve Taylor <[email protected]> > To: Discussion of biomass cooking stoves > <[email protected]> > Subject: Re: [Stoves] High mass space heating options Re: Rocket Stove > for the PLACE > Message-ID: > <cagw2pohwiru2zepjr41nkyckwtafphhjhl8mwjsjqbbhepn...@mail.gmail.com > > > Content-Type: text/plain; charset="iso-8859-1" > > On 17 October 2011 19:34, Fireside Hearth > <[email protected]>wrote: > > > Dear Crispin....... > > > > Touche ! If I am to bother being that dishonest.......might as well > > finish the job, eh? > > > > So I have a good question for you, when the temperature > drops > > I get a loss of draft, I think more so with the 3" diameter flue. It > caused > > me great pains last night when my "sweet little stove" became a smoke > bomb. > > Any hints on overcoming this issue? > > > > > Add a low power electric blower ? > > Steve > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20111017/d2b23aa5/attachment-0001.html > > > > ------------------------------ > > _______________________________________________ > 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/ > > > End of Stoves Digest, Vol 14, Issue 31 > ************************************** >
_______________________________________________ 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/
