Hi Paul, Dung burning using TLUD as a project had been conducted by the final year students of uni of Adelaide of which I was lucky to be a part of. This project was conducted under the EWB Australia humanitarian undergraduate project. Excellent work was done on this. I would very much try to incorporate their findings in my report.
Cheers Sarbagya Sent from my iPhone On 18/03/2012, at 7:00 AM, "Paul S. Anderson" <[email protected]> wrote: > Sarbagya, > > I want to encourage your research on modelling cookstoves in Nepal. > > Please be aware of the Improved Cookstoves called TLUDs and the newest (and > major) variation called TChar (TLUD top and Charcoal stove base). (TChar is > described in 3 documents at www.drtlud.com and is the focal point of > some stove initiatives in Uganda and Haiti.) Some studies of TLUD stove > issues in Nepal have been conducted, with favorable results, but limited by > lack of funding in the recent past. > > The TLUD stoves (including the TChar variation) can utilize dung briquette > fuels very well. In India I successfully experimented with "dung tablets" > that are easy to make in sizes such as rectangles that are 2 - 3 cm on each > side and about 1.5 to 2.5 cm thick. > > I hope that your modelling will include the TLUD approach to using dung as > fuel. > > Members of this Stoves Listserv would appreciate knowing more about you, your > university, and objectives and methods. > > Doc > -- > 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 (excellent ref.) > My website specific for TLUD information: www.drtlud.com = www.DrTLUD.com > > > Quoting SARBAGYA TULADHAR <[email protected]>: > >> Hi Stovers, >> >> I am undertaking my uni graduate project on the Use of CFD for the study of >> heat transfer and convection in a Dung Burning Cookstove. With this project, >> a heat transfer and convection analysis would be carried out using >> Computational Fluid Dynamics (CFD) for the optimization of dung burning >> cooktove that is currently being developed in Nepal. The analysis would >> involve simulation to predict the performance of the cookstove and would set >> up a benchmark for improved stove manufacturing in Nepal. This analysis >> would also assist in providing the experimental and the simulation results >> towards getting the stove certified as an ?Improved Cookstove?. >> >> However to simulate the dung burning I had to resort to using the fixed heat >> source instead as modeling combustion/pyrolysis of dung was beyond the scope >> of the project. So what could be the heat output from burning 1 kg. of dung. >> How mush heat would be released from this ? Is that the calorific value dung >> ? As I would be using a fixed temperature heat source, what could be that >> temperature ? >> >> Cheers >> >> Sarbagya Tuladhar >> >> On 13/02/2012, at 2:27 AM, Anand Karve wrote: >> >>> Dear Richard, >>> The undigested solid matter in the dung is in fact the lignocellulosic >>> matter, However, in the case of ruminents, it is not in a fibrous form but >>> in the form of particles due to the practice of chewing the cud. It is the >>> dung of non-ruminents, like horses and elephants that has fibres. >>> Yours >>> A.D.Karve >>> >>> On Sat, Feb 11, 2012 at 11:30 PM, Richard Stanley >>> <[email protected]> wrote: >>> Ad, >>> >>> I don't personally think the solids would be of much value for a good >>> briquette: What I would look for personally, is your lignocellulosic >>> material, ( the more fibrous stuff) to encapsulate other more carbon rich >>> salt free, materials sawdust charcoal crumbs/ dust, selected agro residues >>> with aromatic-or non aromatic- considerations depending upon what kind of >>> fuel aroma and duration of heat you desire. >>> >>> Richard Stanley >>> >>> >>> On Feb 10, 2012, at 9:36 PM, Anand Karve wrote: >>> >>> Cattle dung consists mainly of non-digestible lignocellulosic material, >>> millions of micro-organisms, mucus produced by the animals and by the >>> microbes, and some minerals. In fact it is the microbes and the mucus in >>> the dung that yield biogas on anaerobic fermentation. A pressurised sieve, >>> technically called a filter press, is the best device for separating the >>> non-soluble solids from the fluids. If the fluids contained the microbes >>> and the mucus, they should be subjected to anaerobic digestion before >>> allowing them to be used as manure. Dung also has a very high ash content, >>> because of which its calorific value is rather low. Dry dung has calorific >>> value of about 3500 kcal/kg. Has anybody measured the calorific value of >>> the solids in the dung, after removal of the fluids from it by using a >>> filter press? >>> Yours >>> A.D.Karve >>> >>> On Sat, Feb 11, 2012 at 8:27 AM, Sarbagya Tuladhar <[email protected]> >>> wrote: >>> Hi Boston >>> >>> >>> I volunteered with EWB Australia in Nepal working on a clean dung burning >>> stove and thus worked with the dung as a fuel . Washing of the dung was >>> done and briquettes which was a real success. Paper pulp used as a binder >>> worked really well. Also the chloride contents of the dung which is >>> responsible for watery eyes was removed on washing the dung which was >>> proven by the copper wire test. We even fabricated a simple dung press for >>> the same. The liquid portion of the dung was reutilised as manure in the >>> fields. Thus the whole sceptism about "should" use dung as manure in the >>> fields and not as a cooking fuel was somewhat solved. Did not test the NPK >>> contents of the liquid portion though... >>> >>> Sarbagya >>> >>> Sent from my iPhone >>> >>> On 11/02/2012, at 2:06 AM, Boston Nyer <[email protected]> wrote: >>> >>>> Hello, >>>> >>>> I'm looking to clean/rinse cow dung and do not have any experience doing >>>> so. Does anyone have any experience cleaning dung and would like to share? >>>> >>>> Thank you! >>>> Boston >>>> >>>> -- >>>> Boston >>>> Skype: BostonNyer >>>> Cell: (585) 503-3459 >>>> www.burndesignlab.org > > > ---------------------------------------------------------------- > 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/
