Hi Krishna, It would be appreciated mate...thanks a lot...
Regarding the website it appeared in..its in the hedon website and also in the boiling point newsletter although the article is really very old... cheers Sarbagya Tuladhar On 9/28/10, Choppalli Venkata Krishna <[email protected]> wrote: > Dear Sarbagya > > Dr. rajendra Parasad is from IIT Delhi. He has retired, but I heard he is > continuing with the Institution. I will trace his address and let U know. > > Pl. let me know the web site in which this had appeared > > regards > > -Krishna > > > > On Mon, 27 Sep 2010 17:12:19 +0530 wrote > >>Hi Krishna, > > > > > > > > Am not quite sure where it would be available for purchase. The design > > > > was that of Prof. Rajendra Prasad from India so I reckon its available > > > > in India (not sure this is much of a help neways)..all the same I am > > > > trying to fabricate a stove based on his design..so its going to be a > > > > 2 burner stove instead of a single burner...havent been able to get in > > > > touch with Prof. Rajendra Prasad regarding the stove..the drawings in > > > > the webpage are quite rudimentary and unclear...Any help possible from > > > > your side would be much appreciated... > > > > > > > > cheers > > > > > > > > Sarbagya Tuladhar > > > > > > > > On 9/27/10, Choppalli Venkata Krishna wrote: > > > >> Dear Sarbagya > > > >> > > > >> Thanks for the details. Please let me know where it is available for > > > >> purchase. If not, can I get a working drawing of the same? > > > >> > > > >> regards > > > >> > > > >> -Krishna > > > >> > > > >> > > > >> > > > >> On Mon, 27 Sep 2010 12:20:51 +0530 wrote > > > >> > > > >>>Hi CVKrishna, > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> Here are the details about the Rajendra Prasad Stove (Varun Stove) > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> Description > > > >> > > > >> > > > >> > > > >> This is a metal stove, easily transportable, strong and sturdy, easy > > > >> > > > >> > > > >> > > > >> to handle, safe to operate, much less smoky, fast and efficient > > > >> > > > >> > > > >> > > > >> burning, not too costly (about 200 Indian rupees (USA) for the large > > > >> > > > >> > > > >> > > > >> size and about 15() Indian rupees (US$6) for the medium one). > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> This is in a way a double walled cylindrical stove, the outer wall is > > > >> > > > >> > > > >> > > > >> a thin plain sheet metal one while the inner one carries several rows > > > >> > > > >> > > > >> > > > >> of small (a few mm dia) holes. The 2mm gap between the walls is open > > > >> > > > >> > > > >> > > > >> towards the bottom of the stove while the top is sealed. The grate is > > > >> > > > >> > > > >> > > > >> made of 0.5 cm thick iron rods, at 0.5 cm spacing having about the > > > >> > > > >> > > > >> > > > >> same amount of spacing between them. The stove is provided with legs, > > > >> > > > >> > > > >> > > > >> handles and pot supports. It is simple to manufacture in any village > > > >> > > > >> > > > >> > > > >> sheet metal workshop. All the materials of construction are available > > > >> > > > >> > > > >> > > > >> in the market without difficulty. No special skill is required to > > > >> > > > >> > > > >> > > > >> manufacture or to use it. > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> Technical Design > > > >> > > > >> > > > >> > > > >> The gap between the two walls has a double function. One, is to act as > > > >> > > > >> > > > >> > > > >> an insulator reducing the heat losses to the atmosphere. This results > > > >> > > > >> > > > >> > > > >> in higher temperatures inside the firebox, easy ignition and more > > > >> > > > >> > > > >> > > > >> complete fuel combustion. > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> Second, the hot air in the gap is drawn through three rows of small > > > >> > > > >> > > > >> > > > >> holes in the firebox wall to supply hot secondary air which is > > > >> > > > >> > > > >> > > > >> extremely useful for the efficient combustion of the fuel and the > > > >> > > > >> > > > >> > > > >> volatile generated. Clear blue flames appear at those holes where the > > > >> > > > >> > > > >> > > > >> hot air meets the volatile gases. > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> The grate supplies the required primary air for the combustion of the > > > >> > > > >> > > > >> > > > >> fuel and allows the ash to fall down without choking the air flow. > > > >> > > > >> > > > >> > > > >> This type of grate is not needed for wood fuel as the ash content is > > > >> > > > >> > > > >> > > > >> much lower and such large spacings create too much free space causing > > > >> > > > >> > > > >> > > > >> heat losses, cooling off the fuel and reducing temperatures inside the > > > >> > > > >> > > > >> > > > >> fuel thus causing difficulties in the ignition of the fuel. > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> Performance > > > >> > > > >> > > > >> > > > >> The performance of the stove is very good. It reduces the smoke > > > >> > > > >> > > > >> > > > >> output, which is normally bad with cowdung fuel, makes lighting up > > > >> > > > >> > > > >> > > > >> easier, needs less attention and reduces the risk of the fire going > > > >> > > > >> > > > >> > > > >> out when re-fueling. Over feeding or under feeding or delays in > > > >> > > > >> > > > >> > > > >> feeding do not cause the fire to go out immediately. The control and > > > >> > > > >> > > > >> > > > >> range of operation of the stove at low power outputs and high power > > > >> > > > >> > > > >> > > > >> outputs is improved. The long steady flames generally visible with > > > >> > > > >> > > > >> > > > >> wood combustion are a rare sight with cowdung cakes. In this stove, > > > >> > > > >> > > > >> > > > >> cowdung cakes almost compete with the wood in this regard. The high > > > >> > > > >> > > > >> > > > >> volatile content generally found a nuisance during combustion by > > > >> > > > >> > > > >> > > > >> causing intense smoke has been converted to an advantage by burning > > > >> > > > >> > > > >> > > > >> after mixing with preheated secondary air. > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> Results > > > >> > > > >> > > > >> > > > >> There is a gain both in terms of better combustion efficiency of the > > > >> > > > >> > > > >> > > > >> fuel and better heat transfer to the vessel. Assuming a net calorific > > > >> > > > >> > > > >> > > > >> value of 2500 kcal/kg for the cowdung cakes, efficiency over 30% has > > > >> > > > >> > > > >> > > > >> been achieved for the large sized stove (suitable for cooking around > > > >> > > > >> > > > >> > > > >> 10 kg of material at a time) and over 20% for the medium sized stove > > > >> > > > >> > > > >> > > > >> of about half that capacity. Cooking is quicker and pans are cleaner. > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> He calls the stove "Varun Chulha Dung Stove" > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> Best Regards, > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> Sarbagya Tuladhar > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> On 9/25/10, Choppalli Venkata Krishna wrote: > > > >> > > > >> > > > >> > > > >>> Dear Sarbagya > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> Please provide the details about Rajendra Prasad Stove using Dung as >>> fuel. > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> regards > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> CVKrishna > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> On Fri, 24 Sep 2010 10:58:38 +0530 wrote > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>>Hi Stovers, > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> Has anyone gone through the Rajendra Prasad design of a cookstove for > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> the clean burning of dung..he actually claims that secondary > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> combustion is possible in such a small stove and in the primary > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> combustion chamber (if I understood that right)...Need help on this > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> ??? > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> Cheers > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> Sarbagya > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> On Thu, Sep 16, 2010 at 1:46 PM, rozis jean-francois > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> wrote: > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> Dear Crispin, > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> I think it can be useful for stovers who want to equip some field lab > > > >>>> with > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> combustion and particles analysers to understand better the method you > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> develop with a dusttrak DRX adapted usually for ambient air. Combustion > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> analyser is easy to operate, and after reading your comments on your > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> Dustrakk DRX it seems same easiness to characterize particles. > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> Your method based with a previous dilution (lower temperature, lower > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> concentration to avoid laser saturation) can be fruitful for everyone >>>> who > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> want to improve/understand their biomass equipment in front of emitted > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> particles. > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> So, my question is, could you produce a small paper to explain your > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> installation, roughly the procedure and interest/accuracy/difficulty to > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> reproduce it. > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> Thanks by advance for your contribution... > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> -- > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> J-F Rozis > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> Tél :0467643816 > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> _______________________________________________ > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> Stoves mailing list > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> [email protected] > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> http://stoves.bioenergylists.org > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> http://info.bioenergylists.org > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> UNSUBSCRIBE HERE; > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> _______________________________________________ > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> Stoves mailing list > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> [email protected] > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> http://stoves.bioenergylists.org > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> http://info.bioenergylists.org > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> UNSUBSCRIBE HERE; > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >>> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> _______________________________________________ > > > >> > > > >> > > > >> > > > >> Stoves mailing list > > > >> > > > >> > > > >> > > > >> [email protected] > > > >> > > > >> > > > >> > > > >> http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org > > > >> > > > >> > > > >> > > > >> http://stoves.bioenergylists.org > > > >> > > > >> > > > >> > > > >> http://info.bioenergylists.org > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> UNSUBSCRIBE HERE; > > > >> > > > >> > > > >> > > > >> http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org > > > >> > > > >> > > > >> > > > >> > > > > > > > > _______________________________________________ > > > > Stoves mailing list > > > > [email protected] > > > > http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org > > > > http://stoves.bioenergylists.org > > > > http://info.bioenergylists.org > > > > > > > > UNSUBSCRIBE HERE; > > > > http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org > > > > _______________________________________________ Stoves mailing list [email protected] http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org http://stoves.bioenergylists.org http://info.bioenergylists.org UNSUBSCRIBE HERE; http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org
