More on this from Dr Karve.
>Date: Wed, 28 Jul 2004 20:04:45 +0530 >Sender: The Stoves Discussion List <[EMAIL PROTECTED]> >From: adkarve <[EMAIL PROTECTED]> >Subject: Re: [STOVES] compact biogas system >To: [EMAIL PROTECTED] > >Dear Tom, >The system that I mentioned in my previous mail produces 16 cubic meters of >biogas, using 16 kg of oilcake of non-edible oilseeds, once every 24hours. >One would require 40 kg dung and fermentation period of 40 days to produce >the same quantity of biogas. Because of the residual oil and the high >protein content of the oilcake, its calorific value is much greater than >that of starch from cereal grains, rhizomes or tubers. As a result, this >particular system is 1600 times as efficient as the conventional biogas >plants. Another person, with whom we are collaborating, has a biogas plant >producing daily 40 cubic meters of gas. He used to feed it daily with 1000 >kg dung, but now he is using daily a mixture of 200 kg cattle dung and 15 kg >sorghum grain flour. He is reluctant to switch over completely to sorghum, >as he feels that the bacteria may go on strike if they did not get their >daily dose of dung. In his case, he replaces 800 kg dung by 15 kg flour and >reduces the reaction time from 40 days to one day. He thus gets an >efficiency that is 2000 times that of the traditional system. >In the moving dome reactors that we use, the gas holder telescopes into the >fermenter. Therefore, the total volume of the system is twice that of the >volume of the gas that you expect to get from it. Now that we have achieved >a higher efficiency of biogas generation, we are thinking of delinking the >fermenter from the gas holder, similar to the new air-conditioners, in which >the noisy compressor is kept out of the room and only the delivery mechanism >for the cool air is inside the room. >Yours >Nandu >Date: Sun, 25 Jul 2004 22:07:37 +0530 >Sender: The Stoves Discussion List <[EMAIL PROTECTED]> >From: adkarve <[EMAIL PROTECTED]> >Subject: [STOVES] compact biogas system >To: [EMAIL PROTECTED] > >Dear Stovers, >We are now collaborating with a voluntary organisation formed by a group of >engineers.A school hostel in the town of Jawhar, Dist. Thane, Maharashtra, >has a biogas plant having a capacity of producing daily 16cubic meters of >biogas. Following my advice, they shifted to using oilcake of locally >available non-edible oilseed cake as the feedstock. They get daily 16 cubic >meters of biogas, using just 16 kg of the oilcake, which costs them only >Rs.32 or USCents 70. The cake comes from three species, namely, Pongamia >pinnata, Madhuka indica and Jatropha curcas.A colleague from the engineers' >voluntary organisation tested a petrol driven electricity generator on this >biogas. They could generate electricity by running the generator entirely on >biogas. A fortnight ago, I tested our biogas on a diesel-driven electricity >generator. This generator could however replace only about 70% of the total >diesel. >Yours >A.D.Karve > >Fwd from the Digestion Discussion List. > > >>Date: Tue, 27 Jul 2004 08:01:18 -0700 >>Reply-To: Art Krenzel <[EMAIL PROTECTED]> >>Sender: The Digestion Discussion List <[EMAIL PROTECTED]> >>From: Art Krenzel <[EMAIL PROTECTED]> >>Subject: [DIG] AD of oil cake >>To: [EMAIL PROTECTED] >> >>Jacky & Sivamalar, >> >>Dr. Karve, located in India, reports very positive results from the >>AD of oilcakes. There could be a problem with chemical >>contamination from the cleanup step in the extraction process. The >>expeller portion of the process produces clean oil. The followup >>step of solvent extraction could have some harmful residues >>depending upon the solvent which is used. >> >>Dr. Karve's latest report is as follows: >> >>We are now collaborating with a voluntary organization formed by a group of >>engineers.A school hostel in the town of Jawhar, Dist. Thane, Maharashtra, >>has a biogas plant having a capacity of producing daily 16cubic meters of >>biogas. Following my advice, they shifted to using oilcake of locally >>available non-edible oilseed cake as the feedstock. They get daily 16 cubic >>meters of biogas, using just 16 kg of the oilcake, which costs them only >>Rs.32 or USCents 70. The cake comes from three species, namely, Pongamia >>pinnata, Madhuka indica and Jatropha curcas.A colleague from the engineers' >>voluntary organization tested a petrol driven electricity generator on this >>biogas. They could generate electricity by running the generator entirely on >>biogas. A fortnight ago, I tested our biogas on a diesel-driven electricity >>generator. This generator could however replace only about 70% of the total >>diesel. >> >>Dr. Karve can be reached at: [EMAIL PROTECTED] >> >>Art Krenzel, P.E. >>PHOENIX TECHNOLOGIES >>10505 NE 285TH Street >>Battle Ground, WA 98604 >>360-666-1883 voice >>[EMAIL PROTECTED] ------------------------ Yahoo! Groups Sponsor --------------------~--> Yahoo! Domains - Claim yours for only $14.70 http://us.click.yahoo.com/Z1wmxD/DREIAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://infoarchive.net/sgroup/biofuel/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Yahoo! 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