[Stoves] The PROTOS Plant Oil Cooker

[Keith Addison]

Hello Anil

Thanks for the information on the Noorie lantern.

By the way, BriteLyt says their Petromax multi-fuel lanterns work 
well on biodiesel. I haven't tried it, but one of our mailing list 
members bought one and he couldn't even persuade it to run on 
kerosene! Must have been a faulty one I suppose, but we didn't hear 
the end of the story.

>Hello everybody!
>
>Our Noorie lantern does not work on biodiesel. After couple of days the
>nozzles gum up. The biggest problem that people working in mantle do not
>realize is that the mantles are very fragile and hence they require flame
>pressures which are just the right size. Some of the vegetable oils require
>high presurres to burn in order to avoid gumming up of nozzles.
>
>Mixing biodiesel with kerosine may work but then the whole purpose of
>biodiesel economy is negated.

It would still use less kerosene though. By comparison, though it's 
not our way of doing things, the NBB in the US makes quite a good 
case for their promotion of B20 biodiesel (20% biodiesel 80% 
petrodiesel) rather than pure biodiesel (B100), and it includes 
emissions reductions, not just the most efficient use of subsidies 
and rebates.

>That is the reason why we have gone on
>developing a low ethanol concentration lantern. Right now it is undergoing
>thorough testing. The lantern produces 1400-1500 lumens light and runs on
>50% ethanol/water concentration.

Do you have a more recent reference to that work than this one?

Ethanol stove -- "Development of Stove running on low ethanol 
concentration", Anil K. Rajvanshi, S. M. Patil and Y. H. Shaikh, 
Nimbkar Agricultural Research Institute (NARI) -- 80k Acrobat file.
http://www.nariphaltan.org/ethstove.pdf

>By the way we have run biodiesel in the Primus stoves. After a week the
>nozzle gums up.

I haven't tried a Primus. We used pure biodiesel in a kerosene 
pressure stove for nearly two years. The stove came from India and it 
cost 480 rupees, US$8, so I think it should be typical. Had to use 
the pricker sometimes but not too often. After two years the inside 
seal on the pump broke, which I think would have been easily replaced 
in India, but not here. Now we're using another roarer, from the 
Philippines, with no problems so far. The first stove is here, 
burning biodiesel:
http://journeytoforever.org/biodiesel_processor10.html#stove

If you're getting gummed-up nozzles after a week I'd question the 
quality of the biodiesel you're using. There are some simple quality 
tests here that you can use:
Quality testing
http://journeytoforever.org/biodiesel_vehicle.html#quality

Thanks again, all best

Keith



>The Bosch people have increased the preheating chamber and
>so may be able to run the stove for longer tme.
>
>All the best. Anil
>
>
>On 5/3/07, Keith Addison <keith at journeytoforever.org> wrote:
> >
> > Hello Michael
> >
> > Thanks for this.
> >
> > >Dear Keith:
> > >
> > >I have tried coconut oil -100%  75 %  and 50 % essentially do not work at
> > >all
> > >in a regular "Dietz" type lantern   By the time you get to about 75%
> > >kerosene and 25 % coconut oil
> > >it will work-- poorly. The small cost saving at that point along
> > with  very
> > >poor lamp performance make it
> > >all a moot point anyway..
> >
> > That's a useful result. I'm not sure that having to buy 25% less
> > kerosene would be only a small cost saving, in many cases. We've had
> > quite a lot of emails at Journey to Forever from people from or in
> > poor communities asking how people in their villages can use
> > vegetable oil to reduce or replace the cost of kerosene used for
> > cooking and lighting.
> >
> > A "Dietz" lantern might be easier to modify than a wick stove, if you
> > can let a little more airspace into the weave of the wick somehow, or
> > replace it with something looser. Winding the wick up and down might
> > be troublesome, beyond a certain point. Worth messing with?
> >
> > The Nimbkar Agricultural Research Institute (NARI) in India developed
> > a pressurised mantle lantern that uses 60% of the kerosene used by
> > ordinary Petromax-style lanterns and will also run on diesel fuel or
> > ethanol and can be used as a cooker. See:
> > http://nariphaltan.virtualave.net/lantern.htm
> >
> > I don't know if they've tried it, but it should also run on biodiesel
> > without problems, since pressure kero stoves run well on biodiesel.
> > The same goes for ordinary Petromax-style lanterns too. Both might be
> > able to use a proportion of vegetable oil.
> >
> > But I think there are far more wick stoves than pressure kero stoves
> > in use, and far more kerosene wick lanterns than pressure lanterns,
> > and wicks are more difficult.
> >
> > Thanks again Michael.
> >
> > Keith
> >
> >
> >
> > >Michael N Trevor
> > >Enemanit
> > >Marshall Islands
> >
> >
> > _______________________________________________
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> >
>
>
>
>--
>Nimbkar Agricultural Research Institute (NARI)
>Tambmal, Phaltan-Lonand Road
>P.O.Box 44
>Phaltan-415523, Maharashtra, India
>Ph:91-2166-222396/220945
>e-mail:nariphaltan at gmail.com
>          anilrajvanshi at gmail.com
>http://nariphaltan.virtualave.net
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