[Stoves] Stoves Digest, Vol 6, Issue 17

David Osborne celsius4u at hotmail.com
Wed Feb 23 16:28:33 CST 2011 

Dear Sirs, 
I dearly would like to update you all on the progression of the Jompy boiler. We have conducted local testing in East & South Africa as well as Southern India and UK camping markets. Both the cultural needs and the functionality have been tested and accepted as extremely beneficial to the users. We have also conducted two papers by Glasgow University, one on the carbon viability and the other on a health and social impact study, we aim to show these reports and gain a definate footing in the carbon market. We already have distribution sorted in South Africa and Kenya.  We have manufacturing in order and have sufficient capacity with expansion available.  We ask the stover community to look at our videos on our website and asses.     

www.jompy.co.uk

A special hello to Paul Anderson and Karsten Betchel who know about the jompy boiler. 

> From: stoves-request at lists.bioenergylists.org
> Subject: Stoves Digest, Vol 6, Issue 17
> To: stoves at lists.bioenergylists.org
> Date: Wed, 23 Feb 2011 12:00:01 -0800
> 
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> Today's Topics:
> 
>    1. Re: Stoves Digest, Vol 6, Issue 14 (Richard Stanley)
>    2. Re: Fwd: Happy New year 2011 (Richard Stanley)
>    3. Re: Building my Heat / cook stove. (Darren Hill)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Wed, 23 Feb 2011 01:25:09 -0500
> From: Richard Stanley <rstanley at legacyfound.org>
> To: Discussion of biomass cooking stoves
> 	<stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] Stoves Digest, Vol 6, Issue 14
> Message-ID: <5A19D8FF-1100-4D8B-84BC-37CD9980E956 at legacyfound.org>
> Content-Type: text/plain; charset=us-ascii
> 
> Jim, 
> tried this 6 months ago and it has since expanded about 25% 
> Good idea though. Just have to find the time !
>  Richard
> 
> 
> On Feb 20, 2011, at 9:12 PM, jim mason wrote:
> 
> >> 
> >> Message: 1
> >> Date: Sat, 19 Feb 2011 16:21:29 -0800
> >> From: Richard Stanley <rstanley at legacyfound.org>
> >> To: fuelbriquetting <fuelbriquetting at googlegroups.com>, Stoves and
> >>        biofuels network <Stoves at lists.bioenergylists.org>
> >> Subject: [Stoves] Fwd: Briquette Mini press.mp4
> >> Message-ID: <C2CEE8D4-EF2B-41CA-845B-48BFA821AB81 at legacyfound.org>
> >> Content-Type: text/plain; charset="us-ascii"
> >> 
> >> Hello all,
> >> 
> >>  Just a quick note to announce a new press  which we have developed in collaboration with Rok Oblak <mbdulastoves at wordpress.com>.
> >> 
> >> We will soon have the plans for it for purchase through our website and Rok and I will both develop the capacity to supply it in bulk for emergency/ disaster releif assistance efforts.
> >> 
> >> We are also seeking collaborants around the globe for production of it to their respective nations and regions to respond to their local demand. We have identified collaborants for Tanzania and South africa to date...which leaves a pretty wide open list at this point.
> >> At about 30 seconds per 130 gram 550 cc briquette, per one operator, its probably amongst the more productive presses out there but it is also made of metal and requires welding and some attention to tolerances...
> >> 
> >> But before you deluge Rok and I with orders,  there are about 20 other press options to choose from by now-- according to one's own needs, the kind of blends one is intent upon using, and the  resources and skills for fabricating and maintaining the  press, so let the best option prevail.
> >> 
> >> Now that I have almost thoroughly unsold it, enjoy,
> >> 
> >> Richard Stanley
> >> www.legacyfound.org
> >> NWObamland
> >> 
> > 
> > 
> > richard.  this looks great.  congratulations on getting through the
> > many details of design.  and great t hear you have options for
> > distributed manufacturing of it.
> > 
> > on your other comment, have you or any other locals here put together
> > an index of current briquetting and pelleting machinery for relatively
> > low cost use?  it would be great to have an index of both manual and
> > driven briquetting currently available machinery.
> > 
> > also, nice slide in the background!
> > 
> > j
> > 
> > _______________________________________________
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> 
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Wed, 23 Feb 2011 10:08:01 -0500
> From: Richard Stanley <rstanley at legacyfound.org>
> To: Discussion of biomass cooking stoves
> 	<stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] Fwd: Happy New year 2011
> Message-ID: <7BBBB560-4561-4D45-B7A5-D55B0EA42B15 at legacyfound.org>
> Content-Type: text/plain; charset=us-ascii
> 
> Dear Sarbagyaji,
> Namaskar,
> Thanks for your interest on briquetting in Bhairawa. I will be arriving in Nepal only on April 13, 2011.
> 
> Sanu Kaji Shrestha
> 
> On Feb 22, 2011, at 6:14 AM, Sarbagya Tuladhar wrote:
> 
> > Hi to all,
> > 
> > I am at the moment based in Bhairahawa working as a stove design
> > engineer for EWB Australia along with a local NGO NAMUNA. We are
> > working on designing a clean dung based cooking stove for the local
> > community here. The community here are entirely dependent on dung as a
> > fuel for cooking purpose. I have been working with "washing" the dung
> > before using as a fuel to remove the toxic gases in the fuel. After
> > the process of "washing" briquetting the dung is the next step. I
> > would certainly be meeting up with Mr. Sanu Kaji Shrestha in Kathmandu
> > during the first week of March. I am certain that his valuable
> > expertise will benefit me immensely. It would also be great to keep in
> > touch with Ranju Pandey. Does anyone know when the conference in Peru
> > concludes and Mr Sanu Kaji is back in ktm...
> > 
> > Best Regards,
> > Sarbagya Tuladhar
> > EWB Australia
> > Stove Design Engineer
> > 
> > On 2/21/11, Richard Stanley <rstanley at legacyfound.org> wrote:
> >> Greetings Ranjit,
> >> I am right now on Peru at the PCIA conference with Sanu Kaji of the FoST
> >> organization based in  Thamel !
> >> He is the best person to respond to you concerning briquette making in
> >> Nepal. The stoves and biofuels network is also a very good technical
> >> resource for discussion of possible emissions issues. I have ccy'd them as
> >> well to introduce you.
> >> Warm greetings to your family from Joyce and myself.
> >> Regards,
> >> Richard
> >> 
> >> Sent from my iPhone
> >> 
> >> Begin forwarded message:
> >> 
> >>> From: Ranju Pandey <ranjupandey at yahoo.com>
> >>> Date: February 21, 2011 3:36:45 AM GMT-05:00
> >>> To: Richard Stanley <rstanley at legacyfound.org>
> >>> Subject: Re: Happy New year 2011
> >>> 
> >> 
> >>> Hello Sir
> >>> Sorry for the late reply .Busy with alot of work in office , field visit
> >>> to Okhaldhunga(mid hilly area of the country) where we are implementing
> >>> the project. We have just installed the oil expeller in one rural village
> >>> named Manibhanjyan. Since the collection of Jatropha seed is going on and
> >>> they also expell the seed and obtain the oil and seed cake too . They use
> >>> seed cake for the fertilizer and it can be also used as brequette and used
> >>> as fuel for cooking too.
> >>> Therefore I want to know is it possible to make brequette from the seed
> >>> cake and if it is possible than we can produce biofuel and brequette
> >>> too.Then if we can do it than the rural farmer will be more  benefited
> >>> from the project.
> >>> Hoping for the suggestion from your side as you are expert in this
> >>> technology .
> >>> 
> >>> Your sincerely
> >>> 
> >>> Ranju Pandey
> >>> Bio fuel Manager
> >>> People, Energy and Environment Development Association (PEEDA)
> >>> Bhanimandal, Ekantakuna
> >>> Post Box No.8975, EPC 2157
> >>> Kathmandu, Nepal
> >>> Phone: +977-1-5540792 or 5530337
> >>> Fax :+977-1-5529873
> >>> e-mail: ranju at peeda.net
> >>> web: www.peeda.net
> >>> 
> >>> 
> >>> From: Richard Stanley <rstanley at legacyfound.org>
> >>> To: Ranju Pandey <ranjupandey at yahoo.com>
> >>> Cc: Kaji Sanu <fost at ntc.net.np>
> >>> Sent: Tue, 11 January, 2011 23:32:30
> >>> Subject: Re: Happy New year 2011
> >>> 
> >>> Ranju,
> >>> Thanks for you very nice letter which I just received this morning. You
> >>> ill be making a good contribution. e run or own car a 2006 Volkswagen
> >>> Passat tdi, on biodiesel here and it feels good to be doing good things...
> >>> 
> >>> Do you know of my colleague Sanu Kaji who heads the Foundation for
> >>> Sustainable Technologies no ? I would suggest the next time you are back
> >>> in Kathmandu, you go over to see his center..You have a lot in common. He
> >>> does not work with biofuel and you do not work with briquettes but I
> >>> wouldn't be surprised if you both take interest in the other technology as
> >>> a result of your visit !
> >>> 
> >>> I have ccy'd him this note to introduce you to each other...
> >>> 
> >>> All the best in 2011 and again thanks for your nice letter . I hope your
> >>> family is all doing well too.
> >>> 
> >>> Our christmas letter is attached.
> >>> 
> >>> Richard Stanley
> >>> Legacyfound.org
> >>> 
> >>> 
> >>> 
> >>> On Jan 10, 2011, at 11:12 PM, Ranju Pandey wrote:
> >>> 
> >>>> Dear sir ,
> >>>> Happy New Year 2011 for you and your family .May this year bring alot of
> >>>> joy and happiness in your life .
> >>>> As far as I am concerned , I return back from Germany completing my
> >>>> master degree in Energy and Environment management at the end of
> >>>> september 2010.
> >>>> At present I am working as a Bio-fuel Manager in one of the NGO named
> >>>> "People ,Energy and Environment Development Management (PEEDA)"
> >>>> I am involved in the Bio-fuel pilot project implemented in  Okhaldhunga
> >>>> ,the rural and remort part of Nepal .
> >>>> Project is all about using the non edible oil from Jatropha plants ,for
> >>>> runing the Hospital Generator .
> >>>> 1st Novemeber onward , I am working in  this project .
> >>>> Once again wishing you a very happy new year to you .
> >>>> Keep in touch and bye for now
> >>>> 
> >>>> 
> >>>> Ranju Pandey
> >>>> Bio fuel Manager
> >>>> People, Energy and Environment Development Association (PEEDA)
> >>>> Bhanimandal, Ekantakuna
> >>>> Post Box No.8975, EPC 2157
> >>>> Kathmandu, Nepal
> >>>> Phone: +977-1-5540792 or 5530337
> >>>> Fax :+977-1-5529873
> >>>> e-mail: ranju at peeda.net
> >>>> web: www.peeda.net
> >>>> 
> >>>> 
> >>> 
> >>> 
> >> 
> > 
> > _______________________________________________
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> > 
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> 
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Mon, 21 Feb 2011 12:39:54 +0000
> From: Darren Hill <mail at vegburner.co.uk>
> To: Discussion of biomass cooking stoves
> 	<stoves at lists.bioenergylists.org>
> Subject: Re: [Stoves] Building my Heat / cook stove.
> Message-ID: <4D625D1A.3090102 at vegburner.co.uk>
> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
> 
> Hello Crispin,
> 
> The bleed is at top bypassing the need for gases to go down past the 
> heat exchanger.
> 
> Secondary air is flowing in through some 20mm x 20mm internal diameter 
> square section tubing.  Is this enough or do I need more? Another 20mm x 
> 20mm square section tube? More?
> 
> I've attached another diagram which shows things as they are currently 
> planned/progressing.
> 
> Looking at this diagram.  Are you saying to have some of the grate to 
> the left of the red line I've drawn on the diagram?
> 
> Currently this is the thinnest point (or bottle neck, or throat) and has 
> a vertical ceramic slab either side so that this 'throat' is not the 
> full width of the hopper.  Extending the grate further to the left will, 
> in effect, increase the area of the thinnest point.  I currently plan to 
> have the lowest part of the grate level with the bottom of the ceramic 
> block (that is the floor of the combustion chamber) so it is away from 
> the thinnest/hottest area.
> 
> Is it best to shift the grate to the left?
> If so what % of the grate left of the red line?
> Should I also raise the grate so that the its level with the top of the 
> ceramic block that is the floor of the combustion chamber?
> 
> I'm working on the stove today and tomorrow.  Going to build the air 
> tight doors today.
> 
> Best
> 
> Darren
> 
> 
> 
> On 08/02/2011 21:13, Crispin Pemberton-Pigott wrote:
> >
> > Dear Darren
> >
> > First the cast iron grate is about right for the 4 kW (average, not 
> > peak) power you want. I have been trying to make a 4 kW stove that 
> > burned clean and the whole grate area is about 155 x 220 after 
> > discounting the parts that are hiding under shields. What matters is 
> > the volume of coal or wood burning at once. That sets the power level.
> >
> > I just want to confirm that the bleed hole takes hot fire gases from 
> > the top of the combustion area into the flue before they go down into 
> > the heat exchange, in other words like a GTZ 7.5 (now to be called a 
> > GIZ 7.5 after their name change).
> >
> >
> > ***** Do people think this should this provide sufficient secondary 
> > air or should I put another similar secondary inlet in the front of 
> > the burner??? *****
> >
> > Actually I can't see it clearly. How big is it?
> >
> >
> > >With this 'door' wide open the bleed hole is 5cm x 10cm
> >
> > That is easily large enough.
> >
> >
> > >My friend had a grate from an old coal stove that appeared to be a 
> > suitable size and we intend to use - from memory this grate is approx 
> > 15cm x 20cm.  Thinking of having the 15cm side in front of the 10cm 
> > throat through into the combustion area.
> >
> > The whole grate does not need to be under the combusting zone. About ? 
> > is correct to give a crossdraft through the bottom of the fuel in the 
> > hopper.
> >
> >
> >
> > >>Based on the hopper size, and presuming you have about 4 metres of 
> > chimney,
> >
> >
> > >If the chimney was shorter what would be the effect?
> >
> > Power is related to the draft, taller chimney means more draft means 
> > more power. You can choke it of course with a damper.
> >
> >
> > >The primary air hole should be 30x120mm?  With a valve so its adjustable?
> >
> > Yes. If you are quite short, it will be obvious in the thermal 
> > efficiency number because too much excess air (secondary air 
> > oversupplied) will give a cool burn and a high Stack EA (= low 
> > efficiency).
> >
> >
> > >Shes got plenty experience making air tight doors
> >
> > Good!
> >
> > The Hopper size:
> >
> > >Am I better reducing dimensions more than we are talking here?
> > >Throat?
> > >Hopper area?
> >
> > You can easily slim the hopper by dropping clay slabs inside it to 
> > narrow it. Ditto with the grate actually.
> >
> > >- or do I not want the entire floor of the hopper to also be a grate?
> >
> > Yes, almost. As the air is not rising into the hopper other than 
> > enough to get over to the combustion area, making it too small or too 
> > much tucked under the combustion area will limit the power, maybe to 
> > the point of it not working well. In your drawing you have the grate 
> > nicely angled but stopping before it got under the combustion area. 
> > With the angled grate extending from under the hopper (except perhaps 
> > the bit at the very front) to the back of the combustion area (the 
> > flame runs vertically from there) you can make a crossdraft fire that 
> > is adjustable across a pretty good heat range.
> >
> >
> > Perhaps you can make a good drawing in cross section of what you have now.
> >
> > Regards
> >
> > Crispin
> >
> >
> > _______________________________________________
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