[Stoves] Belonio burner top on TLUD stoves was Re: radiant heat capture, total heat measurement

Sat Mar 17 18:49:45 CDT 2012

Dear Alexis,

I would like to share a set of drawings of the 150 gasifier.

Here is the reactor in stainless steel:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/001.pdf
The basic dimensions of the reactor are yours.
At the moment I am using 430 stainless steel.
I think that this quality of stainless steel is sufficient for rice hulls.
If coffee husks are gasified, then a higher quality stainless steel will be
needed.
I do not put a housing around the reactor.
Instead I put an enclosure around the entire gasifier.
The air pipe is welded to the reactor.
The air pipe serves as an air pipe, as one leg in a triple leg set, and as
a handle in the emptying of the gasifier.

Here is the fan base:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/002.pdf
The DC fan used here (40x40x28 mm) does not have to be bolted to the base.
There is enough friction with the four protrusions to keep it in place.
The air resistance of the fan should be at least 0.6 InAq.

Here is the speed regulator box:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/003.pdf
Any electronic television repair man can assemble the parts that go into
this box.
The speed regulator has to move smoothly in very small increments.

Here is the complete fan assembly:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/004.pdf
This fan assembly is designed to be detached in an instant.
It should be removed before the reactor is turned upside down for the
emptying of char.
If it is not removed, hot air rises up through the upside-down reactor and
damages the fan.

Here is the reactor grate:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/005.pdf
Note the the grate holes are of a smaller diameter than what you had
recommended.
I found that more open area is needed to aid the flow of air.
With this grate, about one watt of electricity is need to power the
gasifier in operation.

Here is your burner:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/006.pdf
The 4.5 mm openings that you recommend work well.
I tried other diameters, and they do not work.

Here is the burner housing:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/007.pdf
 A wooden handle is attached to it.

Here is the final combustor with burner grate:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/008.pdf
This part is embedded in the counter-top.
In this design, a cook can remove the gasifier while leaving the pot above
it in place.

Here is the complete 150 gasifier:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/009.pdf
It is light-weight (about 5 kg's) and mobile.
Since it is mobile, the gasifier can be filled and lit, as well as emptied
of biochar, outside of the kitchen area.

Here is the gasifier enclosure or counter-top:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/010.pdf
This can be constructed cheaply in brick and concrete, or more expensively
in kitchen tiles.
The great majority of Vietnamese cook on counter-tops mounted against a
wall.
A small door should be placed in front of the enclosure.

Here is a drawing of the burner, burner housing and final combustor:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/011.pdf
In this drawing the counter-top is not shown.
Note the 2 mm gap that allows air to enter.
Such a gap also represents the minimal clearance needed to insert the
gasifier under the counter-top.
If this gaps lets in too much air,
then a flat section of wire mesh could be placed at the top of the final
combustor to restrain the flow of air.
Some sort of a wire mesh will be needed in any case to catch cinders.

Here is a drawing that shows how all parts come together:
http://dl.dropbox.com/u/22013094/150%20Gasifier/Dwg2/012.pdf

I am now making the molds to fabricate many of the above parts.
These molds can greatly reduce the manufacturing cost.
I intend to sell these parts to gasifier installation and service centers
at my cost.
At the same time they are free to make whatever they might somehow manage
to make more cheaply than I.
I do not intend to recover the cost of the molds.
I hope to sell a complete 150 gasifier in stainless steel for less than $30
US (my fabrication cost).
This of course does not include the cost of the counter-top.

Next week we will set up a gasifier and enclosure in a modern kitchen.

It would be great if we could get a lot more people involved in the
on-going, open-source design of your 150 gasifier.
I consider all of the above to be very much your gasifier,  since nothing
in essence has really changed.
It is my hope that your gasifier will make it even into the most modern
kitchens in the world.

Many thanks.
Paul

On Sat, Mar 17, 2012 at 12:23 PM, Paul Olivier <paul.olivier at esrla.com>wrote:

> Alexis,
>
> Here is the drawing of your burner:
> http://dl.dropbox.com/u/22013094/150%20Gasifier/Drawings/005.pdf
> Here is the drawing of the burner housing:
> http://dl.dropbox.com/u/22013094/150%20Gasifier/Drawings/006.pdf
> The housing is not easy to make without large pressing equipment.
>
> The housing is placed over the burner.
> The two parts are welded together at the four points where they touch.
> http://dl.dropbox.com/u/22013094/150%20Gasifier/Boiling/IMG_1024a.JPG
>
> 446 stainless, as the drawings suggest, is too expensive.
> Making both parts in cast iron could be considered.
> But cast iron normally involves a considerable thickness.
>
> I foresee a third part that fits above the burner housing.
> This part is embedded within the counter-top.
> This third part restrains the flow of excess air, and it shields the
> flames from wind.
>
> Thanks.
> Paul
>
> On Sat, Mar 17, 2012 at 9:16 AM, alexis belonio <atbelonio at yahoo.com>wrote:
>
>> Hi Paul,
>>
>> I agree with your statement!  Let others benefit from your work!
>>
>>
>> "If Alexis Belonio agrees, I could also make available drawings of the
>> burner and burner housing."
>>
>> If you can make  it to share your work, that would great!  You will
>> harvest soon from that!
>>
>> God sees your heart and that is the most important in everything we do!
>>
>> Thanks a lot!!
>>
>> Alexis
>>
>> --- On *Sat, 3/17/12, Paul Olivier <paul.olivier at esrla.com>* wrote:
>>
>>
>> From: Paul Olivier <paul.olivier at esrla.com>
>>
>> Subject: Re: Belonio burner top on TLUD stoves was Re: [Stoves] radiant
>> heat capture, total heat measurement
>> To: "Paul S. Anderson" <psanders at ilstu.edu>
>> Cc: "Discussion of biomass cooking stoves" <
>> stoves at lists.bioenergylists.org>, "Corey Berman" <bizurman at gmail.com>,
>> zong at ilstu.edu, "Hugh McLaughlin" <wastemin1 at verizon.net>, "Bob
>> Fairchild" <solarbobky at yahoo.com>, "Alexis Belonio - Philippines" <
>> atbelonio at yahoo.com>, "Chua He" <chuazh at gmail.com>
>> Date: Saturday, March 17, 2012, 6:45 AM
>>
>>
>> Paul Anderson,
>>
>> I see no reason why the Belonio burner with a burner housing would not
>> work on a natural draft unit.
>> The only concern that I have is not what happens at the burner, but what
>> happens within the reactor.
>> If the reactor does not emit too much CO2, the burner and housing should
>> work quite well.
>>
>> I will soon start mass-producing these two items in stainless steel,
>>  and I will sell them at cost to anyone who wants to experiment with them.
>> If Alexis Belonio agrees, I could also make available drawings of the
>> burner and burner housing.
>>
>> Over this weekend I will build a counter-top to receive the 150 gasifier.
>> This is what it will look like (all parts in sequence):
>> http://dl.dropbox.com/u/22013094/150%20Gasifier/Jpegs/JP2/001.jpg
>> http://dl.dropbox.com/u/22013094/150%20Gasifier/Jpegs/JP2/002.jpg
>> http://dl.dropbox.com/u/22013094/150%20Gasifier/Jpegs/JP2/003.jpg
>> http://dl.dropbox.com/u/22013094/150%20Gasifier/Jpegs/JP2/004.jpg
>> http://dl.dropbox.com/u/22013094/150%20Gasifier/Jpegs/JP2/005.jpg
>> http://dl.dropbox.com/u/22013094/150%20Gasifier/Jpegs/JP2/006.jpg
>> http://dl.dropbox.com/u/22013094/150%20Gasifier/Jpegs/JP2/007.jpg
>>
>> Thanks.
>> Paul
>>
>>
>>
>>
>> Thanks.
>> Paul Olivier
>>
>> On Fri, Mar 16, 2012 at 11:07 PM, Paul S. Anderson <psanders at ilstu.edu<http://mc/compose?to=psanders@ilstu.edu>
>> > wrote:
>>
>> Dear all,
>>
>> Paul Olivier commented:   (full message is still below, with link to a
>> photo)
>>
>>  ..... which has always led me to wonder
>>  why the Belonio burner hole pattern was not adopted on natural draft
>> units.
>> If a burner housing were added, I think the unit I experimented with would
>> work much better.
>>
>>
>> Paul O. raises an excellent point.  I think that the moderate complexity
>> of the Belonio hole pattern and secondary air inlet (contrasted to simple
>> concentrator hole) has kept me and probably most others from experimenting
>> with it.  Perhaps we incorrectly associated it too much with the forced air
>> (Fan Assisted = FA) aspects of Belonio's rice husk gasifiers.
>>
>> Very little is known about the tops of TLUDs except that some amount of
>> constriction is needed to force the mixing of air and gases.
>>
>> I hope that the engineers (such as Bob Fairchild and student engineers)
>> and others who are now working on TLUD stove issues will seriously consider
>> the Belonio top and related enhancers of combustion of the gases.
>>
>> Paul    (Paul A.; not to be confused with Paul O.)
>> --
>> Paul S. Anderson, PhD
>> Known to some as:    Dr TLUD      Doc      Professor
>> Phone (USA): 309-452-7072   SKYPE: paultlud   Email: psanders at ilstu.edu<http://mc/compose?to=psanders@ilstu.edu>
>> www.gtz.de/de/dokumente/**giz2011-en-micro-gasification.**pdf<http://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 Paul Olivier <paul.olivier at esrla.com<http://mc/compose?to=paul.olivier@esrla.com>
>> >:
>>
>>  Kevin,
>>
>> You say:
>> *# OK!! A 50% reduction in boiling time is very significant.
>> What can you now tell us that will enable us to apply it to other stoves
>> and combustion conditions?*
>>
>> I once did an experiment in which I made the 150 Belonio about half its
>> original height.
>> I then filled it with chunks of wood and put a Belonio burner on top.
>> This was a natural draft unit without a fan.
>> This is what it looked like:
>>
>>
>>  http://dl.dropbox.com/u/**22013094/150%20Burner/**Image2097.jpg<http://dl.dropbox.com/u/22013094/150%20Burner/Image2097.jpg>
>>
>>
>>  But looking back on this, I see that there were so many problems with
>> this
>> burner,
>>  even aside from the fact that it had no burner housing.
>>
>> You raise an interesting question, though, which has always led me to
>> wonder
>>  why the Belonio burner hole pattern was not adopted on natural draft
>> units.
>> If a burner housing were added, I think the unit I experimented with would
>> work much better.
>> The central problem that I see with a natural draft unit is an uneven
>> upward flow of primary air.
>> At times too much CO2 is created, and some burner holes lose their flames.
>> Also I would imagine that the inlet of primary air has to be strictly
>> control to get a consistent outlet of gas at the burner.
>>
>> A natural draft TLUD is very complicated,
>>  and I truly marvel at those who get them to work on such a broad variety
>> of fuels.
>>
>> Thanks.
>> Paul
>>
>> Thanks.
>> Paul
>>
>>
>>
>> ------------------------------**------------------------------**----
>> This message was sent using Illinois State University RedbirdMail
>>
>>
>>
>>
>>
>> --
>> Paul A. Olivier PhD
>> 27C Pham Hong Thai Street
>> Dalat
>> Vietnam
>>
>> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
>> Mobile: 090-694-1573 (in Vietnam)
>> Skype address: Xpolivier
>> http://www.esrla.com/
>>
>>
>
>
> --
> Paul A. Olivier PhD
> 27C Pham Hong Thai Street
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
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-- 
Paul A. Olivier PhD
27C Pham Hong Thai Street
Dalat
Vietnam

Louisiana telephone: 1-337-447-4124 (rings Vietnam)
Mobile: 090-694-1573 (in Vietnam)
Skype address: Xpolivier
http://www.esrla.com/
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