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Mark Cunningham

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since Dec 15, 2018
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Recent posts by Mark Cunningham

David Baillie wrote:premium side and in my opinion its a superior design to the imbert units.



I am on DOW.  I've been debating the membership.  

David Baillie wrote:If you peruse things you will notice a definite line in the sand. The more south you go the more likely they will use raw wood gasifiers as you go north into the wood heating regions charcoal starts to dominate. That is exactly as it worked out in Europe during the second world war as well. Sweden, Norway charcoal france Wood, Germany in the middle.



That is an interesting evolution.  I wonder where the equatorial tropics would fit?  High heat / humidity and soft woods.   There's a fella in Thailand producing charcoal reactors.  Van Looken.
5 months ago

David Baillie wrote:Think of it as splitting the gasification process into two parts. Burn down the wood for heat in a stove in the greenhouse then use the cooled and graded coals to do work.



That is a perspective I have not viewed pryolysis from.  Thank you.

I was noodlin on distilling water with the waste heat.  I have a large set of NiFe cells and they are thirsty.   But now I'm thinking griddles, ovens, maybe even kiln's.

I thought that it was possible to run an Imbert design off of either wood or charcoal.   Opinions?

I am most following Flash's footsteps.  He uses materials I can get here.  In his last offering he open-sourced the full automation plans.  

The All Power folks are the wizards.  No doubt about that, but in my opinion they suffer from the same illness as most of academia.  "Over Com-bob-ulation".  In perfecting the process they made the device un-achievable by the common person.

Simple is robust.
5 months ago

David Baillie wrote: A video... one of mine



Nice.  Simple is robust.  Here is a neat charcoal system I've had my eye on.

5 months ago

Mike Jay wrote:Mark - Thanks for the list of YouTube videos!!!  That will keep me busy for quite a while!  I'm starting to think wood gas isn't as impossible as I did three hours ago



You are most welcome.   Beyond building a gasifier ..... the most salient points that I have found are ....

1.)  There are lots of different reactor designs.  Some have inherent flaws.  Updraft and Stratified downdraft (FEMA) are notorious dirty gas producers.  The Imbert design, (Flash001usa, Mazdalorean, MrTeslonian), appear to produce a much cleaner fuel.    My fuels are all soft, punky, wet tropical woods.  They consider Pine a hardwood here.  So  I may have to do extra work to compensate for that.

2.)  I am attempting a wood versus a charcoal gasifier.  I have seen math that states that you lose half of your energy translating from wood to charcoal.  And you have the added smoke, tar, and wood vinegar to deal with.    But I may be forced into charcoal if I cannot work out the details.

3.)  Your hearth must match the vacuum of your load.  Too small or too large .... you don't crack all of the tars and gum up your engine.  That calculation is discussed ad-nauseum in the wood gas sub-culture and there is some wiggle room in those dimensions.   Short and skinny.  Know what you need to run then build for it.

4.)  Quality of fuel is important.  Size and moisture content.  Most of the serious folks have developed infrastructure to assist in standardizing their fuel.  But pretty much anything that burns can be used.  One fella used plastic trash and almost blew himself up it was so powerful!


Please keep me in your loop.  Maybe together we can work out bugs.
5 months ago

Eric Hanson wrote:Is this a theoretical number or an actual recorded rate?



Mark Cunningham wrote: I've read of conversion rates exceeding 60 -> 70%.

5 months ago

Mike Jay wrote: Wood Gas: Heat Engine: TEG (Thermal Electric Generator): Steam Engine:




This is my current project.  I am still in the research / design phase.  My "off" solar season is a Monsoon and lasts 6 months.  I've looked hard at all of the same technologies.  Here is my take on it.

Stirling engines look great on paper.  But are pretty damn hard to implement.  Especially in isolated / rudimentary environments like I am in.   The materials, skills, and technology are not easily available.

Steam.  By far the most efficient.  I've read of conversion rates exceeding 60 -> 70%.  My uncle had several restored steam tractors that would make excellent farm scale generators.  But ..... right or wrong ...... that home scale technology is no longer widely available.

Wood Gas.  Old, previously implemented, and stable technology.  Can be built from repurposed materials.  Fuel is ubiquitous.  Especially if you can do pelleting.  

Safety factors are inline with other technologies. Fabrication costs are achievable for the motivated.  Fuel produced can be blended with A.D. biogas.  Like A.D. fuel CANNOT be easily compressed.  So it is a "use it or lose it" scenario.

Significant waste heat is available for other uses.  In my case distilling water for battery banks.

MOST importantly the fuel produced can be fed into EXISTING petrol and diesel engines WITHOUT serious modification to the engine.  That means we can use our existing infrastructure while we work our butts off to develop an open-source, family-scale energy generating technology. (The guerrilla thumbs his nose at the oligarchs).


Here is the information necessary for an informed decision.


https://www.youtube.com/user/flash001USA/videos    ..... in my opinion this is the system to attempt.

https://www.youtube.com/user/MrTeslonian/videos
https://www.youtube.com/user/mazdalorean/videos
https://www.youtube.com/user/brentbobbaumer/videos
https://www.youtube.com/user/plasmacutter1/videos
https://www.youtube.com/user/CNCmachiningisfun/videos
https://www.youtube.com/channel/UC8_chLoN68OMEUXl4VlI7Gw/videos
https://www.youtube.com/user/joshuaburks/videos


The "Drive on Wood" forum is the best forum for interaction.  Very good thread on small engines.


Hope this helps.

5 months ago

Dale Hodgins wrote: investigate carefully



My Asawa and I are following this with great interest, who needs Provinciano or Wow-Wow-Wee.  Thank you for posting it.


Our bona-fides.  27 years ago I felt exactly as you do.  I made the same observations, and formulated identical conclusions .....

We have since evolved into guerillas.  We adopt what ever works, where ever we can.  That led me here and this thread.


In the spirit of sharing, I'd like to offer a few notions.


If you don't know why to tether animals, then your not ready for livestock.

If you don't understand "tampo", then your not ready for a Filipina.

If you don't understand "utang na loob", or "hiya", then your not ready for pinoy prime-time.


To be honest we are amazed that you have not been sold to Abu Sayyaf.


May I suggest "In our Image" by Stanley Karnow.  


As with any source of information it needs critical and contextual filtering.  But it is full of insight.  Read some of the works in the references section.

Who knows it might save some trouble.
5 months ago
May I make a suggestion?

Why don't you seek out those of us who live in, and have experience with, bariotek provinces?

Might help you avoid future tampo, nose-bleed,  upak.

Ginusto mo yan eh.


6 months ago