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TLUD fired outdoor boiler

 
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Inspired by Martijn Macaopino's indoor TLUD build I have started building a boiler.
The design takes advantage of the heat exchanging central chimney that gas fired water heaters use.

Here are some photos of what I have so far:


20210912_203952.jpg
A top view of the TLUD sitting inside the "firebox" As with Martijn's design the tlud consists of a removable cartridge.
A top view of the TLUD sitting inside the "firebox" As with Martijn's design the tlud consists of a removable cartridge.
20210906_191336.jpg
The heat exchanging tank.
The heat exchanging tank.
 
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This looks promising.  Despite being actively involved in making biochar for years, I can't really say that I have effectively managed to use the heat for a very useful purpose.  I experiment with cooking small vegetables, but I am intrigued by the possibilities that some of you have developed.  Thanks for posting.  As H. Ross Perot would say, show me what you got-I'm all ears!

John S
PDX OR
 
William Bronson
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Ive cast a heat riser from perlite and calcium aluminate cement.
Despite motor oil and and plastic, it does not want to release.
Its probably to dense anyway, with too much cement too little perlite,  too thick altogether.
20210917_184728.jpg
Next time I'll line it with cardboard instead of plastic
I'll line it with cardboard next time.
 
William Bronson
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Location: Cincinnati, Ohio,Price Hill 45205
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forest garden trees urban
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With a lot of finangling I able to remove massive heat riser from the boiler.
I may try a refractory heat riser again in the future,but its one innovative to far right now.
I will replace it with a steel can, or perhsps a stainless steel bain marie with the bottom cut out.
Mean while I have a prop for a B.C. comic and I've added legs to the boiler.

20210921_161619.jpg
I just need a log to go through the middle.
I just need a log to go through the middle.
20210921_181158.jpg
Wooden legs!? Yeah, lets see how well the insulation works
Wooden legs!? Yeah, lets see how well the insulation works
 
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