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Brick Bell Shop Heater  RSS feed

 
gardener
Posts: 1574
Location: latitude 47 N.W. montana zone 6A
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And Again ;  a little more.  Got smart and put the barrel to work in its new job.... not quite as hot as its going to get but it sure captures more of the propane heat for me.
Got the exhaust outlet built in this afternoon as well. I had a few oversize firebrick 6 x 24 I brought home from the saw mill. A broken one was just right to bridge the outlet.  10" w x 9" T
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Getting there slowly but surely... thanks for all the pictures.
 
Posts: 38
Location: Western central Illinois
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Really looking great!
 
gardener
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Location: Upstate NY, zone 5
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I think you'll be happy with your brick bell. The back of my bell which will abut the future stone chimney is one brick thick (2 1/2", old red brick and firebrick), and throws heat within an hour from starting the fire. Your heat-catching protrusions may help speed the process.
 
thomas rubino
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Thanks guys;  Its a slow process but its getting there.  Wish I had started earlier in the summer...  cold out there!
 
thomas rubino
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Below freezing all day today...  only got about 3 hrs work in on this before I called it a day.
Got around the corner and got the ash cleanout door fit.

Not to sure if my bricks are drying or freezing... :)

Couldn't help but throw in a picture of our Hudson.... maybe if the shops warm I'll work on it.
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My 1938 Hudson
 
Posts: 240
Location: Wellington, New Zealand
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Is that a gas burner attached to the gas bottle?
 
thomas rubino
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Yup , Propane heater, got it under the barrel ,so that heats up as well.  I was pointing it at bricks to dry them out BUT...  its cold out there. Rather have more heat for me!
 
pollinator
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Location: Penticton, Canada
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Hey Thomas,   A few questions for an inquiring mind....

1) When you built your exhaust outlet, how did you determine the size and shape?  I had heard that low and wide was the way to go....
2) How do you plan to cap your bell? Are you going to need pillars?
3) Just wondering if maybe it would be a good idea to cap the bell temporarily with a piece of cement backer board or something that would give you an idea of how it runs with different configurations - more or less pillars (to add/subtract ISA), dividing walls to make 2 or even 3 bells?



 
thomas rubino
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Well Gerry, I never came across any recommended dimensions.  I reasoned it needed to be larger than 8" so I went 10" wide . The nine tall was the height of my firebrick. I kind of figure that if its badly wrong then Peter or Max (or maybe Gerry) would let me know. :)
I have an option to use 10" heavy wall galv. pipe as my chimney, I haven't made up my mind yet, if I'll use it or 8" but I wanted to be sure my hole in the wall was big enough. I did consider putting a wall inside the bell so the hot gases coming down from the drum don't try to sneak out the chimney without first depositing their heat up top.

Capping has been on my mind quite a bit lately.  I hadn't even considered a temporary roof ... what an outstanding idea!!!  Hats off to you Sir !

My real plan is rather ambitious, and may change as I progress.
The small area behind the barrel will get a flat roof, I haven't determined at what height or of what material yet.
For the rest of the roof... I REALLY want to build an arched brick dome ... Like the batch box, Kirk built with the casserole door. I'll probably muck it up but... I just got to try.
I'm having great fun being an apprentice brick layer!

Now that outstanding idea of a temp roof...  I want to run off to Sandpoint rite now and get a couple of sheets of hardy board!   I could Fire it off early !!!  Whoo Hoo !  Like you say, see if it needs a second bell !! Get it drying out while I prepare my form for the arch!  I could sort of pick better weather before I open it back up !  WOW   I owe you a beer my friend!
 
gardener
Posts: 2919
Location: Southern alps, on the French side of the french /italian border 5000ft high Southern alpine climate.
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Thomas, 9x10 for an 8 incher?  That's plenty.  Sure you could have done 16X4 high. But who cares.

For your arch, use a saracen or catalan arch!



Or a nubian one!

Can't find a nice video. If you want to know more, ask Kirk!
 
thomas rubino
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Hey Max;  Great video ! You got to respect a master craftsman at work ! Those guys are amazing!
I however am no master craftsman.... I think a Saracen arch is a big enough challenge for the time being :)  You will know if I succeed or fail by the final photos of my new arch OR my new flat roof.
Those formless Nubians are really something as well.
 
Gerry Parent
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thomas rubino wrote:
Well Gerry, I never came across any recommended dimensions.  I reasoned it needed to be larger than 8" so I went 10" wide . The nine tall was the height of my firebrick. I kind of figure that if its badly wrong then Peter or Max (or maybe Gerry) would let me know. :)
I have an option to use 10" heavy wall galv. pipe as my chimney, I haven't made up my mind yet, if I'll use it or 8" but I wanted to be sure my hole in the wall was big enough. I did consider putting a wall inside the bell so the hot gases coming down from the drum don't try to sneak out the chimney without first depositing their heat up top.

Capping has been on my mind quite a bit lately.  I hadn't even considered a temporary roof ... what an outstanding idea!!!  Hats off to you Sir !

My real plan is rather ambitious, and may change as I progress.
The small area behind the barrel will get a flat roof, I haven't determined at what height or of what material yet.
For the rest of the roof... I REALLY want to build an arched brick dome ... Like the batch box, Kirk built with the casserole door. I'll probably muck it up but... I just got to try.
I'm having great fun being an apprentice brick layer!

Now that outstanding idea of a temp roof...  I want to run off to Sandpoint rite now and get a couple of sheets of hardy board!   I could Fire it off early !!!  Whoo Hoo !  Like you say, see if it needs a second bell !! Get it drying out while I prepare my form for the arch!  I could sort of pick better weather before I open it back up !  WOW   I owe you a beer my friend!



Yeah, I really like Kirk's batch box too. Pretty sure he used a slip form to hold up one arch of bricks, then slid it forward and made another arch...repeat, repeat until the entire arch is done.  I have made an earthbag structure years back and had 3 arches to make. The slip form worked great! ... at least for those that are not quite as skilled (like me) as those in the video. BTW, really inspiring, thanks Satamax!

Something to consider from Kuznetsov's writings on double bells:

"There is another remarkable feature of our “double bell” stove: ability not to loose efficiency during prolonged firing. It is known that the longer you burn the hotter walls of the stove’s channels and flues become. The hotter they become, the less heat they can absorb. In this case, temperature of exhausted gases rises, meaning that efficiency of the stove falls accordingly"

As I sip my morning coffee, all I can taste is that beer you 'gave' me!   :)
 
thomas rubino
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Today I set the barrel down on ceramic blanket in its final resting place.  Cut a strip of 1" thick blanket down to 1/2" and set it in the shallow groove that I carved in the brick. I'll mix up some fireclay ,sand and ash to seal it.
I also decided to build a dry stack wall, out of extra firebrick. Between the riser and the outlet.  It is not sealed but should keep the heat rising in the bell instead of flowing directly across to the outlet stack. I gave it a 9 x 8 passage at floor level and it will be open at the top IF I successfully build an arch as a lid. It also adds more mass and increases my isa win win!
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