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Post by Vortex on Nov 18, 2016 8:09:59 GMT -8
Wow, that's a monster stove you're building there, Eric. It's going to take some feeding.
I'm very jealous of all that engineering kit of yours.
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Post by ericaus on Nov 18, 2016 11:42:18 GMT -8
Hello pinhead, thanks for the reply. I'll be using insulating fire bricks, not the dense type, so I was hoping that they would contain the heat enough. The firebox is designed to allow 75mm wide bricks on the side and 100mm bricks to form the arch. Do you think I'll need extra?
Eric
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Post by ericaus on Nov 18, 2016 11:50:26 GMT -8
Wow, that's a monster stove you're building there, Eric. It's going to take some feeding. I'm very jealous of all that engineering kit of yours. Hello vortex, Yes I was a little concerned about the wood supply situation, but we had a major storm recently and a heap of mature eucalyptus came down around the area and I was lucky enough to make a big collection. I'll post a picture of the pile. I'm hoping it will last for several years. The holes in the plates around the circumference will take 38mm stainless tubing, so it should make for a real feature heater. The next step with the barrel is to get it sand blasted and painted in flat black. I then need to get it through the back door and stand it up. That's going to be the tricky bit!!! i1204.photobucket.com/albums/bb404/erickendall1/2016-11-19%2006.23.45_zpsajtyv2e6.jpg |
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Post by matthewwalker on Nov 18, 2016 12:33:42 GMT -8
Holy crap, not only a 10" batch, but now I have to picture it stuffed with eucalyptus. Good lord that thing is going to melt a hole in the earth.
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Post by ericaus on Oct 5, 2017 0:27:44 GMT -8
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Post by satamax on Oct 5, 2017 2:12:04 GMT -8
Eric, you're nootz, i love it.
Will it have mass? I haven't re read the whole thread.
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Post by ericaus on Oct 5, 2017 12:41:12 GMT -8
Hi Max,
The bell and firebox is 12mm thick and there will be 24 lengths of 30mm diameter bar stock holding the top and bottom flange plates to the bell. The flange plates themselves are laser cut from 20mm material. So in total there will be over 2000kgs. of steel in the construction. I am thinking this will provide adequate mass.
Eric
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Post by drooster on Oct 5, 2017 13:18:15 GMT -8
I love the flange ring and the bolt collars, great-looking project! You might want to stand the beast up and just build a new house around it ... |
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Post by woodrascal on Oct 6, 2017 0:24:30 GMT -8
This beast looks amazing Eric- good work and please keep us updated with progress reports.
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Post by satamax on Oct 6, 2017 5:11:43 GMT -8
Hi Max, The bell and firebox is 12mm thick and there will be 24 lengths of 30mm diameter bar stock holding the top and bottom flange plates to the bell. The flange plates themselves are laser cut from 20mm material. So in total there will be over 2000kgs. of steel in the construction. I am thinking this will provide adequate mass. Eric Let's hope it keeps heat for a long time. |
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Post by DCish on Oct 8, 2017 19:49:35 GMT -8
Looks like you have abundant mass. However, steel is very highly conductive - soaks up heat quickly, but gives it up quickly too. My worry would be that you'd get lots of quick heat with relatively short storage. Hope things work out well for you, looking forward to seeing how things progress.
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Post by ericaus on Oct 9, 2017 0:11:04 GMT -8
Looks like you have abundant mass. However, steel is very highly conductive - soaks up heat quickly, but gives it up quickly too. My worry would be that you'd get lots of quick heat with relatively short storage. Hope things work out well for you, looking forward to seeing how things progress. Yes you could well be right DCish. I'm certainly no expert on the topic. I'm going to see how it goes initially and maybe install an extractor fan at the very top of the bell to direct the hot air down and around the sides. What do you think? Eric |
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Post by satamax on Oct 9, 2017 1:32:57 GMT -8
Ericaus, if ever you dont have enough mass. You could pile firebricks inside, and hold them against the walls with hoops.
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Post by ericaus on Oct 9, 2017 3:14:20 GMT -8
Ericaus, if ever you dont have enough mass. You could pile firebricks inside, and hold them against the walls with hoops. Thanks for the suggestion Max. I probably could do that below the firebox without too much of a problem. I'll see how it goes initially. Thanks. Eric |
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Post by DCish on Oct 9, 2017 5:37:21 GMT -8
Ericaus, if ever you dont have enough mass. You could pile firebricks inside, and hold them against the walls with hoops. Thanks for the suggestion Max. I probably could do that below the firebox without too much of a problem. I'll see how it goes initially. Thanks. Eric The brick inside the bell seems like it should work. Or you could add some sort of lip or ledge low down on the outside that could support bricks (plain red brick would be fine, it wouldn't be exposed to the flame path). Then you could add courses of brick to soak up and store heat as needed. Each course of brick encircling the bell could be dry stacked and held snug to the bell with a metal band of some sort, perhaps. Heat passes through brick at about an inch an hour, so you could vary the thickness to vary the heat storage / discharge (maybe bricks on edge or two deep low down, with single layers higher up). With the brickwork on the exterior, you could progressively tune the mass for immediate vs stored heat as dictated by real-world experience. Of course, this assumes that the bell assembly is on a robust enough foundation to hold the extra mass. |
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