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Post by smartliketruck on Jan 28, 2017 10:19:52 GMT -8
Okay, I'm liking the idea of playing around with trying to make a hard coating on insulated firebrick. So far my ideas are trying water glass, and clay slip. Anybody else have ideas on things to try?  How about Karls salt impregnation? karls-geopolymers.proboards.com/post/114/threadAnyone have an extra piece of IFB to give it a try? |
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Post by matthewwalker on Jan 28, 2017 12:28:03 GMT -8
Jesus Christ. You guys. Stop it. You are going to create another system that will fail, and do exactly what you are worried about. Any layer will only be as strong as the layer underneath. You are creating a solution for a problem that doesn't exist.
Okay. Had to say that. Carry on with the speculating.
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Post by smartliketruck on Jan 28, 2017 14:10:06 GMT -8
Prime example of why I wish forums had adopted tree like threads as in newsgroups of old. That way off topic sidebars like this can carry on without detracting from the primary thread. With the current flat view the only option is for a mod to move the posts to their own threads or delete.
That being said, this post is entirely off topic and I won't be offended at all when a moderator rightly clicks the delete button.
Sorry Matt!
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Post by satamax on Jan 28, 2017 21:13:48 GMT -8
My local supplier has a bit on their website that says "Firebrick is made from crushed firebrick" - which begs the question where did the first firebricks come from?  Well, some firebricks are made out of special clay. I don't dare to say fireclay. I think all clay has some resistance to fire, as it's been fired before. But firebricks can be made of roof tiles, firebricks etc, crushed into a grog. Those guys make bricks without grog iirc. www.lepanyol.com/terre-blanche-larnage-fabrication.cfmwww.lepanyol.com/terre-blanche-larnage-carriere.cfmI have 2.4 tons of those. And they're realy superb. |
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Post by DCish on Jan 30, 2017 5:40:32 GMT -8
Hah! Starting with your earlier post, it's been a while since anyone accused me of *under*thinking anything! Anyway, I'm not ready to dismiss this line of thought without at least some rudimentary playing around. The way I see it, if you lay a piece of plywood down on a sandy beach, the properties of the sand are unchanged, but by distributing the pressure you can change how you interact with it. And I agree on the likelihood of it being a sacrificial layer. I rather like that idea. If I can slap on a layer of slip at the start of every season and the underlying IFB remains largely intact, to me that would be a win. |
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Post by DCish on Jan 30, 2017 6:06:18 GMT -8
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Post by DCish on Jan 31, 2017 18:54:35 GMT -8
Set up a quick burn tonight. Happy with the outcome. This is the result of throwing a bunch of dry bamboo on top of a bed of coals. I like how the vortex formed quickly even at low burn. plus.google.com/107386714429613343642/posts/hnD8LqyHB1AEdit: this burn used my vortex generator in horizontal layout, in case that wasn't clear. Slot was 2x7. |
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Post by independentenergy on Jan 31, 2017 20:57:25 GMT -8
an oval section seems the best solution
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Post by Vortex on Feb 1, 2017 2:12:20 GMT -8
Seems the logical shape to induce the double vortex. That got me thinking - I have a hydro-electric generator, the parts that absorb the energy from the water look like this below. The ridge in the middle is designed to split the jet - Maybe we should do the same behind the port.  |
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Post by DCish on Feb 1, 2017 4:16:51 GMT -8
an oval section seems the best solution Yes, an oval seems logical, and much easier to make than what I did. Just smoosh a bit of pipe at the slot, and voila. Seems worth a try. |
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Post by DCish on Feb 1, 2017 4:23:14 GMT -8
Seems the logical shape to induce the double vortex. That got me thinking - I have a hydro-electric generator, the parts that absorb the energy from the water look like this below. The ridge in the middle is designed to split the jet - Maybe we should do the same behind the port. Sweet! If you ever get around to casting a shape like that, I'd love to see video of the burn! As an aside, I'd love to see pics of your hydro setup if you have the inclination -- maybe a thread in the "off topic" area? |
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Post by Vortex on Feb 1, 2017 5:29:19 GMT -8
If you had a handful of clay spare, maybe you could try adding a ridge down the middle of the back of your oval riser, just behind the port, would be interesting to see how it affects it.
No problem, I'll make a hydro thread in the off topic section for you.
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kpl
New Member
Posts: 47 
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Post by kpl on Feb 1, 2017 6:28:49 GMT -8
has anyone tried the opposite kind of double vortex? Two narrow slots feed to riser, but center part is blocked, where reflected streams meet.
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Post by DCish on Feb 1, 2017 6:34:46 GMT -8
Good point, Vortex. Will see if I can get a round tuit. If it works, it might be another tweak that allows lower volume immediately after the port, thus keeping it tight enough for good mixing at low burn while still supporting good flow and mixing at high burn rates. |
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Post by DCish on Feb 1, 2017 6:37:12 GMT -8
has anyone tried the opposite kind of double vortex? Two narrow slots feed to riser, but center part is blocked, where reflected streams meet. Seems plausible, but with significant added complexity. More slots to build, figuring out how to ensure equal gas flow to both slots, secondary air to two slots... |
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