Have any members upgraded the Combustion Chamber Bricks in there EKO Boilers. I you have, what changes have you noticed.
Yeah I got the new style lower blocks.I like them. Its alot easier to clean the ashes out,and it seems like the flame has more room to swirl so I do think they are an improvement.BulldogAcres said:Have any members upgraded the Combustion Chamber Bricks in there EKO Boilers. I you have, what changes have you noticed.
nofossil said:This thread covers some of my attempts. As with many things about gasifiers (and life in general), there's more to it than meets the eye.
sdrobertson said:nofossil said:This thread covers some of my attempts. As with many things about gasifiers (and life in general), there's more to it than meets the eye.
What did you end up using? I remember this old post, but I can't recall what you ended up with.
Cave2k said:There are some places advertising castable refractory rated to 300 degrees now. Worth the effort?
nofossil said:Cave2k said:There are some places advertising castable refractory rated to 300 degrees now. Worth the effort?
300 degrees? I'll just try plywood ;-)
Seriously, this is a topic of major interest for me. My brother cast the floor of his gasifier and had it baked in a kiln. It cracked in the first season. It's not ruined, and he's still using it, but I think that the temperature gradients in gasifiers create thermal stress that requires more than just a high temperature rating.
I'm eagerly awaiting any test data from anyone who tries this.
DaveBP said:Anybody out there tried simply putting a thin piece of refractory (like a tile) down where the flame jet hits the floor to take the brunt of the heat. Rather than finding a material that will hold up to the heat in a thick section, just a disposable liner that gets tossed every season or something? The gradient across a thin section might not be so stressful.
In my mind's eye is the sight inside of a porcelain kiln with a roaring gas flame hitting the bottom of the lowest kiln shelf and spreading out to the rest of the interior. I think those were silicon carbide but that was back 4 decades ago.
Got any old porcelain plates in a box somewhere?
barnartist said:I have begun to notice decay of the bottom of my nozzles. I am wondering how I will fix them when the time comes.
nofossil said:Cave2k said:There are some places advertising castable refractory rated to 300 degrees now. Worth the effort?
300 degrees? I'll just try plywood ;-)
Seriously, this is a topic of major interest for me. My brother cast the floor of his gasifier and had it baked in a kiln. It cracked in the first season. It's not ruined, and he's still using it, but I think that the temperature gradients in gasifiers create thermal stress that requires more than just a high temperature rating.
I'm eagerly awaiting any test data from anyone who tries this.
VeggieFarmer said:barnartist said:I have begun to notice decay of the bottom of my nozzles. I am wondering how I will fix them when the time comes.
I am also seeing similar degradation in the nozzle, mid-way through my third season. Instead of being rectangular, the two ends of the groove are flaring out such that the nozzle now looks like a dumbbell, with the fat ends being nearly twice the width of the original groove. Anyone else seeing this? Anyone attempted a replacement?
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