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Post by Solomon on Feb 21, 2021 22:00:56 GMT -8
If I get the chance to play with it, I will.
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Post by Solomon on Mar 16, 2021 7:16:40 GMT -8
Upon closer inspection of the heat riser, it is clear why it cracked. The inner 1/2" to 3/4" thickness of the riser has shrunk. That's why it cracked. It clearly over heated. This was pre-cured ceramic fiber and when it got that hot, it shrunk. Thus, when it cooled, the contraction caused the cracking.
I'm nearly done with the split barrels for the bench, there is a small chance of a test firing later today.
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Post by josephcrawley on Mar 16, 2021 13:29:55 GMT -8
Have you made any more test cores?
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Post by pigbuttons on Mar 18, 2021 8:03:04 GMT -8
Right, but you're not going to get the temps without the insulation. Two inches of CFB and 2 inches of firebrick are entirely different animals. So, going for maximum NOx output? This from a boiler specific website Thermal NOx is formed when nitrogen and oxygen in the combustion air combine with one another at the high temperatures in a flame. Thermal NOx makes up the majority of NOx formed during the combustion of gases and light oils. The rate of NOx formation generally increases significantly above 2,800°F flame temperature. Do we really expect temps that high over long periods of time? Be real.
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Post by Solomon on Mar 18, 2021 17:20:14 GMT -8
Have you made any more test cores? Nope. Put this one back together and now in permanent installation. No cob yet, I'll be posting about it soon. It's much tamer now, I have not been able to get it much above 1400F.
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