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Title:
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High-efficiency los-NOx ceramic radiant burners
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Author(s):
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Published by:
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Publication date:
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ECN
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1997
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ECN report number:
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Document type:
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ECN-RX--96-069
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Article (scientific)
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Number of pages:
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12
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Published in: To be presented at the 4th European conference on industrial furnaces and boilers, Esphinho, Porto, Portugal, April 1-4, 1997 (), , , Vol., p.-.
Abstract:
Ceramic radiant burners are premix gas burners that convert part of thecombustion heat into infrared radiation. In this process the flame is cooled
and, as a result, a small amount of NOx is produced. The radiant efficiency
decreases with heat input from about 30% at 100 kW/m2 to less than 10% above
500 kW/m2. If the combustion air is preheated or enriched with oxygen,
radiant efficiencies of 45% can be reached with ECN ceramic foam burners. The
NOx-production remains low. The maximum surface temperature may reach 1100C,
which corresponds to a radiation intensity of 160 kW/m2. 8 figs., 2 refs.
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