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ECN publication
High-efficiency los-NOx ceramic radiant burners
Published by: Publication date:
ECN 1997
ECN report number: Document type:
ECN-RX--96-069 Article (scientific)
Number of pages:

Published in: To be presented at the 4th European conference on industrial furnaces and boilers, Esphinho, Porto, Portugal, April 1-4, 1997 (), , , Vol., p.-.

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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