RT Journal Article ID 19e7285c06764279 A1 Spangelo, O. A1 Slungaard, T. A1 Engebretsen, T. A1 Sonju, Otto K. T1 DEVELOPMENT OF A LOW-NOx SWIRL BURNER FOR GASEOUS FUELS JF International Journal of Energy for a Clean Environment JO IJECE YR 2006 FD 2007-03-23 VO 7 IS 3 SP 203 OP 220 AB A research and development project has resulted in a new low-NOx, fan-driven burner concept called the Swirl Burner. This patented concept is in the final stages of development. The Swirl Burner is a partially premixed, fan-driven gas burner with internal flue gas recirculation and possibilities for staged fuel and air supply. Gas mixing and flame stabilization are provided by a swirl-generating device with aerodynamically shaped wanes positioned in an annular airflow. Flue gas is recirculated into the combustion zone, providing a continuous ignition source. NOx emissions in the range 30−40 ppmvd at 3% O2 are measured for 100-200 kW with propane. Using methane as fuel, NOx emissions of about 20 ppmvd at 3% O2 are measured for 75−200 kW. CO emissions were kept below about 5 ppmvd. NOx and CO emissions were fairly constant over a wide range of fuel-air ratios. Similar results have also been obtained for a 20-kW burner and a 500-kW burner. In this article a detailed characterization of the 200-kW Swirl Burner and the experimental results will be presented. PB Begell House LK https://www.dl.begellhouse.com/journals/6d18a859536a7b02,4a467dbf7cf032fb,19e7285c06764279.html