Abstract: “Experiments and computations were conducted on infrared radiant burner operated on natural gas/air mixtures. The burner had not porous media and consisted of plates (recuperative elements) of heat-resistant metal alloy (Fe base, Cr 25%, Al 6%) with high thermal conductivity. The height of the recuperative elements system varied from 18 mm to 70 mm. The Al2O3 coatings were tested and found effective for covering the surface of the recuperative elements in burners. The operating surface temperature of recuperative elements coated with aluminum oxide reached values of 1450°C. Stable combustion mode is implemented in the range of specific burning power (firing rate) values from 2.8 MW/m2 to 5.3 MW/m2 per unit area of the gas stream cross-section. The maximum power of the burner is 16 kW with a flow cross-section of 30 cm2. The concentration of nitrogen oxides in the combustion products is up to 14ppm, the concentration of carbon monoxide is up to 20 ppm with an excess air coefficient (air”

Keywords: infrared burner, natural gas, recuperative element, coating, surface combustion, firing rate, surface temperature, emissons