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A series of experiments were done on a vertical EV burner with a constant coflow air of 873 L /min in order to investigate the impact of fluidics insertion technique on the temperature field and flame structure. The flow rates of fuel (LPG/ Ar) and air were measured using calibrated rotameters. The different volume ratios of the fuel constituents were admitted via three solenoid valves at the entry section of each stream prior to mixing and monitored using a lab view program. The axial temperature profiles at different operating conditions were measured using a bare (type S) thermocouple. Flame images were obtained, before and after fluidics insertion using a high resolution digital camera. The experimental program aims at identifying and analyzing the changes in flame characteristics (flame length, axial profiles of mean gas temperature, NOx concentration and overall combustion efficiency) resulting from the insertion of fluidics while considering different proportions of the fuel constituents. The results obtained indicate the following: it was noticed that in most cases of pure LPG only, and other mixtures of argon the images shows increase in both the length and luminosity of the flame as a result of higher degrees of swirl due to the fluidics insertion while the temperature profiles of the different flames were changed. It was indicated that NOx trend was decreased by 50% while the combustion efficiency was improved by 2.5%.

the international conference on applied mechanics and mechanical engineering

INVESTIGATION OF THE INFLUENCE OF FLUIDICS INSERTION TECHNIQUE ON ARGON GAS ADDITIVES TO LPG ON THE TURBULENT LEAN PREMIXED FLAME CHARACTERISTICS FOR EV BURNER