This study compared the traditional and modified Bunsen burners for the Saudi LPG/air mixture, identifying operation problems and successfully overcoming them. The researchers also applied a MATLAB algorithm for flame image processing and measuring laminar burning velocity, obtaining significant results.
The equivalence ratio ranges were found between 22.77 and 42.93 for the Saudi LPG/air mixture using a traditional Bunsen burner. An operation problem was found with a traditional Bunsen burner for the Saudi LPG/air mixture, especially in a lean mixture. Therefore, a Bunsen burner was successfully modified to overcome the limits of operation with different mixtures of Saudi LPG/air and a stable flame was obtained. The equivalence ratio ranges were found between 0.68 and 1.30 using the modified Bunsen burner. A premixed flame was used for the modified Bunsen burner. A MATLAB algorithm was successfully applied to flame image processing and measurement of laminar burning velocity. The laminar burning velocity was determined to be approximately 35 +/- 0.91 cm/s under stoichiometric conditions using the modified Bunsen burner for the Saudi LPG/air mixture. The half-cone angle of the flame was found to be 16.20 +/- 0.76 degrees. The minimum flame height was observed to be 21.50 +/- 0.22 mm above the Bunsen burner exit.
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