Thermal Characteristics Comparison between Normal Diffusion Flame and Concentric Inverse and Normal Diffusion Flame Burners in Ribbing Furnace | ||
| The Egyptian International Journal of Engineering Sciences and Technology | ||
| Articles in Press, Accepted Manuscript, Available Online from 18 January 2025 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/eijest.2025.336089.1306 | ||
| Authors | ||
| Ashraf Kotb* 1; Hany Elsayed Saad2 | ||
| 18 محمد رياض عبد القادر - مدينة نصر | ||
| 2Ain Shams University - Faculty of Engineering | ||
| Abstract | ||
| This investigation is accomplished experimentally to study the use of two different shapes of annular-ribs (triangle and square shape) on the flowrate of heat transfer, and combustion characteristics for both normal diffusion NDB and concentric inverse and normal diffusion CINDF flame TFB burner. The rate of heat transfer from LPG fuel flames in a cylindrical horizontal water-cooled furnace when the fuel is injected in the furnace axially was measured. In addition, A mathematical model for calculating the distribution of the local heat transfer rate from the flame to the furnace wall segments is used in the present study to compare both the measured value with calculated one. The results showed that; annular-ribs increases heat transfer across the furnace walls. Also, using triangle rib increases heat transfer and produces the minimum CO emission than the squared one in both NDB and TFB burners. Also there are good agreements between the measured and calculated heat transfer to the furnace walls by using the analytical model. | ||
| Keywords | ||
| Inverse diffusion flame; Radial ribs; Normal diffusion flame | ||
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