Experimental Investigation of Air-to-Kapok Oil Ratio Effects on Flame Height and Morphology in a Bunsen Burner

Authors

  • Bayu Pranoto Politeknik Negeri Malang, Indonesia
  • Nicky Suwandhy Widhi Supriyanto Politeknik Negeri Malang, Indonesia
  • Chandra Gunawan Politeknik Negeri Malang, Indonesia
  • Supa Kusuma Aji Politeknik Negeri Malang, Indonesia
  • Muhammad Arif Nur Huda Politeknik Negeri Malang, Indonesia

DOI:

https://doi.org/10.70609/g-tech.v9i3.7120

Keywords:

Kapok oil, Bunsen burner, Air Fuel Ratio (AFR), Flame height, Flame morphology

Abstract

The growing global demand for energy highlights the limitations of fossil fuel resources. This makes innovation in alternative energy development crucial, and one promising avenue is the use of vegetable oils like kapok oil. Kapok oil has a complex chemical composition, composed of various triglycerides of fatty acids and glycerol, where each fatty acid component contributes unique combustion characteristics. The interaction of the complexity of this content as a whole affects the flame pattern of kapok oil. Furthermore, the air-fuel mixture ratio (AFR) plays a significant role in determining the characteristics of the resulting flame. Therefore, this study aims to explore in depth the effect of AFR variations on the combustion characteristics of kapok oil. Experiments were conducted by burning a mixture of kapok oil vapor and air on a burner with controlled AFR settings. The results showed that the variation of AFR significantly changed the flame height and morphology. Flame height initially increased with increasing AFR (from 1.34 cm at AFR 0.143:1 to 4.429 cm at AFR 1.526:1) before decreasing (to 0.264 cm at AFR 4.011:1) until it reached the lift-off condition and went out.

References

Adoe, D. G. H., Talo, P., Pah, J. C. A., Tobe, A. Y., and Riwu, B. N. (2022). Karakteristik Pembakaran Premixed dari Campuran FAME (Fatty Acid Methyl Ester) dan Solar Murni. Lontar Jurnal Teknik Mesin Undana, 9(2), 47-52.

Aristyanto, A. (2020). Peranan Variasi Perforated Plate Burner Pada Pembakaran Premixed Minyak KelapaMurni Terhadap Karakteristik Nyala Api. Mechonversio: Mechanical Engineering Journal, 3(1), 18-22.

Dharma. (2013). The effect of equivalence ratio variation on the combustion flame characteristics of premixed castor oil on a perforated burner.

Dhiputra, Kartika, I. M. (2010). Experimental Study of Flame Lift-up Phenomenon. Department of Mechanical Engineering. Faculty of Engineering. University of Indonesia. Jakarta. Indonesia.

Dwinanda, A., Mufarida, N. A., and Finali, A. (2019). Pengaruh Variasi Debit Aliran Terhadap Karakteristik Api Pembakaran Difusi LPG dan CNG. J-Protecsion Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin, 3(2), 11-14.

Groff, E.G. (1982). The cellular nature of confined spherical propape-air flame, combustion, and flame. 48:51-62.

Handoyo, R., Anggraini, Ananta A., Anwar, Saiful. "Biodiesel dari Minyak Biji Kapok (Biodiesel from Kapok Seed Oil),"Jurnal Injiniring Pertanian, vol. 1, no. 5, pp. 1-8, 2007.

Kumar, S., Paul, P.J., Mukunda, H.S. (2005). Investigations of the scaling criteria for a mild combustion burner. Proceedings of the Combustion Institute, 30(26), 13-21.

Listiyadi, S. D., Ilminafik, N., Sutjahjono, H., Vicca, D. T., and Farisi, S. A. (2020). Premixed Combustion Characteristics Between Biosolar That Producted Pertamina with Biodiesel from Coconut Waste (Cocos Nucifera). Journal of Engineering and Applied Sciences, 15(6), 1502-1507.

Merlo, N. et al. (2014). Combustion characteristics of methane-oxygen enhanced air turbulent non-premixed swirling flames. Exp. Therm. Fluid Sci., 56:53–60.

Min J., Baillot F., Guo H., Domingues E., Talbaut M., Patte-Rouland B. (2011). Impact of CO.N or Ar diluted in air on the length and lifting behavior of a laminar diffusion flame. Proceedings of combustion and flame institute, 33:1071-1078.

Muhaya, S. B. L., Wardana, I.N.G., Widhiyanuriyawan, D. (2015). Pembakaran Premixed Minyak Nabati pada Bunsen Burner Type Silinder. Jurnal Rekayasa Mesin, 6(1), 45-50.

Murdianto, I. T. (2019). The Effect of Pressure Variation on Spray Combustion of Pure Coconut Oil Fuel on Angle, Flame Length, Droplet Diameter, Flashback. Mechonversio Mech. Eng. J., 2(1), 25, doi: 10.51804/mmej.v2i1.820.

Qiao, L., Gan, Y., Nishiie, T., Dahm, W. J. A., and Oran, E. S. (2010). Extinction of premixed methane/air flames in microgravity by diluents: Effects of radiation and Lewis number. Combustion and Flame, 157:1446-1455.

Pratama, B. W., Soebaktiyo, G., Hermawan, D. (2023). Karakteristik Nyala Api dan Air Fuel Ratio Minyak Nabati Terhadap Pembakaran Premixed. Jurnal V-Mac, 8(1), 20-27.

Ray, J., Najm, H.N., Milne, R.B., Devine, K.D., and Kempka, S. (2000). Tripple flame structure and dynamics at the stabilization point of an unsteady lifted jet diffusion flame. Proceedings of the combustion institute, 28:219-226.

Rokhim, A., A., Endahwati, L., Sutiyono, S. (2024). Utilization of Thermal Energy Using Thermoelectric Generator with Peltier Variation. Flywheel Journal, 14(1), 19-23.

Roring, A.G., Soebiyakto, G., Farid, A., Hermawan, D. (2025). The Effect of Nozzle Diameter Variation on Droplet Dimension, Spray Angle, and Spray Distance Using Pertalite Fuel. Flywheel Journal, 16(1), 7-12.

Rozaqi, M. F. (2019). The Effect of Nozzle Hole Diameter Variation on Droplet Dimension, Spray Angle, Spray Distance, and Flame Shape of Cottonseed Oil Fuel. Mechonversio Mech. Eng. J., 2(1), 17, doi: 10.51804/mmej.v2i1.819.

Solichi, A., Risdianto, N., Suwandono, P., Wicaksono, L.H. (2024). Simulation of Burner Position Configuration to Optimize Heat Treatment Pressure Vessel. Flywheel Journal, 15(1), 44-53.

Wahyudi, D. and Prasetiyo, D. H. T. (2022). Uji Karakteristik Pembakaran Premixed pada Methyl Ester Schleichera Oleosa Sebagai Campuran Bahan Bakar Diesel. Mechonversio: Mechanical Engineering Journal, 5(1), 1-6.

WA W. (2020). Analysis of Nozzle Hole Diameter Variation on Spray Characteristics of Coconut Oil with Kapok Oil (B50) in Diffusion Combustion. Mechonversio Mech. Eng. J., 3(1), 1, doi: 10.51804/mmej.v3i1.832.

Wardana, I.N.G. (2008). Fuel and Combustion Technology. PT. Danar Wijaya, Brawijaya University Press. Malang.

Vedharaj, S., Vallinayagam, R., Yang, Chou, S. K., and Lee, P. S. (2015). Effect of Adding 1,4-Dioxane With Kapok Biodiesel On The Characteristics of A Diesel Engine. Journal Applied Energy, 136(1), 1166-1173.

Vedharaj, S., Vallinayagam, R., Yang, W. M., Saravanan, C. G., and Lee, P. S. (2015). Optimization of Combustion Bowl Geometry for The Operation of Kapok Biodiesel – Diesel Blends In A Stationary Diesel Engine. Journal FUEL, 139(1), 561-567.

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Published

2025-07-02

How to Cite

Experimental Investigation of Air-to-Kapok Oil Ratio Effects on Flame Height and Morphology in a Bunsen Burner. (2025). G-Tech: Jurnal Teknologi Terapan, 9(3), 1186-1193. https://doi.org/10.70609/g-tech.v9i3.7120

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