DINAMIKA DAN NYALA API PEMBAKARAN DROPLET CAMPURAN METIL LAURAT – METIL OLEAT

Authors

  • Lilis Yuliati Brawijaya University
  • Nurkholis Hamidi Brawijaya University
  • Muhamad Luthfi Lazuardi Brawijaya University

DOI:

https://doi.org/10.21776/jrm.v14i3.1764

Keywords:

Methyl Oleate, Methyl Laurate, Dynamics of Droplet Combustion, Flame

Abstract

This research intended to investigate the dynamics and flame of the droplet combustion of methyl laurate - methyl oleate blended. Methyl oleate is an unsaturated FAME with a relatively long carbon chain, frequently found as the dominant component in various biodiesel. Meanwhile, methyl laurate is a saturated FAME with a shorter carbon chain, which is the main component in coconut oil biodiesel. The methyl oleate content in the droplets was varied by 0, 20, 40, 60, 80, and 100%. Visual observations and temperature measurements were conducted on the combustion of suspended droplets with a diameter of 1.24 mm. The droplet is supported by a thermocouple junction with a wire diameter of 0.1 mm. The experimental results show that increasing of the methyl oleate content increase the ignition delay time, burning time, thermal expansion of droplets as well as fluctuations in droplet diameter and combustion temperature. Ignition delay time has a much greater value than burning time. This parameter should be suppressed to obtain more complete combustion and cleaner exhaust emissions, especially in internal compression engine applications where the time available for the combustion process is very short. This can be obtained by increasing the percentage of methyl laurate in biodiesel.

Author Biography

Lilis Yuliati, Brawijaya University

Mechanical Engineering Department

References

P. Maneechakr dan S. Karnjanakom, “A combination of 2k factorial with Box-Behnken designs for FAME production via methanolysis of waste cooking palm oil over low-cost catalyst,” Journal of Environmental Chemical Engineering, vol. 7, no. 5, hal. 103389, 2019.

S. Basu dan A. Miglani, “Combustion and heat transfer characteristics of nanofluid fuel droplets: A short review,” Int. Journal of Heat Mass Transfer, vol. 96, 2016, hal. 482–503, 2016.

E. G. Giakoumis, “Analysis of 22 vegetable oils’ physico-chemical properties and fatty acid composition on a statistical basis, and correlation with the degree of unsaturation,” Renewable Energy, vol. 126, hal. 403–419, 2018.

A. T. Hoang, “Combustion behavior, performance and emission characteristics of diesel engine fuelled with biodiesel containing cerium oxide nanoparticles: A review,” Fuel Processing Technology, vol. 218, hal. 106840, 2021.

E. Marlina, W. Wijayanti, L. Yuliati, dan I. N. G. Wardana, “The role of pole and molecular geometry of fatty acids in vegetable oils droplet on ignition and boiling characteristics,” Renewable Energy, vol. 145, hal. 596–603, 2020.

P. X. Pham, K. T. Nguyen, T. V. Pham, dan V. H. Nguyen, “Biodiesels manufactured from different feedstock: From fuel properties to fuel atomization and evaporation,” ACS Omega, vol. 5, no. 33, hal. 20842–20853, 2020.

A. J. Marchese, T. L. Vaughn, K. Kroenlein, dan F. L. Dryer, “Ignition delay of fatty acid methyl ester fuel droplets: Microgravity experiments and detailed numerical modeling,” Proceedings of the Combustion Institute, vol. 33, no. 2, hal. 2021–2030, 2011.

N. Meiri, P. Berman, L. A. Colnago, T. B. Moraes, C. Linder, dan Z. Wiesman, “Liquid-phase characterization of molecular interactions in polyunsaturated and n-fatty acid methyl esters by 1H low-field nuclear magnetic resonance,” Biotechnol. Biofuels, vol. 8, no. 1, hal. 1–12, 2015.

I. A. Ibadurrohman, N. Hamidi, L. Yuliati, dan B. A. Valentino, “Experimental investigation on the effect of carbon chain length to the droplet combustion characteristic of fatty acid methyl ester,” IOP Conf. Ser. Mater. Sci. Eng., vol. 1034, hal. 012060, 2021.

L. Zhu, C. S. Cheung, dan Z. Huang, “Impact of chemical structure of individual fatty acid esters on combustion and emission characteristics of diesel engine,” Energy, vol. 107, hal. 305–320, 2016.

C. V. Naik, C. K. Westbrook, O. Herbinet, W. J. Pitz, dan M. Mehl, “Detailed chemical kinetic reaction mechanism for biodiesel components methyl stearate and methyl oleate,” Proceedings of the Combustion Institute., vol. 33, no. 1, hal. 383–389, 2011.

A. Gopinath, K. Sairam, R. Velraj, dan G. Kumaresan, “Effects of the properties and the structural configurations of fatty acid methyl esters on the properties of biodiesel fuel: a review,” Journal of Automobile Engineering, vol. 229, no. 3, hal. 1–34, 2014.

W. Ferdinand, A. Sako, A. Fofana, dan K. Blaise, “Fatty acids composition as a means to estimate the high heating value (HHV) of vegetable oils and biodiesel fuels,” Energy, vol. 35, hal. 4949–4954, 2010.

S. Ando, Y. Wu, S. Nakaya, dan M. Tsue, “Droplet combustion behavior of oxidatively degraded methyl laurate and methyl oleate in microgravity,” Combustion and Flame, vol. 214, hal. 199–210, 2020.

P. X. Pham, H. Wang, Z. D. Ristovski, and R. J. Brown, “Engine Performance Characteristics for Biodiesels of Different Degrees of Saturation and Carbon Chain Lengths,” SAE International Journal of Fuels and Lubricants, vol. 6, no. 1, hal. 188–198, 2013.

T. Ahmed, A. Kourmatzis, P. X. Pham, dan A. R. Masri, “Droplet evaporation modeling of electrified fatty acid methyl esters,” Fuel, vol. 231, hal. 244–252, 2018.

N. Hamidi, I. Ahmad Ibadurrohman, L. Yuliati, W. Winarto, dan D. B. Darmadi, “The Effect of Alcohol Compounds on Droplet Combustion Characteristics of Unsaturated Fatty Acid of Linoleic Acid,” Trends in Sciences., vol. 20, no. 7, hal. 6720, 2023.

I. A. Ibadurrohman, N. Hamidi, L. Yuliati, Winarto, dan M. Mikami, “The impact of ethanol addition on the droplet combustion mechanism of saturated and unsaturated fatty acid/fatty acid methyl ester molecules,” Fuel, vol. 334, hal. 126371, 2023.

Ooi JB, Yap J, Tran M, dan Leong K., “Experimental investigation on the droplet burning behavior of diesel-palm biodiesel blends,” Energy Fuels, Vol. 33, no. 11, hal. 11804–11811, 2019.

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Published

2023-12-15

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