Experimental Study on Influence of Surfactant Dosage on Micro Explosion Occurrence in Water in Diesel Emulsion

Abstract:

An experimental investigation has been carried out to study the effect of surfactant dosage on micro explosion phenomenon. Three water in diesel emulsion with 20% water by volume was prepared using mechanical stirring at 17000rpm for 100s.The emulsions were stabilised by a were stabilized by a single surfactant with three different doses. Water in diesel emulsion droplet was suspended on a thermocouple and the evolution of micro explosion was recorded with a high speed camera synchronized with temperature data logger. Secondary atomization of emulsion droplet was observed under Leiden frost regime using a hot plate as the heat source. The results show that the occurrences of micro explosion are affected by the volume of added surfactant by influencing the exploding temperature and waiting time. Physical properties like density, viscosity and surface tension were also found to be influenced by the amount of surfactant used.

• Periodical: Applied Mechanics and Materials (Volume 819)
• Pages: 287-291
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.819.287
• Online since: January 2016
• Authors: Mohammed Yahaya Khan*, Z.A. Abdul Karim, A. Rashid A. Aziz, Isa Mohd Tan
• Keywords: Coalescence, Droplet Size, Micro Explosion, Surfactant, Water in Diesel Emulsion (WiDE)

References

[1] X. Tauzia, A. Maiboom, and S. R. Shah, Experimental study of inlet manifold water injection on combustion and emissions of an automotive direct injection diesel engine, Energy, vol. 35, pp.3628-3639, (2010).

DOI: 10.1016/j.energy.2010.05.007

[2] R. Ocampo-Barrera, R. Villasenor, and A. Diego-Marin, An experimental study of the effect of water content on combustion of heavy fuel oil/water emulsion droplets, Combustion and flame, vol. 126, pp.1845-1855, (2001).

DOI: 10.1016/s0010-2180(01)00295-4

[3] E. Mura, P. Massoli, C. Josset, K. Loubar, and J. Bellettre, Study of the micro-explosion temperature of water in oil emulsion droplets during the Leidenfrost effect, Experimental Thermal and Fluid Science, vol. 43, pp.63-70, (2012).

DOI: 10.1016/j.expthermflusci.2012.03.027

[4] H. Tanaka, T. Kadota, D. Segawa, S. Nakaya, and H. Yamasaki, Effect of ambient pressure on micro-explosion of an emulsion droplet evaporating on a hot surface, JSME International Journal Series B, vol. 49, pp.1345-1350, (2006).

DOI: 10.1299/jsmeb.49.1345

[5] H. Watanabe, Y. Suzuki, T. Harada, Y. Matsushita, H. Aoki, and T. Miura, An experimental investigation of the breakup characteristics of secondary atomization of emulsified fuel droplet, Energy, vol. 35, pp.806-813, (2010).

DOI: 10.1016/j.energy.2009.08.021

[6] Y. Morozumi and Y. Saito, Effect of physical properties on microexplosion occurrence in water-in-oil emulsion droplets, Energy & Fuels, vol. 24, pp.1854-1859, (2010).

DOI: 10.1021/ef9014026

[7] I. Jeong, K. -H. Lee, and J. Kim, Characteristics of auto-ignition and micro-explosion behavior of a single droplet of water-in-fuel, Journal of Mechanical Science and Technology, vol. 22, pp.148-156, (2008).

DOI: 10.1007/s12206-007-1018-5

[8] V. Califano, R. Calabria, and P. Massoli, Experimental evaluation of the effect of emulsion stability on micro-explosion phenomena for water-in-oil emulsions, Fuel, vol. 117, pp.87-94, (2014).

DOI: 10.1016/j.fuel.2013.08.073

[9] E. Mura, R. Calabria, V. Califano, P. Massoli, and J. Bellettre, Emulsion droplet micro-explosion: Analysis of two experimental approaches, Experimental Thermal and Fluid Science, vol. 56, pp.69-74, (2014).

DOI: 10.1016/j.expthermflusci.2013.11.020