Research Papers

Effect of Nanoparticle Suspensions on Liquid Fuel Hot-Plate Ignition

[+] Author and Article Information
Zhi Huang, Yuxuan Lu, Ting Cheng, Liangying Yu

School of Power and Mechanical Engineering,
Wuhan University,
Wuhan, HB 430072, China

Weimin Kan

GPGC Electric Power Research Institute,
Guangzhou, GD 510600, China

Xuejiao Hu

School of Power and Mechanical Engineering,
Wuhan University,
Wuhan, HB 430072, China
Ministry of Education Key Laboratory
on Hydrodynamic Transients,
Wuhan, HB 430072, China
e-mail: xjhu@whu.edu.cn

1Corresponding author.

Manuscript received March 9, 2014; final manuscript received November 3, 2014; published online November 19, 2014. Assoc. Editor: Calvin Li.

J. Nanotechnol. Eng. Med 5(3), 031004 (Aug 01, 2014) (5 pages) Paper No: NANO-14-1022; doi: 10.1115/1.4029029 History: Received March 09, 2014; Revised November 03, 2014; Online November 19, 2014

Increased ignition probabilities of ethanol are found on a heated hot-plate with the introduction of Al2O3, Fe3O4, and carbon nanotube (CNT) nanoparticle suspensions. We show that the mechanism is probably due to liquid fuel boiling point elevation caused by nanoparticle accumulation at liquid–vapor interfaces. The magnitudes of this impact are related to the number and geometry of nanoparticles but independent from the nanoparticle chemical compositions. These findings may have important applications for developing future alternative liquid fuels with advanced combustion characteristics.

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Grahic Jump Location
Fig. 1

Experimental setup

Grahic Jump Location
Fig. 2

Measured (dots) and fitted (curves) ignition probabilities at various hot-plate temperatures. (a) Ethanol with CNT suspensions versus pure ethanol and (b) ethanol with spherical NP (Al2O3, Fe3O4) suspensions versus pure ethanol. The insets depict the corresponding ignition probability densities, the peaks of which are the average hot-plate ignition temperatures, T*.

Grahic Jump Location
Fig. 3

Leidenfrost drop with nanoparticle suspensions

Grahic Jump Location
Fig. 4

Ignition temperature decrease: theoretical prediction versus experimental data



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