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Experimental study of combustion characteristics of nanoscale metal and metal oxide additives in biofuel (ethanol).

Jones M, Li CH, Afjeh A, Peterson G - Nanoscale Res Lett (2011)

Bottom Line: N-Al volume fractions of 1 and 3% did not show enhancement in the average volumetric HoC, but higher volume fractions of 5, 7, and 10% increased the volumetric HoC by 5.82, 8.65, and 15.31%, respectively.N-Al2O3 and heavily passivated n-Al additives did not participate in combustion reactively, and there was no contribution from Al2O3 to the HoC in the tests.A combustion model that utilized Chemical Equilibrium with Applications was conducted as well and was shown to be in good agreement with the experimental results.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Mechanical, Industrial, and Manufacturing Engineering University of Toledo, Toledo, OH 43606, USA. calvin.li@villanova.edu.

ABSTRACT
An experimental investigation of the combustion behavior of nano-aluminum (n-Al) and nano-aluminum oxide (n-Al2O3) particles stably suspended in biofuel (ethanol) as a secondary energy carrier was conducted. The heat of combustion (HoC) was studied using a modified static bomb calorimeter system. Combustion element composition and surface morphology were evaluated using a SEM/EDS system. N-Al and n-Al2O3 particles of 50- and 36-nm diameters, respectively, were utilized in this investigation. Combustion experiments were performed with volume fractions of 1, 3, 5, 7, and 10% for n-Al, and 0.5, 1, 3, and 5% for n-Al2O3. The results indicate that the amount of heat released from ethanol combustion increases almost linearly with n-Al concentration. N-Al volume fractions of 1 and 3% did not show enhancement in the average volumetric HoC, but higher volume fractions of 5, 7, and 10% increased the volumetric HoC by 5.82, 8.65, and 15.31%, respectively. N-Al2O3 and heavily passivated n-Al additives did not participate in combustion reactively, and there was no contribution from Al2O3 to the HoC in the tests. A combustion model that utilized Chemical Equilibrium with Applications was conducted as well and was shown to be in good agreement with the experimental results.

No MeSH data available.


Related in: MedlinePlus

SEM image of n-Al2O3 at 500 nm magnification, as received from the manufacturer.
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Figure 2: SEM image of n-Al2O3 at 500 nm magnification, as received from the manufacturer.

Mentions: Scanning electron microscope (SEM) images in Figures 1 and 2 display the similar size diameter and size distribution of the nano-aluminum materials. An energy dispersive X-ray spectroscopy (EDS) was performed, and this resulted in an atomic composition of 78.53% Al, 19.48% O for the n-Al sample and 53.52% Al, 46.48% O for the n-Al2O3 sample. The nanoparticle material properties and fuel properties are listed in Tables 1 and 2.


Experimental study of combustion characteristics of nanoscale metal and metal oxide additives in biofuel (ethanol).

Jones M, Li CH, Afjeh A, Peterson G - Nanoscale Res Lett (2011)

SEM image of n-Al2O3 at 500 nm magnification, as received from the manufacturer.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211307&req=5

Figure 2: SEM image of n-Al2O3 at 500 nm magnification, as received from the manufacturer.
Mentions: Scanning electron microscope (SEM) images in Figures 1 and 2 display the similar size diameter and size distribution of the nano-aluminum materials. An energy dispersive X-ray spectroscopy (EDS) was performed, and this resulted in an atomic composition of 78.53% Al, 19.48% O for the n-Al sample and 53.52% Al, 46.48% O for the n-Al2O3 sample. The nanoparticle material properties and fuel properties are listed in Tables 1 and 2.

Bottom Line: N-Al volume fractions of 1 and 3% did not show enhancement in the average volumetric HoC, but higher volume fractions of 5, 7, and 10% increased the volumetric HoC by 5.82, 8.65, and 15.31%, respectively.N-Al2O3 and heavily passivated n-Al additives did not participate in combustion reactively, and there was no contribution from Al2O3 to the HoC in the tests.A combustion model that utilized Chemical Equilibrium with Applications was conducted as well and was shown to be in good agreement with the experimental results.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Mechanical, Industrial, and Manufacturing Engineering University of Toledo, Toledo, OH 43606, USA. calvin.li@villanova.edu.

ABSTRACT
An experimental investigation of the combustion behavior of nano-aluminum (n-Al) and nano-aluminum oxide (n-Al2O3) particles stably suspended in biofuel (ethanol) as a secondary energy carrier was conducted. The heat of combustion (HoC) was studied using a modified static bomb calorimeter system. Combustion element composition and surface morphology were evaluated using a SEM/EDS system. N-Al and n-Al2O3 particles of 50- and 36-nm diameters, respectively, were utilized in this investigation. Combustion experiments were performed with volume fractions of 1, 3, 5, 7, and 10% for n-Al, and 0.5, 1, 3, and 5% for n-Al2O3. The results indicate that the amount of heat released from ethanol combustion increases almost linearly with n-Al concentration. N-Al volume fractions of 1 and 3% did not show enhancement in the average volumetric HoC, but higher volume fractions of 5, 7, and 10% increased the volumetric HoC by 5.82, 8.65, and 15.31%, respectively. N-Al2O3 and heavily passivated n-Al additives did not participate in combustion reactively, and there was no contribution from Al2O3 to the HoC in the tests. A combustion model that utilized Chemical Equilibrium with Applications was conducted as well and was shown to be in good agreement with the experimental results.

No MeSH data available.


Related in: MedlinePlus