Air-methane Mixture Ignition with Multi-Walled Carbon NanoTubes (MWCNTs) and Comparison with Spark Ignition

Carlucci, Antonio Paolo; Carnevale, F; Ciccarella, Giuseppe; Ficarella, Antonio; Filippo, Emanuela; Laforgia, Domenico; Mussardo, F.; Strafella, Luciano

doi:10.1016/j.egypro.2015.11.839

Cited by 11 publications

(7 citation statements)

References 10 publications

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“…Reported results show that the combustion occurs in an almost homogeneous way in the combustion chamber, without a discernible flame-front, as also reported in (Carlucci & Strafella, 2015). Furthermore, by comparing the combustion processes triggered by the CNTs and by the spark, on the basis of the measurements of dynamic pressure and in lean mixture conditions (φ = [1/λ] < 1), the ignition delay and the rise time of the pressure curve are shorter respect to the same parameters found by employing the spark (Carlucci et al, 2017).…”

Section: Mwcnts/ferrocene Ignition For Triggering the Combustion Of Dsupporting

confidence: 83%

“…In fact, the ignition phenomenon can be employed for triggering the combustion of solid, liquid and gaseous fuels (Badakhshan & Danczyk, 2014;Badakhshan, Danczyk, Wirth, & Pilon, 2011;Chehroudi, 2011Chehroudi, , 2012b. Furthermore, the photo-ignited nanoparticles allow to obtain a more distributed and homogeneous fuel combustion (Carlucci et al, 2014;Carlucci & Strafella, 2015;Johansson, 2007). This innovative method for triggering the fuel combustion, if it will be implemented, will become very important for the internal combustion engines, but also for other related applications, in the future (Zhao, 2007).…”

Section: Resultsmentioning

confidence: 99%

“…As example, Figure 6 shows the pressure curves acquired by triggering the combustion of an air-methane mixture, with an air-fuel equivalence ratio λ = 1.02, by using MWCNTs or spark-plug as igniters; starting from an initial value of 3 bar inside the combustion chamber, the pressure reaches about 21 bar for combustion triggered by MWCNTs and about 19 bar for the one triggered by the spark. From these curves it is possible to get, besides the reached pressure values, also the ignition delay and the combustion duration values (Carlucci & Strafella, 2015). Further tests were carried out in (Carlucci et al, 2016); by using the MWCNTs with 75% of ferrocene by weight, in order to investigate the combustion process of air/methane fuel, the air/fuel equivalence ratio was varied in the range [1.02-1.97], whereas the amount of used nanoparticles for triggering the fuel combustion, was also changed from 20 mg to 150 mg.…”

Section: Mwcnts/ferrocene Ignition For Triggering the Combustion Of Dmentioning

confidence: 99%

“…In order to overcome these issues, an innovative solution concerns the use of nanoparticles for triggering the ignition and thus the combustion with a precise temporal control on the combustion process. Moreover, by using the nanoparticles, it is possible to obtain a distributed and controlled ignition inside the combustion chamber; on the contrary, if the spark plug is used the ignition is triggered in a single point with consequent flame front propagation (Carlucci & Strafella, 2015;Chehroudi, Vaghjiani, & Ketsdever, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Photo-induced ignition phenomenon of carbon nanotubes by Xenon pulsed light: Ignition tests analysis, automotive and new potential applications, future developments

Primiceri

Fazio

Strafella

et al. 2017

Journal of Applied Research and Technology

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The possibility to use carbon nanotubes (CNTs) enriched with a certain amount of metal nanoparticles for photo-inducing the combustion of liquid fuel sprays, gaseous and solid fuels was investigated in different research works. CNTs photo-ignition phenomenon has been used to trigger the combustion of different fuel typologies, demonstrating better features compared with those obtained by employing a traditional spark-plug. These improvements are due to the presence of distributed ignition nuclei inside the combustion chamber, so obtaining better values of the peak pressure, ignition delay and combustion duration. In this work, the CNTs photo-ignition phenomenon has been analyzed in order to find the minimum energy values needed to trigger the ignition, by varying the light pulse parameters and the nanoparticles concentration, Multi Wall CNTs (MWCNTs)-ferrocene, by weight. Afterwards, the results of combustion processes, triggered by using the nanoparticles, are shown comparing them with those obtained by means the spark plug and with results already published related to other fuel typologies. Hence, an overview of the possible applications of this photo-ignition phenomenon, beside that of the automotive field, is presented, also considering the disadvantages of the Xe-lamp based triggering system. Therefore, after a critical discussion on the light source typology until now used (Xenon lamp), by reporting the possible contraindications deriving from the use of this light source in most of the applicative fields, a solution is here proposed. It involves the substitution of the Xe lamp with LED sources, showing also the related experimental setup. This solution is also strengthened by the our experimental observations of CNTs photo-ignition by using high-power white LEDs as light source, never reported up to now in the literature, and by better characteristics of adaptability, robustness, easy driving and benefits provided by the LEDs rather than the Xenon lamp.

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Section: Mwcnts/ferrocene Ignition For Triggering the Combustion Of Dsupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Section: Mwcnts/ferrocene Ignition For Triggering the Combustion Of Dmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photo-induced ignition phenomenon of carbon nanotubes by Xenon pulsed light: Ignition tests analysis, automotive and new potential applications, future developments

Primiceri

Fazio

Strafella

et al. 2017

Journal of Applied Research and Technology

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show abstract

“…This innovative research field was recently developed in [25–26]. In more detail, the photo-induced ignition of MWCNTs containing ferrocene metal nanoparticles by using a Xe flash lamp was used to photo-ignite gaseous methane/air mixtures.…”

Section: Introductionmentioning

confidence: 99%

Photo-ignition process of multiwall carbon nanotubes and ferrocene by continuous wave Xe lamp illumination

Visconti¹,

Primiceri²,

Longo³

et al. 2017

Beilstein J. Nanotechnol.

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This work aims to investigate and characterize the photo-ignition phenomenon of MWCNT/ferrocene mixtures by using a continuous wave (CW) xenon (Xe) light source, in order to find the power ignition threshold by employing a different type of light source as was used in previous research (i.e., pulsed Xe lamp). The experimental photo-ignition tests were carried out by varying the weight ratio of the used mixtures, luminous power, and wavelength range of the incident Xe light by using selective optical filters. For a better explanation of the photo-induced ignition process, the absorption spectra of MWCNT/ferrocene mixtures and ferrocene only were obtained. The experimental results show that the luminous power (related to the entire spectrum of the Xe lamp) needed to trigger the ignition of MWCNT/ferrocene mixtures decreases with increasing metal nanoparticles content according to previously published results when using a different type of light source (i.e., pulsed vs CW Xe light source). Furthermore, less light power is required to trigger photo-ignition when moving towards the ultraviolet (UV) region. This is in agreement with the measured absorption spectra, which present higher absorption values in the UV–vis region for both MWCNT/ferrocene mixtures and ferrocene only diluted in toluene. Finally, a chemo-physical interpretation of the ignition phenomenon is proposed whereby ferrocene photo-excitation, due to photon absorption, produces ferrocene itself in its excited form and is thus capable of promoting electron transfer to MWCNTs. In this way, the resulting radical species, FeCp2+∙ and MWCNT−, easily react with oxygen giving rise to the ignition of MWCNT/ferrocene samples.

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Combustion and performance characteristics of air-fuel mixtures ignited by means of photo-thermal ignition of Nano-Energetic Materials

et al. 2017

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Air-methane Mixture Ignition with Multi-Walled Carbon NanoTubes (MWCNTs) and Comparison with Spark Ignition

Cited by 11 publications

References 10 publications

Photo-induced ignition phenomenon of carbon nanotubes by Xenon pulsed light: Ignition tests analysis, automotive and new potential applications, future developments

Photo-induced ignition phenomenon of carbon nanotubes by Xenon pulsed light: Ignition tests analysis, automotive and new potential applications, future developments

Photo-ignition process of multiwall carbon nanotubes and ferrocene by continuous wave Xe lamp illumination

Combustion and performance characteristics of air-fuel mixtures ignited by means of photo-thermal ignition of Nano-Energetic Materials

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