Characteristics of liquid ethanol diffusion flames from mini tube nozzles

Chen, J.; Peng, Xiaofeng; Yang, Zeliang; Cheng, Jiang

doi:10.1016/j.combustflame.2008.08.007

Cited by 23 publications

(9 citation statements)

References 7 publications

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“…[15][16][17][18] Some researches preferred to apply liquid hydrocarbon fuels due to their advantages, such as big energy density, compactness, and portability. [19][20][21][22][23][24] The hydrocarbon flame contains a large number of ions and electrons with a number density of 10 9 -10 12 /cm 3 due to chemi-ionization in the reaction zone, which will put an effect on the combustion behavior. [25][26][27] So, the electric field can be applied to reduce instabilities, adjust flame luminosity, and control combustion efficiency and emissions.…”

Section: Introductionmentioning

confidence: 99%

Effects of direct-current electric fields on flame shape and combustion characteristics of ethanol in small scale

Gan

Wang

Luo

et al. 2016

Advances in Mechanical Engineering

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The aim of this work is to investigate the effects of direct-current electric fields on the behavior of the small-scale diffusion ethanol flame. The flow rate of liquid ethanol, the flame temperatures, and the flame shapes were measured. The results showed that the stable working ranges of a small-scale combustor became narrower under the direct-current electric field. The main reason was that the evaporation velocity of liquid ethanol limited by great heat loss effect cannot keep up with the increasing of combustion velocity by the ionic wind effect. The movements of those charged particles in flame enhanced the combustion process, resulting in higher flame temperatures under positive or negative directcurrent electric field. The flame heights decreased with increasing applied voltages, due to the ionic wind effect increasing the flame temperature and the diffusivity. The flame voltage-current characteristic was also examined. Three regions can be divided: the subsaturation region, the saturation region, and the supersaturation region. Finally, the ratios of electric active power to actual burning thermal power of ethanol flame were calculated. It can be inferred that using the external direct-current electric field with little power consumption to control combustion and flame is a feasible method.

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Section: Introductionmentioning

confidence: 99%

Effects of direct-current electric fields on flame shape and combustion characteristics of ethanol in small scale

Gan

Wang

Luo

et al. 2016

Advances in Mechanical Engineering

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“…The mesh acts not only as a "collector" (to collect charged droplets), but also as a "flame holder" through heat recirculation (Mikami, et al, 2013). Laminar jet diffusion flames of liquid ethanol were stabilized by submillimeter tubes, as shown in the studies by Chen , et al (2009) andXu, et al (2013). Additionally, motivated by developing a multiple arrayed microflame burner, the interactions of microflames have been studied by Hirasawa, et al (2012) and Kuwana, et al (2016).…”

Section: Instability and Othersmentioning

confidence: 99%

Progress in small-scale combustion

Nakamura

Gao

Matsuoka

2017

JTST

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This article briefly reviews the recent works related to small-scale combustion and its potential impact into combustion science and engineering is presented. Followed by a simple description of the scale effect on combustion to highlight its "unique" feature, past related works are then summarized. The impact of heat recirculation appearing in combustion systems, which is the most prominent feature of a micro-or small-scale combustion system, is focused upon and is understood that exactly the same strategy promising better combustion performance is confirmed irrespective of flame type (either premixed or non-premixed). With respect to this, paying attention to the entire combustor design, to optimize within the target working range is a crucial matter when micro-scale combustion is adopted. Potential subjects to be covered to further promote these aspects in this field are then presented.

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“…Previous studies were mainly carried out using gas fuel in micro-scale. The liquid fuel has higher energy density and smaller volume, and it was easily to store and transport [34]. Studies on the effects of AC electric field on flame behaviour using liquid fuel in small-scale remain limited.…”

Section: Introductionmentioning

confidence: 99%