J Shanghai Jiaotong Univ Sci

Journal of Shanghai Jiaotong University(Science) >

2021 , Vol. 26 >Issue 2: 201 - 209

DOI: https://doi.org/10.1007/s12204-021-2280-x

Energy Engineering, Mechanics & Materials

Evaporation Characteristics of Ethanol Diesel Droplets Containing Nanoparticles

Expand
  • (School of Mechanical Engineering, Jiangsu University of Science and Technology,
    Zhenjiang 212100, Jiangsu, China)

Online published: 2021-03-24

Fold

Abstract

Evaporation plays an important role in the cylinder combustion process, so the study of fuel evaporation characteristics is very important to improve the combustion performance of internal combustion engine. In this study, ethanol diesel was used as the base fuel. The evaporation characteristics of droplets at different ambient temperatures (623K, 923K) were investigated by adding alumina nanoparticles with different mass fractions (1%, 2.5%) to ethanol diesel. The results show that the evaporation states of three kinds of droplets (ethanol diesel, base fuel with 1% alumina nanoparticles, base fuel with 2.5% alumina nanoparticles) are similar in the low temperature environment, and nanoparticles inhibit the evaporation of the droplets. At low temperature, the higher the concentration of nanoparticles is, the slower the evaporation rate is. However, in the high temperature environment, nanoparticles significantly promote droplet evaporation, and the phenomenon of micro explosion is obvious. By analyzing the evaporation processes of two different temperatures, we know that nanoparticles first gather on the surface of the droplet, then form a protective shell, and finally reduce the evaporation rate of the droplet at low temperature. In the high temperature environment, nucleation sites and bubbles are formed in the interior of the droplet; as the droplet is heated further, nucleation sites and bubbles first gather and then fuse; the bubbles gradually expand and burst rapidly, causing micro explosion of the droplets, and most of them are evaporated in the micro explosion.

Key words： ethanol diesel; nanoparticles; droplet evaporation; bubble; micro explosion

Cite this article

WANG Xiaorong (王筱蓉), WEI Ning (韦宁), GAO Ji (高吉), YAN Jun (严俊), JIANG Genzhu (姜根柱) . Evaporation Characteristics of Ethanol Diesel Droplets Containing Nanoparticles[J]. Journal of Shanghai Jiaotong University(Science), 2021 , 26(2) : 201 -209 . DOI: 10.1007/s12204-021-2280-x

References

[1] ELAIGWU M, OLUMA H O A, AGUORU C U, et al. Screening and phytochemical analysis of some plants extracts against aflatoxin producing fungi in sesame,Benue state, Nigeria [J]. American Journal of Plant Sciences, 2020, 11(3): 344-353.
[2] HIRSHFELD D S, KOLB J A, ANDERSON J E, et al.Refining economics of US gasoline: Octane ratings and ethanol content [J]. Environmental Science & Technology,2014, 48(19): 11064-11071.
[3] RICE R W, SANYAL A K, ELROD A C, et al. Exhaust gas emissions of butanol, ethanol, and methanolgasoline blends [J]. Journal of Engineering for Gas Turbines and Power, 1991, 113(3): 377-381.
[4] WANG J G, QIAO X Q, JU D H, et al. Bubble nucleation,micro-explosion and residue formation in superheated jatropha oil droplet: The phenomena of vapor plume and vapor cloud [J]. Fuel, 2020, 261: 116431.
[5] KASSERIS E, HEYWOOD J B. Charge cooling effects on knock limits in SI DI engines using gasoline/ethanol blends: Part 2-effective octane numbers [J]. SAE International Journal of Fuels and Lubricants, 2012, 5(2): 844-854.
[6] SASONGKO M N, WIJAYANTI W. Effect of ethanol addition on the performance and exhaust emissions of a spark ignition engine [J]. Journal of Mechanical Engineering and Sciences, 2017, 11(2): 2734-2742.
[7] YUAN C, HONG W, SU Y, et al. Influence of ethanolgasoline blended fuels on gasoline engine particulate emission during start [J]. Automotive Engineering,2018, 40(12): 1393-1397 (in Chinese).
[8] KRISHNA M V S M, PRAKASH T O, USHASRI P,et al. Experimental investigations on direct injection diesel engine with ceramic coated combustion chamber with carbureted alcohols and crude jatropha oil [J].Renewable and Sustainable Energy Reviews, 2016, 53:606-628.
[9] OLIVEIRA A, VALENTE O S, SODR′E J R. Effects of ethanol addition to biodiesel-diesel oil blends (B7 and B20) on engine emissions and fuel consumption[J]. MRS Advances, 2017, 2(64): 4005-4015.
[10] WANG J G, HUANG X Y, QIAO X Q, et al. Experimental study on evaporation characteristics of single
and multiple fuel droplets [J]. Journal of the Energy Institute, 2020, 93(4): 1473-1480.
[11] ZHANG Y, HUANG R H, WANG Z W, et al. Experimental study on puffing characteristics of biodieselbutanol droplet [J]. Fuel, 2017, 191: 454-462.
[12] WANG L T, WANG J G, QIAO X Q, et al. Effect of ambient temperature on the micro-explosion characteristics of soybean oil droplet: The phenomenon of evaporation induced vapor cloud [J]. International Journal of Heat and Mass Transfer, 2019, 139: 736-746.
[13] JU D H, ZHANG T T, XIAO J, et al. Effect of droplet sizes on evaporation of a bi-component droplet at DME (dimethyl ether)/n-heptane-fueled engine conditions[J]. Energy, 2015, 86: 257-266.
[14] RISHA G A, EVANS B J, BOYER E, et al. Metals,energetic additives, and special binders used in solid fuels for hybrid rockets [M]//Fundamentals of hybrid rocket combustion and propulsion. Reston, VA: AIAA,2007: 413-456.
[15] GHAMARI M, RATNER A. Combustion characteristics of colloidal droplets of jet fuel and carbon based nanoparticles [J]. Fuel, 2017, 188: 182-189.
[16] WANG X R, DAI M L, XIE Y L, et al. Experimental investigation of evaporation characteristics of biodiesel-diesel blend droplets with carbon nanotubes and nanoceria as nanoadditives [J]. Applied Surface Science, 2020, 505: 144186.
[17] GUERIERI P M, JACOB R J, WANG H Y, et al.Droplet combustion of kerosene augmented by stabilized nanoaluminum/oxidizer composite mesoparticles[J]. Combustion and Flame, 2020, 211: 1-7.
[18] TEREKHOV V I, SHISHKIN N E. Evaporation of water droplets containing carbon nanotubes [J]. Technical Physics Letters, 2012, 38(1): 25-28.
[19] KIM D M, BAEK S W, YOON J. Ignition characteristics of kerosene droplets with the addition of aluminum nanoparticles at elevated temperature and pressure [J].Combustion and Flame, 2016, 173: 106-113.
[20] TANVIR S, BISWAS S, QIAO L. Evaporation characteristics of ethanol droplets containing graphite nanoparticles under infrared radiation [J]. International Journal of Heat and Mass Transfer, 2017, 114:541-549.
[21] VYSOTSKII V V, ROLDUGHIN V I, URYUPINA O Y, et al. Evaporation of droplets of silver nanoparticle dispersions on metal surfaces [J]. Colloid Journal,2014, 76(5): 531-538.
[22] GAN Y N, LIM Y S, QIAO L. Combustion of nanofluid fuels with the addition of boron and iron particles at dilute and dense concentrations [J]. Combustion and Flame, 2012, 159(4): 1732-1740.
[23] GAN Y N, QIAO L. Radiation-enhanced evaporation of ethanol fuel containing suspended metal nanoparticles[J]. International Journal of Heat and Mass Transfer,2012, 55(21/22): 5777-5782.
[24] GAN Y N, QIAO L. Evaporation characteristics of fuel droplets with the addition of nanoparticles under natural and forced convections [J]. International Journal of Heat and Mass Transfer, 2011, 54(23/24): 4913-4922.
[25] JAVED I, BAEK S W, WAHEED K. Effects of dense concentrations of aluminum nanoparticles on the evaporation behavior of kerosene droplet at elevated temperatures:The phenomenon of microexplosion [J]. Experimental Thermal and Fluid Science, 2014, 56: 33-44.
[26] JAVED I, BAEK S W, WAHEED K, et al. Evaporation characteristics of kerosene droplets with dilute concentrations of ligand-protected aluminum nanoparticles at elevated temperatures [J]. Combustion and Flame, 2013, 160(12): 2955-2963.
[27] LI H F, YU H D, HUANG J C. Research on ethanoldiesel fuels with alcohol as co-solvent [J]. Journal of Guangxi University: Natural Science Edition, 2010,35(2): 282-285 (in Chinese).
[28] DAI M L, WANG J G, WEI N, et al. Experimental study on evaporation characteristics of diesel/cerium oxide nanofluid fuel droplets [J]. Fuel, 2019, 254:115633.
[29] JIANG G Z, YAN J, WANG G, et al. Effect of nanoparticles concentration on the evaporation characteristics of biodiesel [J]. Applied Surface Science, 2019,492: 150-156.
[30] WANG J G, WANG X R, CHEN H, et al. Experimental study on puffing and evaporation characteristics of jatropha straight vegetable oil (SVO) droplets [J]. International Journal of Heat and Mass Transfer, 2018,119: 392-399.

Options
Outlines

/

〈 〉