Experimental investigation concerning the influence of fuel type and properties on the injection and atomization of liquid biofuels in an optical combustion chamber

Galle, Jonas; Defruyt, Sander; Maele, C. Van de; Piloto‐Rodríguez, Ramón; Denon, Quenten; Verliefde, Arne; Verhelst, Sebastian

doi:10.1016/j.biombioe.2013.07.004

Cited by 33 publications

(18 citation statements)

References 7 publications

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“…MGO represented a relatively short LOL compared to FAEE, which means it burned closer to the nozzle tip. This was also found in [10] and [11] for biodiesel and confirms that fish oil has similar spray properties as these fuels.…”

Section: Spray Cone Anglesupporting

confidence: 76%

“…have an impact of the spray formation and therefore of the combustion itself. It was observed in other references that fish oils with higher viscosity have longer penetration length and narrower spray cone angles [11] [10]. It was stated that higher fuel viscosity, increase the droplet size in the spray and leads to higher spray momentum.…”

Section: Spray Analysismentioning

confidence: 97%

“…The higher viscosity of biodiesel resulted in loss of flow efficiency and reduction in injection velocity, still spray penetration was marginally higher, cone angle was lower and liquid length higher for biodiesel due to poor atomization, higher boiling temperature and the heat of vaporization. Galle et al [11] investigated the influence of different types of biodiesel on the injection and atomization processes. They observed slightly longer spray penetration for unprocessed bio oils compared to biodiesel and petroleum diesel.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Soot Investigation on Fish Oil Spray Combustion in a Constant Volume Cell

Malin¹,

Krivopolianskii²,

Rygh³

et al. 2015

SAE Int. J. Fuels Lubr.

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Maritime environmental regulations stipulate lower emissions from the shipping industry. To cope with these rules, improving the combustion processes, make use of cleaner alternative fuels and implement exhaust gas cleaning systems is necessary. Alternative fuels, like fish oil, have a potential to reduce soot formation during the combustion process and will be deeply investigated in this paper. For this purpose, two different types of fish oil and their blends with marine gas oil (MGO) have been tested in a constant volume pre-combustion cell (CVPC). The CVPC laboratory was built in collaboration between MARINTEK and NTNU. To generate similar injection condition in the combustion cell as in an internal combustion engine, the CVPC is heated using a chemical heating process. The CVPC is used as a fundamental investigation tool for studying the fuel injection system for large engine applications. Parameters that were studied include the combustion, spray development, fuel evaporation process and ignition delay. The general experimental setup of the test facility is described and the optical methods applied are explained for the investigation of fish oil. The aim is to study soot intensity and spray development and to compare the results to pure low-sulphur MGO as a reference fuel. The results conclude that the combustion and ignition properties of fish oil are very similar to marine gas oil and this makes it applicable as an alternative fuel for power generation in the maritime industry. The tests also showed a significant decrease in soot formation for the two fish oils.

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Section: Spray Cone Anglesupporting

confidence: 76%

Section: Spray Analysismentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soot Investigation on Fish Oil Spray Combustion in a Constant Volume Cell

Malin¹,

Krivopolianskii²,

Rygh³

et al. 2015

SAE Int. J. Fuels Lubr.

View full text Add to dashboard Cite

show abstract

“…The influence of fuel properties on the spray characteristics has been investigated in some literature. [13][14][15][16][17][18][19] Their results revealed significant differences in injector internal flow and spray characteristics between biodiesel and diesel. The cavitation and turbulence levels of biodiesel are lower than those of diesel.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the influence of fuel temperature and injection parameters on biodiesel spray characteristics

Geng

Wang

et al. 2019

Energy Science & Engineering

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The purpose of this study is to investigate the effects of fuel temperature and nozzle length‐diameter ratio (L/D) on biodiesel spray characteristics, under high injection pressure and high ambient pressure, by numerical method. The analysis of spray characteristics is carried out in conjunction with the transient flow inside nozzle. To achieve this, three‐dimensional calculation grids of spray nozzle and spray domain were setup, and the needle movement was achieved by dynamic mesh technique. The reliability of spray models was validated by experimental results. It was established that the variation in spray tip penetration (STP) and Sauter mean diameter (SMD) is similar at different initial conditions. The STP increases at a faster rate initially and then slows down, whereas the SMD gradually decreases with time after the injection. In addition, a sensitivity analysis of the effects of injection parameters on biodiesel spray characteristics was conducted. Compared to the nozzle L/D, injection pressure and fuel temperature have a greater impact on biodiesel spray characteristics. The increase in injection pressure has a significant effect on the velocity distribution, STP and SMD. When the injection pressure is increased from 100 to 200 MPa, the maximum velocity of the spray core zone increases by 33.96%, the STP increases by 27.17%, and the SMD reduces by 14.81%. Furthermore, an increase in fuel temperature mainly affects the concentration distribution and the SMD of atomized droplets. When the fuel temperature is increased from 300 to 350 K, the maximum concentration of axial spray center lowers by 25.41%, and the SMD decreases by 17.19%. However, the increase of L/D chiefly impacts the concentration of axial spray center, but has little effect on other spray parameters. When the nozzle L/D is increased from 4 to 8, the maximum concentration of axial spray center increases by 20.29%.

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“…According to Im et al [32], when BD is ultrasonically irradiated, due to the effect of ultrasonic cavitation, the intricate ring-shaped hydrocarbon compound in the BD is changed to a chain-shaped hydrocarbon compound, and the viscosity is decreased by up to 27%, and the higher the ratio of BD, the greater the reduction of viscosity. Galle et al [33] reported that when rapeseed methyl ester is heated to 90℃, the density and surface tension of BD are decreased and the kinematic viscosity of BD drops to a level similar to that of CD. According to Yoon et al [34], in a study on the change of kinematic viscosity according to the temperatures of BD and BD-diesel compound, the kinematic viscosities of BD100 at 0℃ and 80℃ were 39 mm 2 /s and 2.5 mm 2 /s, respectively (i.e., the kinematic viscosity decreased by 93.5% with the temperature rise).…”

Section: Introductionmentioning

confidence: 99%

Effect of kinematic viscosity variation with blended-oil biodiesel on engine performance and exhaust emission in a power tiller engine

Woo

Kim

2019

Environmental Engineering Research

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The optimum conditions for producing biodiesel by combining beef tallow, a waste resource with high saturated fatty acid content, and soybean oil, which has high unsaturated fatty acid content, were investigated. Furthermore, the kinematic viscosity reduction effects of biodiesel by using heating and ultrasonic irradiation were verified, and their impacts on engine performance and exhaust emissions were evaluated. The result shows that the optimum production conditions are a blend ratio of TASO3 (soybean oil to tallow blend ratio of 7:3) and a methanol to oil molar ratio of 12:1. Kinematic viscosity reduction experiment results showed that the kinematic viscosity reduction effects of ultrasonic irradiation and heating were similar, but the heating device is considered more effective because it is simpler and cheaper than the ultrasonic device. Experiment results on output performance and exhaust performance showed that the engine performance and exhaust performance of the fuel with reduced kinematic viscosity were higher than those of the untreated fuel. However, the output of biodiesel was lower than those of conventional diesel (CD) due to the low calorific value of biodiesel; the NOx and CO2 emissions of biodiesel were higher than those of CD, but the CO and HC emissions of biodiesel were lower.

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Experimental investigation concerning the influence of fuel type and properties on the injection and atomization of liquid biofuels in an optical combustion chamber

Cited by 33 publications

References 7 publications

Soot Investigation on Fish Oil Spray Combustion in a Constant Volume Cell

Soot Investigation on Fish Oil Spray Combustion in a Constant Volume Cell

Numerical simulation of the influence of fuel temperature and injection parameters on biodiesel spray characteristics

Effect of kinematic viscosity variation with blended-oil biodiesel on engine performance and exhaust emission in a power tiller engine

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