Emissions Reductions in Diesel and Kerosene Flames Using a Novel Fuel Injector

Panchasara, Heena V.; Sequera, Daniel; Schreiber, Will; Agrawal, Ajay K.

doi:10.2514/1.37165

Cited by 26 publications

(10 citation statements)

References 5 publications

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“…Details of the experimental setup are described by Panchasara et al (2009a). The injector performance is characterized by measuring the emissions of NO X and CO.…”

Section: Low-emission Diesel Combustionmentioning

confidence: 99%

Novel Combustion Concepts for Sustainable Energy Development

Ágarwal¹,

Pandey²,

Gupta³

et al. 2014

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“…Details of the experimental setup are described by Panchasara et al (2009a). The injector performance is characterized by measuring the emissions of NO X and CO.…”

Section: Low-emission Diesel Combustionmentioning

confidence: 99%

Novel Combustion Concepts for Sustainable Energy Development

Ágarwal¹,

Pandey²,

Gupta³

et al. 2014

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“…Combustion experiments show that for a given equivalence ratio, heat release rate, and atomizing air-to-liquid mass ratio, the flow blurring injector produced three to five times lower NO x and CO emissions in diesel and kerosene flames, compared to the airblast injector [35]. Besides, liquid fuel, such as kerosene, diesel, biodiesel, straight vegetable oil and glycerol, atomized by a flow blurring injector can mainly burn under lean premixed mode producing extremely low emissions of CO and NO x [38e41].…”

Section: Introductionmentioning

confidence: 98%

Effects of injector tip design on the spray characteristics of soy methyl ester biodiesel in a blurry injector

Azevedo¹,

Andrade²,

Costa³

2016

Renewable Energy

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a b s t r a c tAtomization plays an important role in combustion and propulsion systems, including applications in transportation and power generation. The uncertainties in oil supply and environmental concerns motivate the development of new combustion technologies using biofuels, capable of operating with high thermal efficiency, low operational cost and reduced environmental impact. Flameless combustion is a promising technology that allows the reduction of pollutant emissions with high combustion efficiency. This work describes the characteristics of soy methyl ester (SME) sprays produced by a blurry injector. Characteristics droplet diameters, discharge coefficients, air-to-liquid mass ratios, air and liquid pressures and spray cone angles were experimentally determined. Three nozzle tip configurations have been tested: cylindrical, conical and conical-cylindrical. All nozzles configurations have presented high atomization efficiency, yielding relatively small characteristics diameters (SMD and MMD) and narrow spray cone angles, favoring its application in compact combustion systems.

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“…Cleaner combustion of straight VO using an AB injector was obtained by preheating the fuel [19]. Recently, our research group has developed a fuel-flexible combustion system that not only allows sustainable application of alternative fuels with wide range of physical and chemical properties, but also makes it easier to switch from conventional fuels such as methane, kerosene, diesel, etc, to alternative fuels such as biodiesel, VO, and glycerol [20][21][22][23][24]. The combustion system relies upon the flow-blurring (FB) injector reported first by Gañán-Calvo [25] to create "five to fifty times" more fuel surface area than a plain-jet AB atomizer.…”

Section: Introductionmentioning

confidence: 99%

“…Droplet size distributions measured by Phase Doppler Particle Analyzer (PDPA) in non-reacting diesel and straight vegetable oil (VO) sprays as well as in reacting sprays of highly viscous straight glycerol show that the FB injector produces fine sprays with flow-weighted average Sauter Mean Diameter (SMD) of 30 to 40 µm at axial locations of 2.0 to 10.0 cm downstream of the injector exit [21,22,28,29]. Clean and stable combustion of kerosene, diesel and biodiesel has been achieved using the FB injector in a 7 kW swirl stabilized burner [20][21][22][23][24]30]. FB injector has been shown to produce stable and clean blue flames of high viscosity fuels yielding very low CO and NO X emissions at the combustor exit [20][21][22][23][24]30].…”

Section: Introductionmentioning

confidence: 99%

“…Clean and stable combustion of kerosene, diesel and biodiesel has been achieved using the FB injector in a 7 kW swirl stabilized burner [20][21][22][23][24]30]. FB injector has been shown to produce stable and clean blue flames of high viscosity fuels yielding very low CO and NO X emissions at the combustor exit [20][21][22][23][24]30]. Table 1 compares the key physical properties of diesel, biodiesel, and glycerol fuels used in these studies.…”

Section: Introductionmentioning

confidence: 99%

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Combustion of straight glycerol with/without methane using a fuel-flexible, low-emissions burner

Jiang

Agrawal

2014

Fuel

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In this study, we present a fuel-flexible dual-fuel combustor to simultaneously burn methane and/or straight glycerol without preheating either glycerol or air by utilizing a novel flow-blurring (FB) liquid fuel injector. Product gas temperature, NO X and CO emissions at multiple locations inside the combustor are measured to quantitatively assess the flame structure, related to liquid atomization, droplet evaporation, and fuel-air mixing in the near field. For fixed total heat release rate, the impact of fuel mix on combustion performance is investigated by varying the methane gas and glycerol flow rates. For the same fuel mix, air to liquid mass ratio effect is evaluated by varying the atomizing air flow rate. Pure glycerol flame is also investigated to demonstrate the fuel flexibility and ease of switching between gas and liquid fuels in the present system. Results show that the methane combustion can assist glycerol vaporization to results in its rapid oxidation. In spite of the differences in the flame structure, profiles of product gas temperature and emissions at the combustor exit reveal that complete and mainly lean premixed combustion with low emissions is achieved for all of the test cases indicating excellent fuel flexibility of the present combustor using the FB injector.

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Emissions Reductions in Diesel and Kerosene Flames Using a Novel Fuel Injector

Cited by 26 publications

References 5 publications

Novel Combustion Concepts for Sustainable Energy Development

Novel Combustion Concepts for Sustainable Energy Development

Effects of injector tip design on the spray characteristics of soy methyl ester biodiesel in a blurry injector

Combustion of straight glycerol with/without methane using a fuel-flexible, low-emissions burner

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