Effects of dilution conditions on diesel particle size distribution and filter mass measurements in case of marine fuels

Ushakov, Sergey; Valland, Harald; Nielsen, Jørgen Bemnes; Hennie, Erik

doi:10.1016/j.fuproc.2013.09.008

Cited by 7 publications

(3 citation statements)

References 58 publications

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“…The dilution ratio (DR) has an impact on the formation of new particles and the amount of nanoparticles and particles of volatile or semivolatile character. This will further affect the measured PN concentration and size distribution by number. − A low DR enhances the formation of new particles and the growth of existing particles, due to a higher concentration of involved compounds compared to when a higher DR is used. , Further, DR is not expected to affect particles of nonvolatile character . Here, a low DR was used, due to the low concentration of particles.…”

Section: Resultsmentioning

confidence: 99%

Particle- and Gaseous Emissions from an LNG Powered Ship

Anderson

Salo

Fridell

2015

Environ. Sci. Technol.

107

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Measurements of particle number and mass concentrations and number size distribution of particles from a ship running on liquefied natural gas (LNG) were made on-board a ship with dual-fuel engines installed. Today there is a large interest in LNG as a marine fuel, as a means to comply with sulfur and NOX regulations. Particles were studied in a wide size range together with measurements of other exhaust gases under different engine loads and different mixtures of LNG and marine gas oil. Results from these measurements show that emissions of particles, NOX, and CO2 are considerably lower for LNG compared to present marine fuel oils. Emitted particles were mainly of volatile character and mainly had diameters below 50 nm. Number size distribution for LNG showed a distinct peak at 9-10 nm and a part of a peak at diameter 6 nm and below. Emissions of total hydrocarbons and carbon monoxide are higher for LNG compared to present marine fuel oils, which points to the importance of considering the methane slip from combustion of LNG.

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Section: Resultsmentioning

confidence: 99%

Particle- and Gaseous Emissions from an LNG Powered Ship

Anderson

Salo

Fridell

2015

Environ. Sci. Technol.

107

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“…There are two types of dilution tunnels in use. Using a dilution tunnel in particle sampling leads to [8][9][10]12];…”

Section: Introductionmentioning

confidence: 99%

Investigation of Optimal Dilution Ratio from a Dilution Tunnel Using in Particulate Matter Measurement

Obaidullah

Bram

Jacques

2018

IJETS

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Combustion of fuels leads to the formation of gaseous and particulate matter pollutants that have an impact on air quality and the environment. Comparison to the gaseous emissions from stack, measuring of particulate matter (PM) needs extra attention because particles do not behave as a continuum. Dilution tunnels are used with the PM measuring instruments to dilute the hot exhaust gases leaving from the stack. The main focus of this study was to investigate the dilution ratio results obtained from a partial flow dilution tunnel. The partial flow dilution system consists of a porous tube diluter, an ejector diluter and an air heater. The dilution air flow settings into the porous tube diluter and ejector diluter are selected for a wide range of dilution ratios. Two mass flow controllers were used to regulate the flow of dilution air into the diluters. The experiments were conducted at the Renewable Energy Laboratory of the Vrije Universiteit Brussel (VUB).There were a total of fifteen experiments with four flow settings conducted. Dilution ratio (DR) is evaluated based on the ratio of the CO2 (dry) concentration in the raw sample to the diluted sample. The results obtained from the experiments with the partial flow diluters are limited between 34 and 110. The experimental results are also compared with other works and found quite similar

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“…The most adequate technology for the abatement of soot particles coming from diesel engines is the one that employs catalytic filters [1][2][3][4]. Nowadays, commercialized filters consist of SiC monoliths with active elements on them [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%