Publication detail

Effervescent Atomizer for Atomization of Suspensions Containing Large Particles

JEDELSKÝ, J. OTÁHAL, J. JÍCHA, M.

Original Title

Effervescent Atomizer for Atomization of Suspensions Containing Large Particles

English Title

Effervescent Atomizer for Atomization of Suspensions Containing Large Particles

Type

conference paper

Language

en

Original Abstract

Single-hole effervescent atomizer in outside-in gas injection configuration is designed for spraying of waste fuels. An experimental study of atomization process is performed on cold test bench. The waste fuel is simulated using light heating oil (LHO) loaded with solid spherical particles in the size range 1 to 1.5 mm and mass concentration 10 %. Our first results show negligible effect of the particles loaded in the suspension on the final spray. Spray cone angle of the single-hole atomizer is extended by a swirl of the gas-suspension mixture in front of the exit orifice. Three atomizers were fabricated to test the effect of swirl chamber on the spray: atomizer without swirler, atomizer with moderate swirler and atomizer with intense swirler. Swirling the mixture leads to a significant increase of the spray cone angle at low gas to liquid ratio by mass (GLR). An increase of the gas mass fraction in the mixture inhibits the swirl action on the spray shape. The swirl effect diminishes with GLR rising above 15 %.

English abstract

Single-hole effervescent atomizer in outside-in gas injection configuration is designed for spraying of waste fuels. An experimental study of atomization process is performed on cold test bench. The waste fuel is simulated using light heating oil (LHO) loaded with solid spherical particles in the size range 1 to 1.5 mm and mass concentration 10 %. Our first results show negligible effect of the particles loaded in the suspension on the final spray. Spray cone angle of the single-hole atomizer is extended by a swirl of the gas-suspension mixture in front of the exit orifice. Three atomizers were fabricated to test the effect of swirl chamber on the spray: atomizer without swirler, atomizer with moderate swirler and atomizer with intense swirler. Swirling the mixture leads to a significant increase of the spray cone angle at low gas to liquid ratio by mass (GLR). An increase of the gas mass fraction in the mixture inhibits the swirl action on the spray shape. The swirl effect diminishes with GLR rising above 15 %.

Keywords

Effervescent Atomizer, Suspensions, Waste Fuels, Spray Cone Half-Angle, Spray Structure

RIV year

2008

Released

08.09.2008

Publisher

Politecnico di Milano

Location

Como Lake, Italy

ISBN

978-88-903712-0-2

Book

Sborník z 22 Annual Conference on Liquid Atomization and Spray Systems (Ilass 2008 Como Lake

Edition

1

Edition number

1

Pages from

1

Pages to

4

Pages count

4

BibTex


@inproceedings{BUT31182,
  author="Jan {Jedelský} and Jan {Otáhal} and Miroslav {Jícha}",
  title="Effervescent Atomizer for Atomization of Suspensions Containing Large Particles",
  annote="Single-hole effervescent atomizer in outside-in gas injection configuration is designed for spraying of waste fuels. An experimental study of atomization process is performed on cold test bench. The waste fuel is simulated using light heating oil (LHO) loaded with solid spherical particles in the size range 1 to 1.5 mm and mass concentration 10 %. Our first results show negligible effect of the particles loaded in the suspension on the final spray. Spray cone angle of the single-hole atomizer is extended by a swirl of the gas-suspension mixture in front of the exit orifice. Three atomizers were fabricated to test the effect of swirl chamber on the spray: atomizer without swirler, atomizer with moderate swirler and atomizer with intense swirler. Swirling the mixture leads to a significant increase of the spray cone angle at low gas to liquid ratio by mass (GLR). An increase of the gas mass fraction in the mixture inhibits the swirl action on the spray shape. The swirl effect diminishes with GLR rising above 15 %.",
  address="Politecnico di Milano",
  booktitle="Sborník z 22 Annual Conference on Liquid Atomization and Spray Systems (Ilass 2008 Como Lake",
  chapter="31182",
  edition="1",
  howpublished="print",
  institution="Politecnico di Milano",
  year="2008",
  month="september",
  pages="1--4",
  publisher="Politecnico di Milano",
  type="conference paper"
}