Detail publikace

Effervescent Atomizér pro rozprašování suspenzí s velkými částicemi

JEDELSKÝ, J. OTÁHAL, J. JÍCHA, M.

Originální název

Effervescent Atomizer for Atomization of Suspensions Containing Large Particles

Český název

Effervescent Atomizér pro rozprašování suspenzí s velkými částicemi

Anglický název

Effervescent Atomizer for Atomization of Suspensions Containing Large Particles

Typ

článek ve sborníku

Jazyk

en

Originální abstrakt

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 %.

Český abstrakt

Jednoduchý effervescent atomizér je navržen pro atomizaci odpadních paliv. exoperimentální studie atomizace je prováděna na studeném zkušebním stavu. Odpadní palivo je simulováno pomocí suspenze lehkého topného oleje a polystyrenových částic velikosti 1-1.5 mm v koncentraci 10 %. První výsledky ukazují, že vliv částic v suspenzi na atomizační proces je minimální. Úhel kužele spreje byl rozšířen zavířením směsi na výstupu trysky. Byly vyrobeny a testovány 3 trysky: bez zavíření, s mírným a silným zavířením. Výsledky ukazují, že zavíření směsi vede k výrazně širšímu úhlu kužele spreje při nízkých GLR. S růstem GLR tento efekt je potlačen a mizí pokud GLR roste nad 15 %.

Anglický abstrakt

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 %.

Klíčová slova

Effervescent Atomizér, Suspenye, odpadní paliva, úhel kužele spreje, Struktura spreje

Rok RIV

2008

Vydáno

08.09.2008

Nakladatel

Politecnico di Milano

Místo

Como Lake, Italy

ISBN

978-88-903712-0-2

Kniha

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

Edice

1

Číslo edice

1

Strany od

1

Strany do

4

Strany počet

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"
}