Nucleation in a perforated tube diluter

Jouni Pyykönen, M. Miettinen, O. Sippula, A. Leskinen, T. Raunemaa, Jorma Jokiniemi

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Abstract

This study investigates the effect of the dilution method on the formation of particles by nucleation during cooling. Nucleation in a perforated tube diluter was studied with experiments and models, using dibutylphthalate (DBP) as the nucleating agent. The experiments demonstrate that nucleation tendencies of various DBP concentrations can be observed in the diluter.
Modelling studies were carried out using estimates of DBP nucleation rates from the literature. These indicate that nucleation mostly takes place inside the diluter either at the first orifice rings as some DBP vapour is trapped in low temperature regions or in a similar situation in turbulent eddies when high vapour concentration is still present.
The complex turbulent dilution system generates broad particle size distributions.
Original languageEnglish
Pages (from-to)172-191
JournalJournal of Aerosol Science
Volume38
Issue number2
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

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nucleation
Nucleation
Dilution
dilution
Vapors
Orifices
Particle size analysis
eddy
experiment
Experiments
particle size
Cooling
cooling
modeling
Temperature

Keywords

  • aerosol dynamics
  • aerosol formation
  • nucleation
  • measurements
  • dilution
  • modelling
  • aerosols

Cite this

Pyykönen, J., Miettinen, M., Sippula, O., Leskinen, A., Raunemaa, T., & Jokiniemi, J. (2007). Nucleation in a perforated tube diluter. Journal of Aerosol Science, 38(2), 172-191. https://doi.org/10.1016/j.jaerosci.2006.11.006
Pyykönen, Jouni ; Miettinen, M. ; Sippula, O. ; Leskinen, A. ; Raunemaa, T. ; Jokiniemi, Jorma. / Nucleation in a perforated tube diluter. In: Journal of Aerosol Science. 2007 ; Vol. 38, No. 2. pp. 172-191.
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Pyykönen, J, Miettinen, M, Sippula, O, Leskinen, A, Raunemaa, T & Jokiniemi, J 2007, 'Nucleation in a perforated tube diluter', Journal of Aerosol Science, vol. 38, no. 2, pp. 172-191. https://doi.org/10.1016/j.jaerosci.2006.11.006

Nucleation in a perforated tube diluter. / Pyykönen, Jouni; Miettinen, M.; Sippula, O.; Leskinen, A.; Raunemaa, T.; Jokiniemi, Jorma.

In: Journal of Aerosol Science, Vol. 38, No. 2, 2007, p. 172-191.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Nucleation in a perforated tube diluter

AU - Pyykönen, Jouni

AU - Miettinen, M.

AU - Sippula, O.

AU - Leskinen, A.

AU - Raunemaa, T.

AU - Jokiniemi, Jorma

PY - 2007

Y1 - 2007

N2 - This study investigates the effect of the dilution method on the formation of particles by nucleation during cooling. Nucleation in a perforated tube diluter was studied with experiments and models, using dibutylphthalate (DBP) as the nucleating agent. The experiments demonstrate that nucleation tendencies of various DBP concentrations can be observed in the diluter. Modelling studies were carried out using estimates of DBP nucleation rates from the literature. These indicate that nucleation mostly takes place inside the diluter either at the first orifice rings as some DBP vapour is trapped in low temperature regions or in a similar situation in turbulent eddies when high vapour concentration is still present. The complex turbulent dilution system generates broad particle size distributions.

AB - This study investigates the effect of the dilution method on the formation of particles by nucleation during cooling. Nucleation in a perforated tube diluter was studied with experiments and models, using dibutylphthalate (DBP) as the nucleating agent. The experiments demonstrate that nucleation tendencies of various DBP concentrations can be observed in the diluter. Modelling studies were carried out using estimates of DBP nucleation rates from the literature. These indicate that nucleation mostly takes place inside the diluter either at the first orifice rings as some DBP vapour is trapped in low temperature regions or in a similar situation in turbulent eddies when high vapour concentration is still present. The complex turbulent dilution system generates broad particle size distributions.

KW - aerosol dynamics

KW - aerosol formation

KW - nucleation

KW - measurements

KW - dilution

KW - modelling

KW - aerosols

U2 - 10.1016/j.jaerosci.2006.11.006

DO - 10.1016/j.jaerosci.2006.11.006

M3 - Article

VL - 38

SP - 172

EP - 191

JO - Journal of Aerosol Science

JF - Journal of Aerosol Science

SN - 0021-8502

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ER -

Pyykönen J, Miettinen M, Sippula O, Leskinen A, Raunemaa T, Jokiniemi J. Nucleation in a perforated tube diluter. Journal of Aerosol Science. 2007;38(2):172-191. https://doi.org/10.1016/j.jaerosci.2006.11.006