Measurements of the size distribution of aerosols produced by ultrasonic humidification

C. Rodes, T. Smith, R. Crouse, Gurumurthy Ramachandran

Research output: Contribution to journalArticle

Abstract

Aerosol number and mass distributions produced by an ultrasonic room humidifier and an ultrasonic medical nebulizer were examined in a limited-scale study. Rapid droplet drying occurred at room humidities and under near saturated conditions. A model was tested describing the diameter of dried particles as a function of the dissolved mineral content of the water and the transducer frequency. Water containing 102 mg/L of dissolved minerals in a humidifier with a 1.6 MHz transducer produced droplets with a mass median diameter of 2.9 μm. The number median diameter of particles after drying was computed to be 0.11 μm. The distribution of particles in a nebulizer tube using a NaCl solution was shown to consist of a mixture of dried salt particles and droplets which included coagulated multiplets.

Original languageEnglish (US)
Pages (from-to)220-229
Number of pages10
JournalAerosol Science and Technology
Volume13
Issue number2
DOIs
StatePublished - Jan 1 1990
Externally publishedYes

Fingerprint

Aerosols
Ultrasonics
aerosol
droplet
Transducers
Drying
Minerals
transducer
Mineral Waters
Water
Atmospheric humidity
mineral
Salts
humidity
salt
water
particle
drying
distribution

ASJC Scopus subject areas

  • Materials Science(all)
  • Pollution
  • Environmental Chemistry
  • Environmental Science(all)
  • Mechanical Engineering

Cite this

Measurements of the size distribution of aerosols produced by ultrasonic humidification. / Rodes, C.; Smith, T.; Crouse, R.; Ramachandran, Gurumurthy.

In: Aerosol Science and Technology, Vol. 13, No. 2, 01.01.1990, p. 220-229.

Research output: Contribution to journalArticle

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