Accession Number:

AD0420944

Title:

STUDIES OF PORTABLE AIR-OPERATED AEROSOL GENERATORS,

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1963-07-01

Pagination or Media Count:

16.0

Abstract:

Four simple, portable, air-operated aerosol generators were developed. These generators are used to produce polydisperse liquid aerosols. At a given pressure and the consequent flow rate, the polydispersion produced by each generator is reproducible both in term of particle-size distribution and aerosol mass concentration but each generator model differs significantly from the others in total aerosol output as well as particle-size distribution at the same operating pressure. Three of these generators are of the same design using a hole-type nozzle to generate the aerosol. Model I is a small-capacity singlenozzle generator with a jet impactor. Model II is a multinozzle generator of larger capacity without a jet impactor. Model III is an improved single-nozzle generator with a larger capacity than Model I. The Model III has a jet impactor and produces a smaller average particle size than Models I and II. Model IV has a different slittype nozzle which produces a greater quantity of aerosol at the same airflow and with approximately the same average particle size. The only requirements for operation of the aerosol generators are on adequate, filtered, and wellregulated compressed air supply and the liquid to be disseminated. When DOP di2-ethylhexylphthalate is used as the liquid, the dispersed phase of the aerosol system has a light-scattering geometric mean diameter of the magnitude of one-half micron. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE