UNCLASSIFIED
Equations are developed here for computing the displacements of
droplets and their rates of displacement as a function of the angular
displacement and rotating speed of the prism. Also discussed are the
limits of displacement and velocity of droplets that can be observed.
‘ORNL - 1660
-
A SERVOMECHANISM FOR MEASURING AEROSOL PARTICLE SIZE AND
A SERVOMECHANISM FOR CONTROLLING PARTICLE SIZE IN THE
DIOCTYLPHTHALATE AEROSOL GENERATOR.
R. Louis Bradshaw, 29 January 1954.
UNCLASSIFIED
(uv)
Described herein is a servomechanism which continuously measures
and records the particle size of homogeneous aerosols ranging from approximately 0.1 p to 0.2 p in radius. The principles of operation are explained
and limitations of the instrument discussed with suggestions for improving
its operation.
Circuit diagrams and photographs of the instrument are
shown.
A servomechanism for controlling particle size in the dioctylphthalate aerosol generator is also described.
The principles of operation
are explained and results of tests of the mechanism made on an analog of
the generator are discussed.
Reasons are advanced for the unsatisfactory
operation of the instrument when applied to the actual generator, and
suggestions for its improvement are made.
ORNL - 1666
-
SOLID AEROSOL GENERATION.
W. D. Cottrell, 5 February 1954.
UNCLASSIFIED
(v)
The problem under investigation was that of generating a
homogeneous
for aerosol
homogeneous
droplets to
solid aerosol in sufficient concentration to permit its use
studies.
The approach was by generating an aerosol of
liquid droplets from a suitable solution and then drying the
form solid particles.
Several types of generators were investigated, the most promising
being a highsreed airtop.
The airtop was rotated at speeds up to approximately 20,0CO rpm and gave liquid droplets as small as 20 yp in diameter.
The minimem size of solid particles that could be produced from the
UNCLASS/FIED
» yl
i
droplets was rot determined.