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Spray atomizer droplet spectrum measurement
Author(s) -
Picot J. J. C.,
Tomey T. D.,
Smedley J. B.,
Kristmanson D. D.
Publication year - 1980
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450580306
Subject(s) - body orifice , calibration , jet (fluid) , measure (data warehouse) , conductance , analytical chemistry (journal) , materials science , mechanics , optics , volumetric flow rate , mass flux , chemistry , physics , mechanical engineering , chromatography , engineering , quantum mechanics , database , computer science , condensed matter physics
The gamma function distribution is used to discuss droplet size variation for flat fan and round orifice atomizers. A technique of using multiple‐probe devices to measure droplet size, distribution and flux when the form of the distribution is known is described. Experimental results with a four‐unit conductance probe device are given for a Spraying Systems Tee‐jet operating with a slightly conducting liquid at 4.2 dm 3 /s and at an air velocity of 75.6 m/s. Probe results give a mass mean diameter of 68 μm while the standard photographie method gives 78 μm. A material balance using probe results gives a liquid flow of 6.0 dm 3 /s. The accuracy of this method is easily improved by adding more units, but the restrictions of conducting liquid and the mechanical problems of probe construction and calibration indicate that optical probes should be investigated.