TITLE

Performance Evaluation of an Air Assisted Atomizer with Liquid Siphon

AUTHOR(S)
Jiafeng Yao; Keiichi Tanaka; Akimaro Kawahara; Michio Sadatomi
PUB. DATE
November 2013
SOURCE
Journal of Applied Sciences;2013, Vol. 13 Issue 22, p4985
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Experimental studies were conducted for a special air assisted atomizer patented by Sadatomi and Kawahara (2012); in which atomization is attained by supplying the pressurized air alone into a mixing chamber inside the nozzle, and water can be sucked automatically with siphon principle. Since the energy for atomization is only supplied by an air compressor, consumption of energy to produce a fine spray is lower than usual twin-fluid-type atomizers. In our previous study, experimental and analytical results for the atomizer of small size with outlet of 7 mm i.d. were reported. In the present paper, in order to test the scaling capability of the atomizer, similar experiments have been conducted for that of medium size with outlet of 14 mm i.d. In the experiments, atomizers with a series of outlets in different lengths were tested since some spraying effects (vacuum pressure, diameter of droplet, etc.) are considered to be influenced by the lengths of outlet. In addition, six types of PET (Polyethylene Terephthalate) propellers with different blades and outer diameters were tested to expand the spray dispersion. After the optimization of the middle sized atomizer, comparisons of atomization performance were made between the two sized atomizers, and the superiority of the small sized atomizer was confirmed.
ACCESSION #
91943486

 

Related Articles

  • Development of an Air Assisted Fuel Atomizer (Liquid Siphon Type) for a Continuous Combustor. Watanawanyoo, Pipatpong; Chaitep, Sumpun; Hirahara, Hiroyuki // American Journal of Applied Sciences;2009, Vol. 6 Issue 3, p380 

    This research was the study of a fuel injection system in continuous combustor. Air atomizing nozzle is developed to good efficiency injection and used low air pressure (68.95- 275.79kPa) to assist the atomizing nozzle. Refined palm oil and automotive diesel oil were the fuels for the experiment...

  • Micrometer-sized nozzles and skimmers for the production of supersonic He atom beams. Braun, J.; Day, P.K.; Toennies, J.P.; Witte, G. // Review of Scientific Instruments;Aug1997, Vol. 68 Issue 8, p3001 

    Describes micrometer-sized nozzles and skimmers made from drawn glass tubes and their production of highly monoenergetic helium atom beams. Measured speed ratios of the intense beams provided by the glass nozzles; Reduction of the size of helium-atom surface-scattering time-of-flight...

  • Multinozzle gas-dynamic molecular-beam source. Yashchuk, V. V.; Ezhov, V. F.; Krygin, G. B.; Ryabov, V. L. // Technical Physics Letters;Oct97, Vol. 23 Issue 10, p795 

    The results of an experimental investigation of a multinozzle gas-dynamic molecular-beam source, in which the working material is introduced directly into a supersonic jet of a buffer gas, are presented. The source is designed to create slow cold beams of atoms and molecules. Time-of-flight...

  • Measurements of drop size at the spray edge near the nozzle in atomizing liquid jets. Wu, K-J.; Reitz, R. D.; Bracco, F. V. // Physics of Fluids (00319171);Apr86, Vol. 29 Issue 4, p941 

    The drop size distribution was measured from back-lighted spark photographs at the edge of steady sprays in the immediate vicinity of the nozzle exit. The conditions of these liquid-into-gas sprays were such that the outer surface of the liquid jets broke up into small drops at the nozzle exit....

  • Impinging jets atomization. Ibrahim, E. A.; Przekwas, A. J. // Physics of Fluids A;Dec91, Vol. 3 Issue 12, p2981 

    An analysis of the characteristics of the spray produced by an impinging-jet injector is presented. Predictions of the spray droplet size and distribution are obtained through studying the formation and disintegration of the liquid sheet formed by the impact of two cylindrical jets of the same...

  • Angled potato nozzle helps reduce drift. Blake, Andrew // Farmers Weekly;3/12/2010, Vol. 152 Issue 10, p58 

    The article evaluates the Long-Life Potato nozzle.

  • Universal Control Coat Nozzles.  // Nonwovens Industry;Jun2005, Vol. 36 Issue 6, p73 

    Features Nordson Corp.'s Universal Control Coat nozzles.

  • Study of the Aerodynamic Characteristics of Chevron Nozzles on the Basis of a Numerical Calculation of the Flowfield. Brailko, I.; Krasheninnikov, S. // Fluid Dynamics;Mar2005, Vol. 40 Issue 2, p233 

    The flow in a convergent nozzle equipped with chevrons and the flow around the chevrons are numerically simulated and studied on the basis of the numerical integration of the system of Reynolds equations closed by a differential model for the turbulent viscosity. From the calculated results, the...

  • Influence of nozzle sharpness on the flow fields of V-notched nozzle jets. New, T. H.; Tsovolos, D. // Physics of Fluids;Aug2009, Vol. 21 Issue 8, p084107 

    This study reports on an experimental investigation on laminar jets discharging from V-notched nozzles of different relative sharpness. Each nozzle consists of two smooth peaks and two sharp troughs and its sharpness is defined by the aspect ratio (AR) of the half ellipses which make up each...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics