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Title: Acoustic and turbulent agglomeration of sodium aerosols. Quarterly report, January 1, 1977--March 31, 1977

Abstract

Tests of turbulent and acoustic agglomeration of captive sodium fire aerosols at concentrations of 0.1 to 20 gm/m/sup 3/ were conducted in 90 m/sup 3/ and 0.65 m/sup 3/ vessels to evaluate these mechanisms for direct application air cleaning systems. Aerosol mass concentration decay with time was monitored by sequential filter samples. Turbulence was generated mechanically with a 51 cm diameter centrifugal fan impeller and a reverberant acoustic field was created with an electronic siren. The effectiveness of each method over a range of particle concentrations and power densities was evaluated by an agglomeration index, a measurement of particle growth based on sedimentation characteristics. Both turbulent and acoustic treatment markedly enhanced sedimentation rate compared to undisturbed settling. The effectiveness of both methods increased with increasing aerosol mass concentration and increasing power input per unit volume of aerosol. The agglomeration index reached 20 for turbulent agglomeration at an aerosol mass concentration of 3 gm/m/sup 3/ and 7 for acoustic agglomeration at 14 gm/m/sup 3/ when using an acoustic intensity of 145 dB. Turbulent agglomeration was more effective than acoustic agglomeration for the same mass concentration and power density conditions.

Authors:
; ;
Publication Date:
Research Org.:
Harvard Univ., Cambridge, MA (USA)
OSTI Identifier:
7257410
Report Number(s):
COO-2801-6
DOE Contract Number:
EY-76-S-02-2801
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; AEROSOLS; AGGLOMERATION; CONTAINMENT BUILDINGS; LMFBR TYPE REACTORS; AIR CLEANING SYSTEMS; FIRES; SODIUM; SOUND WAVES; TURBULENCE; ALKALI METALS; BREEDER REACTORS; COLLOIDS; CONTAINMENT; DISPERSIONS; ELEMENTS; ENGINEERED SAFETY SYSTEMS; EPITHERMAL REACTORS; FAST REACTORS; FBR TYPE REACTORS; LIQUID METAL COOLED REACTORS; METALS; REACTORS; SOLS; 220900* - Nuclear Reactor Technology- Reactor Safety; 210500 - Power Reactors, Breeding

Citation Formats

Hinds, W., Mallove, E.F., and First, M.W. Acoustic and turbulent agglomeration of sodium aerosols. Quarterly report, January 1, 1977--March 31, 1977. United States: N. p., 1977. Web. doi:10.2172/7257410.
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Hinds, W., Mallove, E.F., & First, M.W. Acoustic and turbulent agglomeration of sodium aerosols. Quarterly report, January 1, 1977--March 31, 1977. United States. doi:10.2172/7257410.
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Hinds, W., Mallove, E.F., and First, M.W. Fri . "Acoustic and turbulent agglomeration of sodium aerosols. Quarterly report, January 1, 1977--March 31, 1977". United States. doi:10.2172/7257410. https://www.osti.gov/servlets/purl/7257410.
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@article{osti_7257410,
title = {Acoustic and turbulent agglomeration of sodium aerosols. Quarterly report, January 1, 1977--March 31, 1977},
author = {Hinds, W. and Mallove, E.F. and First, M.W.},
abstractNote = {Tests of turbulent and acoustic agglomeration of captive sodium fire aerosols at concentrations of 0.1 to 20 gm/m/sup 3/ were conducted in 90 m/sup 3/ and 0.65 m/sup 3/ vessels to evaluate these mechanisms for direct application air cleaning systems. Aerosol mass concentration decay with time was monitored by sequential filter samples. Turbulence was generated mechanically with a 51 cm diameter centrifugal fan impeller and a reverberant acoustic field was created with an electronic siren. The effectiveness of each method over a range of particle concentrations and power densities was evaluated by an agglomeration index, a measurement of particle growth based on sedimentation characteristics. Both turbulent and acoustic treatment markedly enhanced sedimentation rate compared to undisturbed settling. The effectiveness of both methods increased with increasing aerosol mass concentration and increasing power input per unit volume of aerosol. The agglomeration index reached 20 for turbulent agglomeration at an aerosol mass concentration of 3 gm/m/sup 3/ and 7 for acoustic agglomeration at 14 gm/m/sup 3/ when using an acoustic intensity of 145 dB. Turbulent agglomeration was more effective than acoustic agglomeration for the same mass concentration and power density conditions.},
doi = {10.2172/7257410},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Apr 01 00:00:00 EST 1977},
month = {Fri Apr 01 00:00:00 EST 1977}
}
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Technical Report:
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DOI:  10.2172/7257410
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