||Onset of electrical breakdown in dust layers: 2 : effective dielectric constant and local field enhancement /
Young, R. P. ;
DuBard, J. L. ;
Sparks, L. E.
||Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. ;Southern Research Inst., Birmingham, AL.
|| U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory,
Dust control ;
Dielectric properties ;
Electrical faults ;
Electric fields ;
Electrostatic precipitators ;
Air pollution control equipment ;
Test chambers ;
Numerical analysis ;
Debye-Scherer method ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||8 pages ; 28 cm
Part 1 of the work has shown that electrical breakdown in dust layers obeys Paschen's Law, but occurs at applied field values which appear too small to initiate the breakdown. In the paper the authors show how an effective dielectric constant characterizing the dust layer can be determined from AC dielectric measurements and the theory of Debye. When combined with an expression for the enhanced local electric field in the void spaces between particles in the layer, field strengths which are large enough to initiate electrical breakdown in the layer are predicted at relatively low values of applied field. The effect of temperature and dust layer thickness on the onset of electrical breakdown within the dust layer can also be explained by the dependence of the effective dielectric constant on these parameters. (Copyright (c) APCA, 1988.)
"Journal article." "EPA/600/J-88/289." "Published in JAPCA, 38:12, pp. 1518-1522, December 1988. Part 1 published in JAPCA, 38:11, pp 1412-1418, November 1988." "Leslie E. Sparks, project officer/author." Microfiche.