Characterization of the atmospheric electrical environment near a corona ion-emitting source
(2008) Characterization of the atmospheric electrical environment near a corona ion-emitting source . Atmospheric Environment 42(7):pp. 1607-1616.
Full text available as: |
Abstract
Presence of high concentrations of corona ions in any air environment cause changes in the earth’s natural dc e-field; while their interaction with airborne aerosols produce charged particles. The charged particles and ions are dispersed by wind, and depending on the prevailing meteorology, their presence can be observed several hundreds of meters from the ion source. This paper presents a study characterizing the electrical environment of a strong substantially-constant source of corona ions (a high voltage electricity substation). Results of the study showed that corona ion and particle charge concentrations as well as their associated effect on the vertical dc e-field perturbations decreased with distance from the emitting source. Mean particle charge concentration in the air environment of the ion emitting source (-1750 ± 745 ions cm-3) was three times higher than that of an urban outdoor air and seventeen times that of a mechanically ventilated room. Statistical investigation of possible associations between parameters showed strong associations (R2 = 74%, P<0.05) between particle charge and ion concentration; and 54% correlation between particle charge and magnitude of the vertical dc e-field (mean value of -285 ± 51 V m-1). Although a source of ambient electrical charge, the electricity substation was not a significant generator of aerosol particles within the size range (0.02 to 1 μm) examined in this study.
| Item Type: | Journal Article |
|---|---|
| Status: | Published |
| Keywords: | Ambient aerosol, charged particle, corona discharge, high voltage, transmission substation. |
| Subjects: | 240000 Physical Sciences > 240500 Classical Physics > 240504 Electrostatics and Electrodynamics 240000 Physical Sciences > 249900 Other Physical Sciences > 249999 Physical Sciences not elsewhere classified 260000 Earth Sciences > 260600 Atmospheric Sciences > 260699 Atmospheric Sciences not elsewhere classified |
| ID Code: | 12521 |
| Deposited By: | Robinson, Rachael |
| Deposited On: | 19 February 2008 |
| Alternative Locations: | http://dx.doi.org/10.1016/j.atmosenv.2007.10.090 |
| Copyright Owner: | Copyright 2008 Elsevier |
| Copyright Statement: | Reproduced in accordance with the copyright policy of the publisher. |