Scavenging of soot particles by ice crystals
| Autor: | R. G. Oraltay, John Hallett |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Fluid Flow and Transfer Processes
Atmospheric Science Environmental Engineering Materials science Ice crystals Scanning electron microscope Mechanical Engineering Analytical chemistry Mineralogy medicine.disease_cause Thermal diffusivity Pollution Soot Amorphous ice medicine Supercooling Saturation (chemistry) Scavenging |
| Zdroj: | Journal of Aerosol Science. 21:S263-S266 |
| ISSN: | 0021-8502 |
| DOI: | 10.1016/0021-8502(90)90234-o |
| Popis: | Scavenging efficiency of polydisperse soot particles in two size ranges (submicron to 10 μm and submicron to 1 μm) by ice crystals was investigated in the laboratory. Ice crystals-ware grown, evaporated or kept at ice saturation under controlled temperature, saturation and air flow velocity in a dynamic thermal diffusion chamber in the presence of polydisperse soot particles. Crystals were also grown in a supercooled cloud in a cold box filled with polydisperse soot. Scanning electron micrographs of ice crystals replicas revealed that soot particles were scavenged most effectively by the growing ice crystals in the submicron to 10 μm range. In the submicron range growing crystals were more effective scavengers than the ones which were kept at ice saturation, evaporating ice crystals had the least collection efficiency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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