|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 6 van 7 gevonden artikelen
| Titel: |
Particle Filter Based on Thermophoretic Deposition from Natural Convection Flow |
| Auteur: |
Sasse, A. G. B. M. Nazaroff, W. W. Gadgil, A. J. |
| Verschenen in: |
Aerosol science and technology |
| Paginering: | Jaargang 20 (1994) nr. 3 pagina's 227-238 |
| Jaar: |
1994 |
| Inhoud: |
We present an analysis of particle migration in a natural convection flow between parallel plates and within the annulus of concentric tubes. The flow channel is vertically oriented with one surface maintained at a higher temperature than the other. Particle migration is dominated by advection in the vertical direction and thermophoresis in the horizontal direction. From scale analysis it is demonstrated that particles are completely removed from air flowing through the channel if its length exceeds Lc = (b4g/24Kv2), where b is the width of the channel, g is the acceleration of gravity, K is a thermophoretic coefficient of order 0.5, and v is the kinematic viscosity of air. Precise predictions of particle removal efficiency as a function of system parameters are obtained by numerical solution of the governing equations. Based on the model results, it appears feasible to develop a practical filter for removing smoke particles from a smoldering cigarette in an ashtray by using natural convection in combination with thermophoresis. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 7 gevonden artikelen
| << vorige | volgende >> |