On the determination of electrostatic precipitator efficiency by differential mobility analyzer

Ylätalo, S; Kauppinen, Esko I.; Hautanen, Jukka; Joutsensaari, Jorma; Ahonen, Petri; Lind, Terttaliisa; Jokiniemi, Jorma; Kilpeläinen, Markku

doi:10.1016/0021-8502(92)90531-y

Cited by 11 publications

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“…The most commonly used flue gas cleaner in these circumstances is the electrostatic precipitator (ESP). According to the studies of Ylatalo et al (1992), the total mass collection efficiency with the ESP can be over 99.7%, while the collection efficiency for the above mentioned range can be only 85%.…”

Section: Introductionmentioning

confidence: 99%

Kinematic Coagulation of Charged Droplets in an Alternating Electric Field

Lehtinen

Jokiniemi

Kauppinen

et al. 1995

Aerosol Science and Technology

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An analytic-numerical model has been developed to study kinematic coagulation caused by the vibrational motion of charged particles in an alternating electric field. The primary aim of this study was to find out the reduction in the number concentration of fine particles of diameter 0.1 pm-1.0 p m caused by collisions with larger, supermicron particles. Three cases are considered: (1) unipolar charging, (2) fine particles are neutral, and (3) fine particles and large particles have opposite polarity. We find out that in cases 1 and 2 the rate of kinematic coagulation in negligible and in case 3 significant. The results are demonstrated with two sample calculations with total mass loadings of 2 and 20 g/m< In the former, where the mass median diameter is 3.0 pm, we discover a 20%-50% reduction in number concentration of particles in the range 0.5-1.0 pin and less significant reduction in srnaller particles. The latter (MMD = 6.0 pm) represents power plant conditions. In this case the reduction varies from 10% (0.1 pm) to 95% (1.0 pm). Acrowl Scicncc and Technology 23:422-410 (1WS)

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Section: Introductionmentioning

confidence: 99%