||Electrostatic Precipitator Backup Filter for Sampling Systems.
Bush, P. Vann ;
Hussey, David H. ;
Pontius, Duane H. ;
Smith, Wallace B. ;
Harris, D. Bruce ;
||Southern Research Inst., Birmingham, AL.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Air pollution control equipment ;
Electrostatic precipitators ;
Performance evaluation ;
Air pollution sampling ;
||Some EPA libraries have a fiche copy filed under the call number shown.
An alternative technique for filtering the aerosol effluent from particle sampling systems has been developed. A two-stage electrostatic precipitation system was designed to collect with high efficiency the particulate material in a gas stream. The principal advantage of an electrostatic precipitator over conventional glass fiber backup filters is the ability to sample for long times without encountering filter pluggage or an excessive pressure differential across the system. Tests of a prototype electrostatic precipitator backup indicate collection efficiency for submicrometer diameter particles of 97 to greater than 99%.