Electrostatic fibrous air filters: a theoretical study. Final report

Technical Report · Sat Sep 01 00:00:00 EDT 1979

OSTI ID:5222602

Banks, D O; Boyles, R A

A model of fibrous air filters is given which accounts for the inhomogeneity of the filter by assuming that the packing density and the fiber radius are random variables. Using the cell models of Happel and Kuwabara, a form of Darcy's Law for the pressure drop is derived in terms of appropriate averages of the local permeability. The resulting local mean velocity is then used to get formulas for the particle penetration through the filter. The influence of diffusion in the case of flow parallel to the filter fibers is investigated. Finally, a means of computing the single fiber efficiency in the case of externally electrified air filters is presented.

• Research Organization: California Univ., Davis (USA). Dept. of Mathematics
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5222602
• Report Number(s): UCRL-15137
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420202* -- Engineering-- Protective Structures & Equipment
AIR FILTERS
DATA
EFFICIENCY
ELECTRIC CHARGES
ELECTROSTATICS
EQUIPMENT
FIBERS
FILTERS
FLOW RATE
FLUID FLOW
GAS FLOW
INFORMATION
MATHEMATICAL MODELS
NUMERICAL DATA
PERFORMANCE
POLLUTION CONTROL EQUIPMENT
PRESSURE DROP
THEORETICAL DATA