A unit for electrostatic filter includes: a repeated structure of patterns that are respectively formed of one selected from at least two different substances having different work functions. The patterns formed of the different substances are put in contact with each other. The work functions differ by 1 eV or greater between the different substances put in contact with each other in the patterns.

A unit for electrostatic filter includes: a repeated structure of patterns that are respectively formed of one selected from at least two different substances having different work functions. The patterns formed of the different substances are put in contact with each other. The work functions differ by 1 eV or greater between the different substances put in contact with each other in the patterns.

An electrostatic air precipitator electrode system having collecting electrodes made of a conductive polymer material, preferably a conductive synthetic polymer material. The repelling electrode may be integrated with ion-emitting sites to avoid the necessity of a separate corona electrode in an electrostatic precipitator. Ion emitting structures are portions of the electrode that have very small diameters. Molded ion emitting sites may be in the form of pointed cones or knife-like ridges. Features of reduced diameter to be ion emitting sites may be formed in metallic repelling electrode by mechanical disruption such as punching, cutting, or sawing the repelling electrode at or near the end of the electrode near the inlet end of the particle collecting structure. The repelling electrodes may also be made of a conductive polymer material, preferably a conductive synthetic polymer material.

An electrostatic air precipitator electrode system having collecting electrodes made of a conductive polymer material, preferably a conductive synthetic polymer material. The repelling electrode may be integrated with ion-emitting sites to avoid the necessity of a separate corona electrode in an electrostatic precipitator. Ion emitting structures are portions of the electrode that have very small diameters. Molded ion emitting sites may be in the form of pointed cones or knife-like ridges. Features of reduced diameter to be ion emitting sites may be formed in metallic repelling electrode by mechanical disruption such as punching, cutting, or sawing the repelling electrode at or near the end of the electrode near the inlet end of the particle collecting structure. The repelling electrodes may also be made of a conductive polymer material, preferably a conductive synthetic polymer material.

An air vent system includes a conduit for airflow. A stream of air is moved through the conduit.

An air vent system includes a conduit for airflow. A stream of air is moved through the conduit.

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.

The present invention relates to the use of corrosion, temperature and spark resistant electrically conductive components in wet electrostatic precipitator systems (WESPs). In particular, the present invention is directed to using a conductive composite material in the fabrication of wet electrostatic precipitator system components.

The present invention relates to the use of corrosion, temperature and spark resistant electrically conductive components in wet electrostatic precipitator systems (WESPs). In particular, the present invention is directed to using a conductive composite material in the fabrication of wet electrostatic precipitator system components.