The present invention provides methods and systems for an ion generation device that includes an elongate housing having a back portion and a pair of side portions extending from the back portion and forming a cavity therein. A conductive portion is disposed within the cavity and connected to a power supply for providing power to the conductive portion. A plurality of tines are engaged to the conductive portion.

The present invention provides methods and systems for an ion generation device that includes an elongate housing having a back portion and a pair of side portions extending from the back portion and forming a cavity therein. A conductive portion is disposed within the cavity and connected to a power supply for providing power to the conductive portion. A plurality of tines are engaged to the conductive portion.

Aspects of the present disclosure include a protective mask to be worn over a nose and mouth of a wearer to protect the wearer from hazards in surrounding ambient air. The mask includes a mask portion, an airway, and an ionization filter. The mask portion includes an interior that extends over the nose and mouth of the wearer. The airway extends between the interior of the mask portion and the surrounding ambient air. The ionization filter includes an emitter within a portion of the airway, and a collector plate radially encompassing the emitter and defining at least a portion of the airway. The collector plate is electrically connected to at least first and second conductive porous filters. The first and second conductive porous filters and the collector plate collectively form at least a portion of a Faraday cage that encapsulates the emitter.

Aspects of the present disclosure include a protective mask to be worn over a nose and mouth of a wearer to protect the wearer from hazards in surrounding ambient air. The mask includes a mask portion, an airway, and an ionization filter. The mask portion includes an interior that extends over the nose and mouth of the wearer. The airway extends between the interior of the mask portion and the surrounding ambient air. The ionization filter includes an emitter within a portion of the airway, and a collector plate radially encompassing the emitter and defining at least a portion of the airway. The collector plate is electrically connected to at least first and second conductive porous filters. The first and second conductive porous filters and the collector plate collectively form at least a portion of a Faraday cage that encapsulates the emitter.

An apparatus to purify fresh air contains at least three types of filters such as high efficient particle filter 5, chemical filter 6 and two stage electrostatic filters 2. The filters are secured to fresh air unit 1 that is secured to the wall 4 or window 11 of the building. Particularly, the present invention contains low noise fan 7 to reduce noises entering from outside. The particle filters and chemical filters are either in rolled form or in plate form with protrusions to have effective filtration. More particularly, the present invention relates to an apparatus for purifying freshly supplied air from outdoor environment and recirculates the indoor air by using new type easily installable and serviceable, filters that are environmentally friendly biodegradable filters.

A power plant is suggested with an additional heat transfer between the flue gas that flows through a flue gas line (5) and the feed-water in a feed-water line (19). The claimed arrangement of the first heat exchanger (13) upstream and adjacent to a precipitator (7) leads to a reduced space demand and optimizes dust precipitation as well as the pressure drop of the flue gas.

The invention relates to a cleaning device for cleaning a gas, in particular air, comprising: a first electrode which is populated with at least one element, preferably a plurality of elements, said at least one element having a surface with a plurality of tips and/or protrusions in order to generate a non-homogeneous electromagnetic field, a second electrode which preferably lies opposite the first electrode, and a voltage source which is electrically connected to the first electrode and/or the second electrode and by means of which a voltage can be built up between the first electrode and the second electrode.

A filter for an electrostatic precipitator comprising: a plurality of spaced-apart, electrode films having electrical conductivity, arranged to be alternately powered at high and low electrical potentials, each of said electrode films having a leading edge, a trailing edge and two opposing side edges therebetween that extend in the direction of airflow; and first and second pluralities of spaced-apart, rigid isolation members bonded to each of the leading and trailing edges of the plurality of electrode films respectively, wherein each isolation member is bonded, via a substantially continuous, preferably flat, surface thereof, to at least some of said leading or trailing edges, thereby fixing the electrode films in the required spaced-apart arrangement thereof.

The invention relates to a method and device for collecting particles which may be present in an aerosol. The invention consists in electrostatically collecting all the particles in an aerosol, but uncoupling mechanisms of particle charging by unipolar ion diffusion, for charging then collecting the finest particles, from particle charging by a corona effect electrical field, for charging then collecting the biggest particles in a different collection zone from the collection zone for the finest particles. The invention also relates to the use of such a device as ionisation chamber or for evaluating the exposure of workers or consumers to nanoparticles.

The invention relates to a method and device for collecting nanoparticles which may be present in an aerosol. The invention consists of electrostatically collecting nanoparticles contained in an aerosol by a mechanism of particle charging by unipolar ion diffusion, followed by the application of a field without a corona effect, which makes it possible to deposit the particles in concentric rings on different parts of a single flat substrate oriented orthogonally to the aerosol circulation direction. The biggest particles are deposited towards the centre of the flat substrate and the finest particles towards the periphery of the flat substrate. The invention also relates to a method of operation and to the use of such a device for evaluating the exposure of workers or consumers to nanoparticles.