Abstract:
An electrohydrodynamic fluid accelerator apparatus includes a corona electrode having an axial shape and configured to receive a first voltage. The electrohydrodynamic fluid accelerator apparatus includes a collector electrode disposed coaxially around the at least one corona electrode and configured to receive a second voltage. Application of the first and second voltages on the corona electrode and the collector electrode, respectively, causes fluid proximate to the corona electrode to ionize and travel in a first direction between the corona electrode and the collector electrode, thereby causing other fluid molecules to travel in a second direction to generate a fluid stream. In at least one embodiment of the invention, the ionized fluid proximate to the emitter electrode travels in a radial direction from the corona electrode to the collector electrode, causing the other fluid molecules to travel in an axial direction to thereby generate the fluid stream.
Abstract:
According to the invention, particles of an aerosol are firstly charged in a unipolar manner in a diffusion charger (10). They are subsequently led through a diffusional precipitator (20) in which a part of the particles is precipitated. The diffusional precipitator current is measured and a value for the number concentration is evaluated from the current. A single diffusional precipitator may be used for this. According to preferred embodiment, a means for measuring the influence current and/or an aerosol electrometer are additionally present, by way of which one may measure a complete current. The latter additionally permits the evaluation of the average particle size. Additionally, one may determine an elementary carbon total quantity from the average particle size with the help of a measurement of the photoelectric charging carried out in parallel.
Abstract:
An electrostatically charged rotating plate or cylinder is used to attract electrostatically charged particles in smoke to avoid pollution and improve the efficiency of the filtering process. The rotating plate is constantly cleaned from the ionized particles adhering to it and the particles so collected are removed without polluting the environment. This filtering system reduces capital and running costs compared with the present filtering systems.
Abstract:
An apparatus for preventing wear of an electrode holder on a discharge electrode frame of an electrostatic precipitator includes an electrically conductive member having a central portion generally contoured to a shape of an electrode holder. The apparatus is fastened to at least one of the electrode holder and an end portion of a discharge electrode such that, when the end portion of the discharge electrode is attached to the electrode holder, the electrically conductive member is disposed between the end portion of the discharge electrode and the electrode holder.
Abstract:
An electro-kinetic electro-static air conditioner that can include a self-contained ion generator that provides electro-kinetically moved air with ions. The ion generator can include a high voltage pulse generator whose output pulses are coupled between first and second electrode arrays. An air conditioner device can include a first electrode array and a second electrode array. Self-cleaning mechanisms are disclosed including a mechanism that cleans the electrode(s) in a first electrode array having a length of material that projects from a movable member in the housing towards the first electrode array. As a user moves the second electrode array up or down within the conditioner housing, the electrode(s) in the first array is frictionally cleaned.
Abstract:
A duct for the transmission of an air flow therethrough is provided with a plurality of parallel plates oriented parallel to the air flow. The plates have aligned holes therethrough and are connected to a source of alternating current voltage for generating alternating current electric fields in the region of the holes. The electrical forces generated by the electric fields trap charged particles in the air flow and direct them through the holes to the sides of the duct for collection and subsequent removal. The trapping of the particles is enhanced by coating the plates with a high dielectric strength material.