Abstract: A device for generating ozone from oxygen-containing gas by silent electric discharge, the device including an electrode arrangement having at least one high-voltage electrode and at least one annular ground electrode. An annular dielectric is arranged between the at least one high-voltage electrode and the at least one ground electrode. The at least one high-voltage electrode is surrounded by at least one annular heat pipe.

Abstract: A device for generating ozone from oxygen-containing gas by silent electric discharge. At least two high-voltage electrodes and at least one ground electrode are nested. A discharge gap is defined between each high-voltage electrode and adjacent ground electrode. A dielectric is arranged in each discharge gap. In one embodiment, at least two discharge gaps are traversed by the gas, and a different voltage is applied to each gap according to the individual gap width. In another embodiment, filler material is arranged in an interstice between the high-voltage electrode and the corresponding dielectric, and the same amount of power is applied to each discharge gap.

Abstract: A dielectric barrier VUV excimer lamp has an elongated dielectric tube for holding an excimer-forming gas, a first electrode disposed within the dielectric tube, and a second electrode arranged outside of the dielectric tube. The first electrode is a wire electrode disposed along a centre axis of the dielectric tube, axially symmetric with respect to the centre axis, and physically connected to each end of the dielectric tube. The dielectric barrier VUV excimer lamp is an AC dielectric barrier discharge VUV excimer lamp or the dielectric barrier VUV excimer lamp is a pulsed DC dielectric barrier discharge VUV excimer lamp. A photochemical system has the dielectric barrier VUV excimer lamp. An excimer lamp system has the dielectric barrier VUV excimer lamp, and also has a power supply to supply electric power to the first electrode and the second electrode.

Abstract: A VUV excimer lamp has a dielectric tube for holding an excimer-forming gas, a first electrode disposed within the dielectric tube, and a second electrode arranged outside of the dielectric tube. The first electrode has an outer diameter less than 0.5 mm, is elongated, and includes at least one thin wire with an outer diameter between 0.02 mm and 0.4 mm. The thin wire is an elongated thin wire, and is substantially straight and defines a straight axis of elongation. A photochemical system has the VUV excimer lamp. An excimer lamp system has the VUV excimer lamp, and also has a power supply to supply AC electric power to the first electrode and the second electrode.

Abstract: A method for controlling an ozone generator with a high-voltage electrode, at least one counter electrode, and a gap in which at least one dielectric is arranged and which is perfused by an oxygen-containing gas having a particle density ngas. The high-voltage electrode and the at least one counter electrode are provided with a connection for an electrical voltage supply for generating silent discharges in at least one discharge gap. Striking distances d of the discharge are distributed between a minimum striking distance dmin and a maximum striking distance dmax. For the generation of an ozone concentration >12 wt. % ozone, the voltage amplitude U0 of an AC voltage on the electrical voltage supply is selected so that U0<130*10?21 V*m2*ngas*dmax*(CDL+Cg)/CDL, with CDL=capacitance of the dielectric and Cg=capacitance of the discharge gap.

Abstract: A device for generating ozone from oxygen-containing gas by silent electric discharge. At least two high-voltage electrodes and at least one ground electrode are nested. A discharge gap is defined between each high-voltage electrode and adjacent ground electrode. A dielectric is arranged in each discharge gap. In one embodiment, at least two discharge gaps are traversed by the gas, and a different voltage is applied to each gap according to the individual gap width. In another embodiment, filler material is arranged in an interstice between the high-voltage electrode and the corresponding dielectric, and the same amount of power is applied to each discharge gap.

Abstract: A device for generating ozone from oxygen-containing gas by silent electric discharge, the device including an electrode arrangement having at least one high-voltage electrode and at least one annular ground electrode. An annular dielectric is arranged between the at least one high-voltage electrode and the at least one ground electrode. The at least one high-voltage electrode is surrounded by at least one annular heat pipe.

Abstract: An ozone generator with a high voltage electrode and at least one counter electrode which limit a gap in which at least one dielectric is arranged and which is flowed through by a gas flow in the direction of flow. The high voltage electrode and the at least one counter electrode are provided with a connection for an electrical power supply to generate silent discharges. A fabric is arranged in the gas flow. The fabric includes a material combination including at least one wire and at least one electrically non-conductive fiber.

Abstract: An ozone generator with a high voltage electrode and at least one counter electrode which limit a gap in which at least one dielectric and an electrically non-conductive structure are arranged and through which a stream of gas flows in a direction of flow. The high voltage electrode and the at least one counter electrode are provided with a connection for an electrical voltage supply in order to generate silent discharges. The electrically non-conductive structure contains pores with a nominal pore size (x) of 100 ?m<x<1 mm.

Abstract: An ozone generator includes a high-voltage electrode and at least one counter electrode, which define an interstice in which at least one dielectric is arranged and through which a gas flows in the flow direction. The high-voltage electrode and the at least one counter electrode are provided with a connection for an electrical voltage supply to generate silent discharges which are discharged from surface discharge locations. The mean sparking distance and the mean spacing between the high-voltage electrode and the at least one counter-electrode are constant. The number of surface discharge locations decreases in the flow direction.

Abstract: A method for producing ozone at elevated pressure with a capacity of at least 1 kg ozone/hour by an ozone generator having a high voltage electrode and a counter electrode. The electrodes delimit a gap in which a dielectric is arranged and through which a gas containing oxygen and having a gas pressure of pgas flows. The high voltage electrode and the counter electrode with a connection for an electric power supply to generate discharges are provided in at least one discharge gap. The power supply provides a voltage in a range from 1 kV to 50 kV and wherein stroke widths di of the discharge are distributed between a minimum stroke width dmin and a maximum stroke width dmax. The gas pressure pgas of the gas containing oxygen at the outlet of the ozone generator is at least 3 bar.

Abstract: An ozone generator includes a high-voltage electrode and at least one counter electrode, which define an interstice in which at least one dielectric is arranged and through which a gas flows in the flow direction, the high-voltage electrode and the at least one counter electrode being provided with a connection for an electrical voltage supply to generate silent discharges, and a wire fabric being arranged in the gas flow and its density decreasing in the flow direction.

Abstract: A method for controlling an ozone generator with a high-voltage electrode, at least one counter electrode, and a gap in which at least one dielectric is arranged and which is perfused by an oxygen-containing gas having a particle density ngas. The high-voltage electrode and the at least one counter electrode are provided with a connection for an electrical voltage supply for generating silent discharges in at least one discharge gap. Striking distances d of the discharge are distributed between a minimum striking distance dmin and a maximum striking distance dmax. For the generation of an ozone concentration>12 wt. % ozone, the voltage amplitude U0 of an AC voltage on the electrical voltage supply is selected so that U0<130*10?21 V*m2*ngas*dmax*(CDL+Cg)/CDL, with CDL=capacitance of the dielectric and Cg=capacitance of the discharge gap.

Abstract: An ozone generator with a high voltage electrode and at least one counter electrode which limit a gap in which at least one dielectric is arranged and which is flowed through by a gas flow in the direction of flow. The high voltage electrode and the at least one counter electrode are provided with a connection for an electrical power supply to generate silent discharges. A fabric is arranged in the gas flow. The fabric includes a material combination including at least one wire and at least one electrically non-conductive fiber.

Abstract: An ozone generator includes a high-voltage electrode and at least one counter electrode, which define an interstice in which at least one dielectric is arranged and through which a gas flows in the flow direction. The high-voltage electrode and the at least one counter electrode are provided with a connection for an electrical voltage supply to generate corona discharges which are discharged from surface discharge locations. The mean sparking distance and the mean spacing between the high-voltage electrode and the at least one counter-electrode are constant. The number of surface discharge locations decreases in the flow direction.

Abstract: A control algorithm for operating a fluid disinfecting system by UV radiation, wherein the UV radiation is generated by at least one UV lamp including a pair of heating cathodes having a discharge voltage (UD), the UV lamp is operated by an electronic ballast unit equipped with the control algorithm for adjusting the UV power of the UV lamp by pulse-width-modulation to reduce UV power. The control algorithm decreases the current to a level (Ikmin), increases the voltage amplitude (U) above the discharge voltage (UD) until a desired UV power level is reached. The pulse width (PW) is decreased with increasing voltage amplitude (U) until PWmin is reached. The decrease in current and the increase in voltage generate an ineffective current-voltage-ratio in which excess current heats the cathode. An electronic ballast equipped with the algorithm and systems equipped with such ballasts are also disclosed.

Abstract: An ozone generator with a high voltage electrode and at least one counter electrode which limit a gap in which at least one dielectric and an electrically non-conductive structure are arranged and through which a stream of gas flows in a direction of flow. The high voltage electrode and the at least one counter electrode are provided with a connection for an electrical voltage supply in order to generate silent discharges. The electrically non-conductive structure contains pores with a nominal pore size (x) of 100 ?m<x<1 mm.

Abstract: An ozone generator includes a high-voltage electrode and at least one counter electrode, which define an interstice in which at least one dielectric is arranged and through which a gas flows in the flow direction, the high-voltage electrode and the at least one counter electrode being provided with a connection for an electrical voltage supply to generate silent discharges, and a wire fabric being arranged in the gas flow and its density decreasing in the flow direction.

Abstract: A control algorithm for operating a fluid disinfecting system by UV radiation, wherein the UV radiation is generated by at least one UV lamp including a pair of heating cathodes having a discharge voltage (UD), the UV lamp is operated by an electronic ballast unit equipped with the control algorithm for adjusting the UV power of the UV lamp by pulse-width-modulation to reduce UV power. The control algorithm decreases the current to a level (Ikmin), increases the voltage amplitude (U) above the discharge voltage (UD) until a desired UV power level is reached. The pulse width (PW) is decreased with increasing voltage amplitude (U) until PWmin is reached. The decrease in current and the increase in voltage generate an ineffective current-voltage-ratio in which excess current heats the cathode. An electronic ballast equipped with the algorithm and systems equipped with such ballasts are also disclosed.

Abstract: An electrode arrangement for an ozone generator includes a tubular dielectric which concentrically encloses a rod at a distance therefrom, and a filler material provided in an interstice between the tubular dielectric and the rod.