Abstract: A multi-stage variable type waste heat storage and recovery apparatus and method thereof are disclosed. The apparatus includes a phase change material storage unit for separating and arranging a plurality of phase change materials having different melting points, and arranging them in stages on a path of the waste heat so that a phase change material having a higher melting point is located closer to an inlet side of the waste heat; a use place registration unit; a temperature range storage unit; a phase change material selection unit for selecting a phase change material of a corresponding melting point; and a heat energy supply unit for supplying heat energy by the latent heat of the phase change material selected by the phase change material selection unit to a corresponding heat energy use place among a plurality of heat energy use places.

Abstract: A nitrogen oxide reduction type regenerative thermal oxidation system and a method for nitrogen oxide reduction thereof are disclosed. The nitrogen oxide reduction type regenerative thermal oxidation system according to the present invention is characterized by comprising: a first reduction device for primarily reducing nitrogen oxides generated by a regenerative thermal oxidation device based on a selective non-catalytic reduction method; an exhaust gas storage device for storing the exhaust gas being discharged from the regenerative thermal oxidation device; a second reduction device for secondarily reducing nitrogen oxides based on a selective catalytic reduction method for an exhaust gas stored in the exhaust gas storage device; and a suction and discharge device for sucking in the exhaust gas with secondarily reduced nitrogen oxides from the exhaust gas storage device and discharging it into the atmosphere.

Abstract: A VOC adsorption-desorption apparatus for volatile organic compound condensing system is disclosed. The VOC adsorption-desorption apparatus according to the present invention is characterized by comprising: an upper plate having a circular hole formed in the center of a circular plate; a lower plate having a diameter smaller than the outer diameter of the upper plate but larger than the diameter of the hole; a filter installed between the upper plate and the lower plate and around a through hole being extended from the hole of the upper plate toward the lower plate; and a filter protection net formed in the shape of a net and being extended from an outer circumference of the upper plate to an outer circumference of the lower plate to surround the filter.

Abstract: A volatile organic compound condensation system and method thereof for enhancing drying efficiency of a filter using VOC condensation heat including high-temperature steam condensation heat are disclosed. A volatile organic compound condensing system according to the present invention is characterized by comprising: an adsorption-desorption unit repeating an adsorption process of adsorbing volatile organic compound (VOC) from a supply gas and a desorption process of desorbing the adsorbed VOC by supplying high-temperature steam to the VOC adsorbed by the adsorption process; a condensation heat storage unit for storing VOC condensation heat being generated in the adsorption-desorption unit by using phase change material (PCM); and a drying control unit that dries the adsorption-desorption unit after the desorption process by using the condensation heat stored in the condensation heat storage unit.

Abstract: A nitrogen oxide reduction type regenerative thermal oxidation system and a method for nitrogen oxide reduction thereof are disclosed. The nitrogen oxide reduction type regenerative thermal oxidation system according to the present invention is characterized by comprising: a first reduction device for primarily reducing nitrogen oxides generated by a regenerative thermal oxidation device based on a selective non-catalytic reduction method; an exhaust gas storage device for storing the exhaust gas being discharged from the regenerative thermal oxidation device; a second reduction device for secondarily reducing nitrogen oxides based on a selective catalytic reduction method for an exhaust gas stored in the exhaust gas storage device; and a suction and discharge device for sucking in the exhaust gas with secondarily reduced nitrogen oxides from the exhaust gas storage device and discharging it into the atmosphere.

Abstract: A multi-stage variable type waste heat storage and recovery apparatus and method thereof are disclosed. The apparatus includes a phase change material storage unit for separating and arranging a plurality of phase change materials having different melting points, and arranging them in stages on a path of the waste heat so that a phase change material having a higher melting point is located closer to an inlet side of the waste heat; a use place registration unit; a temperature range storage unit; a phase change material selection unit for selecting a phase change material of a corresponding melting point; and a heat energy supply unit for supplying heat energy by the latent heat of the phase change material selected by the phase change material selection unit to a corresponding heat energy use place among a plurality of heat energy use places.

Abstract: A multi-plate scrubber is provided, and more particularly, a multi-plate scrubber including plates having different shapes to purify polluting gas is provided. According to the multi-plate scrubber, the polluting gas is effectively purified by increasing chances of contact between the polluting gas and circulating water by using various plates having different shapes.

Abstract: A regenerative thermal oxidizer purifies a polluted gas by oxidizing a volatile organic compound (VOC) contained in the polluted gas at a high temperature by using an amount of heat of the polluted gas.

Abstract: An apparatus and method for controlling access to a network in portable terminal based on a characteristic of an application may determine the characteristic of the application based on at least one of a reference security level of the application, a reference data amount of the application, and a reference speed of the application, and may select a network to be connected to from among available networks based on the characteristic of the application when executing the application.

Abstract: An augmented reality (AR) providing apparatus includes a first data acquiring unit to acquire first data of a target object, a second data acquiring unit to acquire second data, and an image processor to obtain a representative image based on the first data and to modify the representative image based on the second data. A method for providing AR includes acquiring first data for a target object, acquiring second data from a source associated with the target object or a user of an AR providing apparatus, obtaining a representative image related to the first data, and modifying the representative image based on the second data.