Patent application number | Description | Published |
20110309246 | Antenna For Use in THz Transceivers - A high frequency radiation transceiver is presented. The transceiver comprises an electrodes' arrangement, comprising two or more electrodes, where two of said electrodes are accommodated in a spaced-apart relationship defining a cavity for free space propagation of electrons between them. One of said two electrodes is configured to be responsive to an external input optical signal to emit an electron flux towards the other electrode. Said two or more electrodes are configured to define first and second electrode portions, the first portion having at least a region thereof exposed to said electron flux and operable as an antenna feeding port causing an electric current in said second portion and the second portion being configured and operable as an antenna radiating portion. | 12-22-2011 |
20120092223 | TERAHERTZ ANTENNA ARRANGEMENT - An antenna arrangement for generating and receiving terahertz radiation is described. The arrangement comprises a substrate comprising a photoconductive material and a pair of electrodes provided on the photoconductive material. Each electrode includes a plurality of elongate fingers spaced apart from each other which are arranged in a parallel relation and define finger gaps therebetween. The fingers of one electrode are located within the finger gaps formed between the spaced apart fingers of another electrode so that two neighboring fingers belong to different electrodes. The fingers of each electrode have at least one protrusion extending away from lateral sides of the fingers within the finger gap. Each protrusion is slanted with respect to the corresponding finger direction, and directed towards a neighboring slanted protrusion extending from the neighboring finger such that end edges of the neighboring protrusions extending from the neighboring fingers approximately face one another, thereby defining a protrusion gap between end edges of the facing protrusions. | 04-19-2012 |
20130075611 | ANTENNA FOR USE IN THZ TRANSCEIVERS - A high frequency radiation transceiver is presented. The transceiver includes an electrodes' arrangement, including two or more electrodes, where two of said electrodes are accommodated in a spaced-apart relationship defining a cavity for free space propagation of electrons between them. One of said two electrodes is configured to be responsive to an external input optical signal to emit an electron flux towards the other electrode. Said two or more electrodes are configured to define first and second electrode portions, the first portion having at least a region thereof exposed to said electron flux and operable as an antenna feeding port causing an electric current in said second portion and the second portion being configured and operable as an antenna radiating portion. | 03-28-2013 |
Patent application number | Description | Published |
20120272722 | IN-PIPE LEAK DETECTION BASED ON PRESSURE GRADIENT - Leak detection system. The system includes a structure sized to fit within a pipe for supporting at least one sensing element near an inside wall of the pipe, whereby a pressure gradient at a leak in the pipe will cause the sensing element to respond. Structure is provided for detecting movement or deformation of the sensing element, the movement or deformation indicating the presence of a leak. In a preferred embodiment, the structure includes two spaced-apart rings for supporting the at least one sensing element. The sensing element is a diaphragm in a preferred embodiment. In this embodiment, the sensing element is supported for movement with respect to the ring structure which includes sensing circuitry for detecting the movement to indicate a leak. Other embodiments employ different sensing elements that respond to pressure gradients near leaks. | 11-01-2012 |
20130199425 | INTEGRATED POLYMERIC-CERAMIC MEMBRANE BASED OXY-FUEL COMBUSTOR - Integrated polymeric-ceramic membrane-based oxy-fuel combustor. The combustor includes a polymer membrane structure for receiving air at an input and for delivering oxygen-enriched air at an outlet. An oxygen transport reactor including a ceramic ion transport membrane receives the oxygen-enriched air from the polymer membrane structure to generate oxygen for combustion with a fuel introduced into the oxygen transport reactor. | 08-08-2013 |
20150053385 | HEAT EXCHANGER FLOW BALANCING SYSTEM - The heat exchanger flow balancing system serves to substantially equalize fluid flow through essentially identical diameter heat exchanger tubes in a heat exchanger having a single inlet plenum, a single outlet plenum, and a series of equal diameter heat exchanger tubes extending therebetween. In one embodiment, a series of different diameter orifices are provided at the inlet end of each of the tubes, with those tubes farther from the single larger diameter inlet pipe to the plenum generally having smaller orifices. In another embodiment, each of the tubes is provided with a conical nozzle at its inlet end, with those tubes farther from the single inlet pipe to the plenum generally having smaller diameter nozzles. The effect is to substantially equalize fluid flow through all of the heat exchanger tubes, thus increasing the efficiency of the heat exchanger. | 02-26-2015 |
20150285534 | SOLAR COLLECTOR WITH OPTIMAL PROFILE FOR ENERGY DISTRIBUTION ON A TUBULAR RECEIVER - The solar collector with optimal profile for energy distribution on a tubular receiver collects and distributes solar energy. Solar energy received from the sun can be modified by either being re-directed (reflection) or being redistributed. In the present invention energy is reflected and redistributed in a manner that yields a required energy variation over a surface. The receiver is a cylinder of known length and diameter. Longitudinal distribution of energy is specified by a user defined function. Circumferential distribution is assumed to be constant. Energy distribution is required to vary along the z axis of the receiver but remain constant in the circumferential direction. An axi-symmetric approach is used in which only one plane of the receiver in r and Z plane is considered. A geometric solution determines a reflecting surface that gives a required energy distribution along the z-axis. A complete reflector is designed by expanding the axi-symmetric behavior. | 10-08-2015 |
Patent application number | Description | Published |
20110131946 | Carbon-free gas turbine - The carbon-free gas turbine is a power-producing turbine driven by the combustion of hydrocarbon fuels with oxygen. The carbon-free gas turbine includes at least one combustor for combusting gaseous fuel with oxygen. The at least one combustor includes a housing containing at least one oxygen transport reactor. The oxygen transport reactor includes an outer wall and an inner cylindrical ion transport membrane. The membrane receives pressurized air and separates gaseous oxygen therefrom, transporting the oxygen into a central region thereof for combustion with the gaseous hydrocarbon fuel, producing gaseous carbon dioxide and water vapor. A first turbine is driven by the gaseous carbon dioxide and water vapor produced by the at least one combustor and drives a first compressor. The first compressor provides the pressurized air supplied to the at least one combustor. A second turbine is driven by pressurized nitrogen gas resulting from the combustion. | 06-09-2011 |
20110132280 | Carbo-free fire tube boiler - The carbon-free fire tube boiler is a boiler for heating water by combustion of hydrocarbon fuels with oxygen. The boiler includes a housing defining first and second heat transfer stages. At least one oxygen transport reactor is received within the first heat transfer stage. The oxygen transport reactor includes an outer wall and an inner cylindrical ion transport membrane. The membrane receives pressurized air and separates gaseous oxygen therefrom, transporting the oxygen into an annular region between the membrane and the outer wall. The gaseous hydrocarbon fuel is delivered into the annular region for combustion, producing gaseous carbon dioxide and water vapor. A water reservoir is defined within the first and second stages, with the at least one oxygen transport reactor and at least one transfer tube passing therethrough. The carbon dioxide and the water vapor are delivered through the at least one transfer tube for heating water contained therein. | 06-09-2011 |
20120131898 | INTEGRATED SOLAR-GAS TURBINE COGENERATION PLANT - The integrated solar-gas turbine cogeneration plant includes a fuel reformer, a plurality of solar collectors, and a gas turbine. The fuel reformer produces syngas to be used as fuel for the gas turbine. One solar collector is operatively connected to both the fuel reformer and the turbine to provide heat for the reforming reaction and to preheat air for a combustion chamber. Exhaust gas from the turbine is directed to the fuel reformer and to a heat recovery steam generator, the former as an additional heat source and the latter to heat the generator. Another solar collector is connected to the generator and heats a portion of the water being fed into the generator in order to help produce steam. The syngas is stored in a to fuel storage unit to provide fuel to the gas turbine continuously and to a supplemental heater on the steam generator during low insolation periods. | 05-31-2012 |
20130139810 | OXYGEN TRANSPORT REACTOR-BASED OVEN - The oxygen transport reactor-based oven is an oven for heating articles, such as bread, using oxygen transport reactor-based combustion in order to recycle carbon dioxide, rather than releasing the carbon dioxide into the environment. The oven includes an upper furnace chamber having a plurality of oxygen transport reactors disposed therein. A mixture of fuel and gaseous carbon dioxide is delivered to the interior of each oxygen transport reactor. Pressurized air is then delivered to the upper furnace chamber, so that oxygen from the pressurized air is driven through an ion transport membrane of each oxygen transport reactor to combust with the fuel. This combustion produces carbon dioxide, water vapor and heat. The generated heat is used to heat the articles to be heated, which are received within a heating chamber positioned beneath the upper furnace chamber. | 06-06-2013 |
20140174329 | CONTROLLED TEMPERATURE ION TRANSPORT MEMBRANE REACTOR - The controlled temperature ion transport membrane reactor is a combustion-type ion transport membrane reactor for combusting a hydrocarbon fuel with oxygen. The reactor includes an oxygen permeable ion transport membrane for separating oxygen from air. In order to control temperature within the reactor, a thermally conductive plate is positioned between a mixing passage, where a diluent gas and the permeated oxygen are mixed, and a reaction zone. The reaction zone is in fluid communication with the mixing passage and a fuel chamber through a porous plate for combusting the hydrocarbon fuel with the oxygen. | 06-26-2014 |
20150121849 | ENGINE EMISSIONS CONTROL SYSTEM USING ION TRANSPORT MEMBRANE - The engine emissions control system using an ion transport membrane incorporates an ion transport membrane unit into a closed, recirculating intake and exhaust system in the engine. The unit has a housing defining an air intake channel separated from an exhaust gas recirculation channel by an ion transport membrane. The membrane is permeable to oxygen, but is impermeable to nitrogen, water and carbon dioxide. Oxygen drawn from ambient air in the air intake channel is transported through the membrane to enrich the flow of exhaust gases in the exhaust gas recirculation channel, which is transported through a conduit to the engine intake for combustion of hydrocarbon fuel. The oxygenated exhaust gases may include uncombusted fuel or incomplete combustion products. Exhaust and intake accumulators may smooth the gas pulses. The accumulated or excess carbon dioxide and water in the exhaust is recovered from the system into onboard storage tanks or containers. | 05-07-2015 |
20150176487 | CARBON-FREE LOW-NOX LIQUID FUEL OXYGEN TRANSPORT RECTOR FOR INDUSTRIAL WATER TUBE BOILERS - An oxygen transport reactor for boiler furnaces and gas turbine combustors that utilizes a liquid fuel that is oxidized as a gaseous fuel in a membrane reactor. A liquid fuel is introduced by vaporizing the fuel inside a porous pipe surrounded by an annulus reaction zone which is surrounded by an annulus air zone. An oxygen transport membrane separates the annulus reaction zone containing the porous vaporized fuel and sweeping CO | 06-25-2015 |
20150260105 | ZERO-EMISSION, CLOSED-LOOP HYBRID SOLAR-SYNGAS OTR POWER CYCLE - A zero-emission, closed-loop and hybrid solar-produced syngas power cycle is introduced utilizing an oxygen transport reactor (OTR). The fuel is syngas produced within the cycle. The separated oxygen inside the OTR through the ion transport membrane (ITM) is used in the syngas-oxygen combustion process in the permeate side of the OTR. The combustion products in the permeate side of the OTR are CO | 09-17-2015 |
20150267611 | APPLICATIONS OF OXY-FUEL COMBUSTION TECHNOLOGY INTO GAS TURBINE COMBUSTORS AND ION TRANSPORT MEMBRANE REACTORS - Experimental and numerical investigations on an atmospheric diffusion oxy-combustion flame in a gas turbine model combustor are conducted. The combustor is fuelled with CH | 09-24-2015 |