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72results about How to "Size reduction requirements" patented technology

Reversible solid adsorption method and system utilizing waste heat for on-board recovery and storage of co2 from motor vehicle internal combustion engine exhaust gases

A method and system are described for on-board treatment of an exhaust stream containing CO2 emitted by a hydrocarbon-fueled internal combustion engine (ICE) used to power a vehicle in order to reduce the amount of CO2 discharged into the atmosphere which include:
    • a. a treatment zone on board the vehicle containing a capture agent having a predetermined capacity for extracting CO2 from the exhaust stream,
      • the treatment zone preferably operating in swing mode with at least two subsystems, each having an inlet for admitting the exhaust gas stream and an outlet for passage of a treated exhaust stream having a reduced CO2 content,
      • the treatment zone preferably operating in swing mode with at least two subsystems, each including a heat exchanger with an inlet for receiving the hot exhaust gas stream from the ICE for passage in heat exchange relation with the capture agent to release CO2 and regenerate the capture agent, and an outlet for the cooled exhaust gas stream,
      • the treatment zone having a CO2 discharge outlet for CO2 released from the regenerated capture agent;
    • b. a compression zone in fluid communication with the CO2 discharge outlet from the treatment zone, the compression zone including one or more compressors for reducing the volume of the CO2;
    • c. a storage zone for receiving the compressed CO2 for temporary storage on board the vehicle; and
    • d. an exhaust gas conduit in fluid communication with the treated exhaust gas stream outlet from the treatment zone.
Owner:SAUDI ARABIAN OIL CO

Pressure exchanger

A pressure vessel provided with a first port acting as a high pressure inlet of a first stream and a second port acting as a high pressure outlet. A rotatable valve element is located in the centre of the machine and includes a centre plate, which is utilized to separate high pressure streams. At each end of the valve element are valves. The valves ensure that as the valve element rotates the exchange ducts are either both isolated or that one is exposed to high pressure while the other is exposed to low pressure. In operation, a fluid stream is introduced to the machine at high pressure through port and flows around the outside of the exchange duct towards the centre of the machine. The stream then flows downwardly to the valve element, where it then passes through the open ports of the valve element and into flow distributor. The stream then passes into and upwardly in the exchange duct, causing upward displacement of the duct piston, resulting in the pressurization and flow of the second fluid above the duct piston. The second fluid then flows into the upper flow distributor, into the valve element, and then downwardly and finally between the exchange duct and out through the high pressure port. At the same time a fluid stream is introduced to the machine at low pressure through port. This flows into the valve element and then into the flow distributor. From the flow distributor it flows and downwardly into the pressure exchange duct, causing downward displacement of duct piston and resulting in flow of the first fluid below the duct piston, which then flows into the lower flow distributor, into the valve element, and then out of the lower sealing plate at port. A planar radial sealing surface promotes sealing connection between the rotatable valve element and various pressure exchange ducts within the pressure vessel.
Owner:FLOWSERVE HLDG

Meander line antenna coupler and shielded meander line

InactiveUS20050225496A1Less ohmic lossEliminates down firingResonant long antennasRadiating elements structural formsResonanceEngineering
A switched meander line structure is substituted for a lumped element coupler (10) for an order of magnitude increase in gain due to the use of the switched meander line architecture. The use of the meander line (20) with relatively wide and thick folded legs markedly decreases I2R losses over wire inductors whose wire diameters at one-tenth of an inch contribute significantly to I2R losses. Additionally, placing solid state switches to short out various sections of a multi-leg meander line at high impedance nodes reduces I2R losses across the switching elements in the coupler. It has been found that, regardless of the impedance of the antenna, this impedance may be matched by switching in and out various sections of a folded multileg meander line due to the fact that the square of the sum of the capacitive reactances of the meander line decreases with frequency in synchronism with the unloaded Q of the meander line, thus to provide the ability to maintain a good match over frequency as the meander line is tuned to achieve resonance by shorting out combinations of sections of the meander line. The result of the substitution of the meander line architecture for the lumped element coupler is the reduction of losses associated with the use of wire inductors and losses due to the interposition of solid state switches at high-current nodes.
Owner:BAE SYST INFORMATION & ELECTRONICS SYST INTERGRATION INC

Method of super super decoupled loadflow computation for electrical power system

A method of performing loadflow calculations for controlling voltages and power flow in a power network by reading on-line data of given / specified / scheduled / set network variables / parameters and using control means, so that no component of the power network is overloaded as well as there is no over / under voltage at any nodes in the network following a small or large disturbances. The invented generalized Super Super Decoupled Loadflow (SSDL) calculation method is characterized in that 1) modified real power mismatch at any PQ-node-p is calculated as RPp=[ΔPp′+(Gpp′ / Bpp′)ΔQp′] / Vp2, which takes different form for different manifestation of the generalized version SSDL-X′X′ method, 2) transformed values of known / given / specified / scheduled / set quantities in the diagonal elements of the gain matrix [YV] of the Q-V sub-problem are present, and 3) transformation angles are restricted to maximum of −48° particularly for the most successful version SSDL-YY method, and these inventive loadflow calculation steps together yield some processing acceleration and consequent efficiency gains, and are each individually inventive. The other two Super Super Decoupled Loadflow methods: BGX′ version (SSDL-BGX′) and X′GpvX′ version (SSDL-X′GpvX′) are characterized in the use of simultaneous (1V, 1θ) iteration scheme thereby calculating mismatches only once in each iteration and consequent efficiency gain.
Owner:PATEL SURESHCHANDRA B

Semi-open type full circumferential coronagraph apparatus with large field of view

The invention relates to a semi-open type full circumferential coronagraph apparatus with a large field of view. The coronagraph apparatus comprises in sequence from left to right: an outer shielding body, an outer window, a heat collecting lens, an inner shielding body, an inner shielding body light-absorbing groove, an imaging system and a CCD camera. The outer shielding body and the inner shielding body are disposed on the optical axis of an optical path. The inner shielding body is positioned in an imaging position where the outer shielding body passes through an object lens unit. The coronagraph apparatus, as a whole, is of a semi-open square structure, and is reduced in size and weight. The heat collecting lens is a reflector with a square centrally-recessed structure, and the recessed surface of the centrally-recessed structure faces one side of the outer window. The heat collecting lens is arranged in an inclined manner. The lower end of the heat collecting lens goes toward one side of the outer window relative to the upper end of the heat collecting lens. Incident sun direct light is focused by the heat collecting lens outside the semi-open square structure, so the influence of scattered stray light on the surface of the heat collecting lens is reduced.
Owner:SHANDONG UNIV +1
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