Patent application number | Description | Published |
20140260340 | ADAPTIVE TRANS-CRITICAL CO2 COOLING SYSTEMS FOR AEROSPACE APPLICATIONS - A cooling system for an aircraft includes a first cooling circuit having a first evaporator and a second evaporator, and a second cooling circuit having a third evaporator and a fourth evaporator. One of the first and second cooling circuits includes a first set of valves arranged to direct refrigerant through a first cooling sub-circuit, a second cooling sub-circuit, or both the first and second cooling sub-circuits based on ambient conditions. Two of the evaporators are installed on a first side of the aircraft, and the other two of the four evaporators are installed on a second side of the aircraft opposite the first side, and the first and second cooling circuits reject heat, via a heat exchanger, from their respective cooling circuit to air passing into an engine of the aircraft. | 09-18-2014 |
20140260341 | ADAPTIVE TRANS-CRITICAL CARBON DIOXIDE COOLING SYSTEMS - A cooling system includes a first heat exchanger, an evaporator coupled to a thermal load of an aircraft. first and second cooling circuits coupled to the heat exchanger, the first and second cooling circuits selectable via a set of cooling circuit valves that are arranged to direct a refrigerant through the first circuit, the second circuit, or both the first and second circuits based on air passing through the first heat exchanger at ambient conditions of the aircraft, and a receiver configured to accumulate reserve refrigerant to provide flexibility in system operation as the cooling system operates in sub-critical, trans-critical, and super-critical modes of operation. | 09-18-2014 |
20140366563 | ADAPTIVE TRANS-CRITICAL CO2 COOLING SYSTEMS FOR AEROSPACE APPLICATIONS - A cooling system includes a heat exchanger through which a refrigerant flows, and which rejects heat to a fluid, an evaporator, a first circuit having an expansion device, a second circuit having an expansion machine coupled to a compressor, and a set of valves arranged to direct the refrigerant through the first circuit, the second circuit, or both the first and second circuits based on ambient conditions. | 12-18-2014 |
20150184898 | MULTI-EVAPORATOR TRANS-CRITICAL COOLING SYSTEMS - A multi-evaporator cooling system includes a compressor circuit that generates multiple levels of evaporating pressures, the circuit comprising at least one compressor configured to compress a refrigerant to a first pressure, a heat exchanger configured to receive the compressed refrigerant from the at least one compressor and cool the compressed refrigerant, a first evaporator circuit configured to receive the compressed refrigerant from the heat exchanger, expand the compressed refrigerant to a second pressure that is lower than the first pressure, and return the refrigerant to the compressor circuit, and a second evaporator circuit configured to receive the compressed refrigerant from the heat exchanger, expand the compressed refrigerant to a third pressure that is lower than the second pressure, and return the refrigerant to the compressor circuit. | 07-02-2015 |
20150191254 | TRANS-CRITICAL CO2 COOLING SYSTEM FOR AEROSPACE APPLICATIONS - A cooling system includes a first heat exchanger for cooling a refrigerant, an expander configured to receive the refrigerant from the first heat exchanger at least one compressor configured to compress the refrigerant, an ejector configured to receive the refrigerant from the expander as a motive stream that evacuates and compresses the refrigerant from an evaporator, and a liquid separator coupled to an output of the ejector and configured to provide liquid refrigerant to an evaporator loop and vapor refrigerant to the at least one compressor. The evaporator loop includes an expansion device positioned to expand the liquid refrigerant from the liquid separator, and the evaporator configured to receive the refrigerant from the expansion device, heat the refrigerant from a heat load, and pass the refrigerant to the ejector. | 07-09-2015 |
20150354450 | GAS TURBINE ENGINE DRIVEN BY SUPERCRITICAL POWER GENERATION SYSTEM - A gas turbine engine includes a shaft having a first air compressor coupled thereto, a combustor positioned to receive compressed air from the first compressor, and a power source coupled to the shaft, the power source powered by a working fluid other than the compressed air. | 12-10-2015 |
Patent application number | Description | Published |
20080251245 | Mini-Channel Heat Exchanger With Multi-Stage Expansion Device - A heat exchanger includes a plurality of flat, multichannel heat exchange tubes extending between spaced headers. Each heat exchange tube has an inlet end in fluid flow communication with one of the headers and an outlet opening to the other header. Each heat exchange tube has a plurality of flow channels extending longitudinally in parallel relationship from its inlet end to its outlet end. A plurality of connectors are positioned between the inlet header and the heat transfer tubes to define a flow path providing fluid flow communication between the inlet header and the inlet ends of the heat exchange tubes. Two or more flow restriction ports are arranged in the series in the flow path through each connector whereby fluid flowing from the inlet header to the flow channels of the heat exchange tube associated therewith undergoes an expansion as the fluid passes through each flow restriction port. | 10-16-2008 |
20080289806 | Heat Exchanger with Perforated Plate in Header - A heat exchanger includes an inlet header, an outlet header and a plurality of flat, multi-channel heat exchange tubes extending therebetween. A longitudinally extending member divides the interior of the header into a first chamber on one side thereof for receiving a fluid and a second chamber on the other side thereof. A plurality of multi-channel heat exchange tubes extend between the headers with the respective inlet end of each heat exchange tube passing into the second chamber of the inlet header. Fluid passes through a series of longitudinally spaced openings in the longitudinally extending member for distribution to the inlets to the channels of the multi-channel heat exchange tubes. The fluid may undergo expansion as it passes through the openings. | 11-27-2008 |
20100005831 | ENHANCED REFRIGERANT SYSTEM - A refrigerant system providing enhanced performance over a wider range of operating conditions than traditional economized refrigerant systems. The system includes an economizer branch that connects a liquid outlet from a suction accumulator to an economizer inlet port of a compressor unit. The economizer branch includes a liquid refrigerant pump that delivers a non-evaporated liquid refrigerant portion from the suction accumulator into the economizer heat exchanger, where the liquid refrigerant portion evaporates, increasing thermodynamic potential of the main circuit refrigerant also flowing in through the economizer heat exchanger, and a formed vapor stream is delivered into the economizer inlet port of the compressor unit. | 01-14-2010 |
20100154421 | RANKINE SYSTEM WITH GRAVITY-DRIVEN PUMP - A gravity-driven pumping unit has an inlet valve connected to a condenser, an outlet valve connected to a boiler, and a staging zone between the inlet and outlet valves. The inlet valve, the outlet valve, the liquid line and entire path established between the condenser and boiler are oriented, sized and shaped to allow for the vapor refrigerant to freely move upward from the boiler to the condenser and to allow for the liquid refrigerant to freely drain downwards from the condenser to the boiler by gravity. A control system opens and closes the inlet and outlet valves in a proper sequence, which enables gravity-driven movement of liquid refrigerant from the condenser to the staging zone and then from the staging zone to the boiler, against a positive pressure differential between the boiler and condenser. | 06-24-2010 |
20100170664 | PARALLEL FLOW HEAT EXCHANGER WITH CONNECTORS - A parallel flow heat exchanger includes a plurality of connector tubes which fluidly interconnect the individual flat heat exchange tubes to a refrigerant delivery member such that the refrigerant flows along the lengths of the connector tubes and then flows in a direction orthogonal thereto to enter the flat heat exchange tubes to thereby provide improved refrigerant distribution thereto. The refrigerant distribution member may be an inlet manifold or an entrance port or a refrigerant distributor. The connector tubes may be connected so as to conduct the flow in parallel or in series, and an orifice may be placed at the entrance end thereof to improve refrigerant distribution. | 07-08-2010 |
20100218513 | THERMALLY ACTIVATED HIGH EFFICIENCY HEAT PUMP - A vapor compression cycle system is combined with a Rankine cycle system, with the two systems having a common suction accumulator from which the compressor draws refrigerant vapor for the vapor compression cycle system and from which a pump draws liquid refrigerant for circulation within the Rankine cycle system. The vapor from the Rankine cycle system expander is passed to the compressor discharge to provide a mixture which is circulated within the vapor compression cycle system to obtain improved performance. The heat exchangers are sized so as to obtain a non-complete evaporation, with the resulting two-phase fluid passing to the suction accumulator to provide liquid refrigerant to the Rankine cycle system and vapor refrigerant to the vapor compression cycle system. | 09-02-2010 |
Patent application number | Description | Published |
20080247122 | CAPACITOR WITH IMPROVED VOLUMETRIC EFFICIENCY AND REDUCED COST - A surface mount capacitor is provided. The surface mount capacitor includes a capacitive element including an anode and a cathode, the anode having an exposed portion, an encapsulation material partially surrounding the capacitive element, a non-conductive substrate in contact with the encapsulation material, an anode termination connected to the non-conductive substrate, a cathode termination connected to the non-conductive substrate, and a first conductive path between the exposed portion of the anode and the anode termination comprising a first external conductive connection on a first external surface of the capacitor. The capacitor may also include a second conductive path between the cathode and the cathode termination. The second conductive path includes a second external conductive connection on a second external surface of the capacitor. The second conductive path may further include a conductive adhesive between the cathode and the second external conductive connection. | 10-09-2008 |
20100268292 | HERMETICALLY SEALED WET ELECTROLYTIC CAPACITOR - A hermetically sealed wet electrolytic capacitor includes a hermetically sealed case, a cathode, an anode, and an insulator between the anode and the cathode to provide electrical insulation between the anode and the cathode. An electrolytic solution is disposed within the case. A first terminal is electrically connected to the anode and a second terminal is electrically connected to the cathode. The cathode comprises a metal substrate having an alloy layer formed with a noble metal and a noble metal/base metal electrode element layer electrochemically deposited thereon. The electrolytic solution has a conductivity between 10 and 60 mS/cm. The capacitor may be used in an implantable device. | 10-21-2010 |
20150127060 | HERMETICALLY SEALED ELECTROLYTIC CAPACITOR - A hermetically sealed capacitor and method of manufacturing are provided. The hermatically sealed capacitor includes an anode element having an anode wire and a feed through barrell, a cathode element, a first case portion having a first opening portion and a second case portion having a second opening portion. The first and second opening portions form an opening configured to mate with the feed through barrel. The first opening portion may include a slot portion configured to receive the feed through barrel. The hermatically sealed capacitor may also include electrolytic solution disposed between the first and second case portions. | 05-07-2015 |