Patent application number | Description | Published |
20080219836 | Fan with heat dissipating outlet guide vanes - A method for designing a fan having a motor which drives an impeller comprises providing an outlet guide vane assembly which includes a hub and a plurality of guide vanes that extend radially outwardly from the hub, attaching the hub to the motor, determining an approximate amount of heat which is generated by the motor during operation of the fan, determining an approximate surface area which is required to dissipate the heat into a surrounding air stream, and configuring the guide vanes to comprise a total surface area which is approximately equal to the required surface area. In this manner, the heat generated by the motor during operation of the fan can be dissipated by the guide vanes. | 09-11-2008 |
20080219841 | Fan with strut-mounted electrical components - A cooling fan comprises a fan housing, a motor which is positioned within the fan housing, a plurality of electronics components which are associated with the motor, and at least one strut which extends radially between the motor and the fan housing, and on which the electrical components are mounted. | 09-11-2008 |
20080219844 | Reverse flow cooling for fan motor - An air mover, such as a cooling fan, comprises a motor and an impeller which is driven by the motor to generate a flow of air through a flowpath. The motor comprises at least one inlet opening and at least one outlet opening, each of which is in fluid communication with the flowpath. In operation of the air mover, a pressure difference between the inlet and outlet openings causes a portion of the flow of air to flow into the inlet opening, through the motor and out the outlet opening to thereby cool the motor. | 09-11-2008 |
20080219849 | Low camber microfan - A cooling fan comprises an impeller which includes a plurality of radially extending blades, each of which includes a blade hub, a blade tip and a blade midspan approximately midway between the hub and the tip. In addition, each blade comprises a blade suction surface, and substantially the entire blade suction surface is visible from the forward looking aft direction. | 09-11-2008 |
20080226454 | High efficiency cooling fan - A cooling fan includes an impeller which comprises a plurality of radially extending blades, each of which includes a blade hub, a blade tip and a blade midspan approximately midway between the hub and the tip. In addition, each blade includes a camber of between about 60° and 90° at the blade hub, between about 15° and 40° at the blade midspan and between about 15° and 40° at the blade tip. | 09-18-2008 |
20090071153 | METHOD AND SYSTEM FOR ENERGY STORAGE AND RECOVERY - Disclosed herein is a system for generating energy, comprising a first heat exchanger in communication with a first heat source; wherein the first heat exchanger contacts a transfer fluid that comprises a working fluid and an associating composition; and a first energy conversion device comprising a piston in reciprocatory communication with a cylinder; the cylinder comprising an inlet or an outlet valve in operative communication with a cam having multiple lobes; the cam permitting the expansion or compression of the working fluid in the cylinder two or more times in a single cycle. | 03-19-2009 |
20090071155 | METHOD AND SYSTEM FOR THERMOCHEMICAL HEAT ENERGY STORAGE AND RECOVERY - Disclosed herein is a system for generating energy, comprising a first heat exchanger in thermal communication, fluid communication, or a combination of thermal and fluid communication with a first heat source; wherein the first heat exchanger contacts a transfer fluid that comprises a working fluid and an associating composition; and a first energy conversion device comprising a piston in reciprocatory communication with a cylinder; the cylinder comprising an inlet or an outlet valve in operative communication with a cam having multiple lobes; the cam permitting the expansion or compression of the working fluid in the cylinder two or more times in a single cycle. | 03-19-2009 |
20090139874 | SYSTEM AND METHOD FOR THE PRODUCTION OF HYDROGEN - Disclosed herein are a system and a method for the production of hydrogen. The system advantageously combines an independent high temperature heat source with a solid oxide electrolyzer cell and a heat exchanger located between the cathode inlet and the cathode outlet. The heat exchanger is used to extract heat from the molecular components such as hydrogen derived from the electrolysis. A portion of the hydrogen generated in the solid oxide electrolyzer cell is recombined with steam and recycled to the solid oxide electrolyzer cell. The oxygen generated on the anode side is swept with compressed air and used to drive a gas turbine that is in operative communication with a generator. Electricity generated by the generator is used to drive the electrolysis in the solid oxide electrolyzer cell. | 06-04-2009 |
20090263680 | Alternative Path Cooling of a High Temperature Fuel Cell - Systems and methods provide for the thermal management of a high temperature fuel cell. According to embodiments described herein, a non-reactant coolant is routed into a fuel cell from a compressor or a ram air source. The non-reactant coolant absorbs waste heat from the electrochemical reaction within the fuel cell. The heated coolant is discharged from the fuel cell and is vented to the surrounding environment or directed through a turbine. The energy recouped from the heated coolant by the turbine may be used to drive the compressor or a generator to create additional electricity and increase the efficiency of the fuel cell system. A portion of the heated coolant may be recycled into the non-reactant coolant entering the fuel cell to prevent thermal shock of the fuel cell. | 10-22-2009 |
20090263681 | THERMAL MANAGEMENT OF A HIGH TEMPERATURE FUEL CELL ELECTROLYZER - Apparatus, systems, and methods provide for the management of a high temperature electrolysis process. According to embodiments described herein, a fuel cell electrolyzer stack is utilized in an electrolysis process. One implementation includes the use of a solid oxide electrolyzer. Input voltage is cycled around a thermal neutral voltage such that the fuel cell electrolyzer stack cycles between operation in an exothermic mode and an endothermic mode. The waste heat generated by operation in the exothermic mode is used to support the endothermic operation. By cycling between operation modes, the temperature of the fuel cell electrolyzer stack may be controlled without the use of a cooling loop or recirculated reactant flow, and the efficiency of the electrolysis process is maximized. | 10-22-2009 |
20110038724 | Flow trim for vane-axial fans - A fan comprises a fan housing which includes a fan inlet, a motor which is connected to the fan housing, and an impeller which is removably connected to the motor. The impeller includes an impeller hub, a number of impeller blades which extend radially outwardly from the impeller hub, an impeller leading edge, an impeller trailing edge and an impeller tip. The fan housing includes an inlet shroud which is positioned over the impeller. The inlet shroud comprises an upstream end portion within which the fan inlet is formed and a downstream end portion which is removably connected to a separate portion of the fan housing. The inlet shroud further includes a first section which extends axially from the upstream end portion to approximately the impeller leading edge, a second section which extends axially from the first section to approximately the impeller trailing edge, and a third section which extends axially from the second section to approximately the downstream end portion. The second section comprises a configuration which conforms to the configuration of the impeller tip, and the third section comprises a radius which increases from approximately the upstream end of the third section to approximately the downstream end of the third section. | 02-17-2011 |
20130044430 | FAN ASSEMBLY FOR RACK OPTIMIZED SERVER COMPUTERS - A fan assembly for an electrical device which comprises a number of heat generating electrical components mounted in an enclosure that includes a front wall, a rear wall and two generally parallel sidewalls. The fan assembly comprises a plurality of fans which are arranged in a row that extends generally perpendicularly between the sidewalls. Each fan comprises an axis of rotation which is oriented at an angle relative to the sidewalls, and the fan assembly further includes a plurality of inlet plenums which each communicate with an inlet end of a corresponding fan and a plurality of exhaust plenums which each communicate with an outlet end of a corresponding fan. In operation, the fans generate an airflow which is distributed through the enclosure by the inlet and exhaust plenums to thereby cool the electrical components. | 02-21-2013 |