Abstract: A synthetic jet array in a computing device, such as a mobile computing device, to dissipate heat generated by a heat generating component of the mobile computer is described. In one embodiment, a microscale synthetic jet array is integrated within a heat generating component, either on the backside of the heat generating component itself or on a heat spreader coupled to the heat generating component. A method of fabricating a synthetic jet array as an integrated part of a computing device or as a heat spreader is described, as well as a method of use of the synthetic jet array, are described.

Abstract: An apparatus to use a refrigerator in a mobile computing device is described. In one embodiment, the refrigerator includes a cold reservoir to absorb heat generated by a heat generating unit of the mobile device. A heat exchanger is used to dissipate heat of a hot reservoir of the refrigerator. In an alternative embodiment, the apparatus includes a working fluid loop, with a fluid of the loop to be in thermal contact with the heat generating device, and the cold reservoir of the refrigerator to absorb heat from the fluid.

Abstract: An apparatus includes a microchannel structure that has microchannels formed therein. The microchannels are for transporting a coolant and are intended to be proximate to an integrated circuit to transfer heat from the integrated circuit to the coolant. The apparatus further includes a cover positioned on the microchannel structure. The cover has formed therein a right-angle passage to provide fluid communication between a first port on a lower horizontal surface of the cover and a second port on a vertical surface of the cover. The cover includes a plurality of tabs. Each tab extends from a respective corner of the cover. The tabs each have an aperture formed therein. The apertures are shaped and sized to receive a fastener.

Abstract: A cooling apparatus is provided with an electrostatic flow modifier to be complementarily positioned relative to a cooling fluid flow to modify at least one characteristic of the cooling fluid flow to enhance an amount of heat the cooling fluid flow removes from an electronic component.

Abstract: A microchannel structure has microchannels formed therein. The microchannels are to transport a coolant and to be proximate to an integrated circuit to transfer heat from the integrated circuit to the coolant. At least one of the microchannels has a length extent and has a first section at a first location along the length extent and a second section at a second location along the length extent. The first section of the microchannel has a first aspect ratio and the second section is divided into at least two sub-channels. Each sub-channel has a respective second aspect ratio that is greater than the first aspect ratio.

Abstract: An apparatus to use a refrigerator in a mobile computing device is described. In one embodiment, the refrigerator is a thermoacoustic based refrigerator. In one embodiment, the refrigerator is a Stirling based refrigerator.

Abstract: A device may include an integrated circuit chip and channels to carry a coolant. The channels may be proximate to an upper surface of the integrated circuit chip, and the channels may extend along a length of the integrated circuit chip. A density of the channels may change across the length of the integrated circuit chip.

Abstract: According to some embodiments, a microchannel is provided to transport a coolant. The microchannel may be proximate to an integrated circuit to transfer heat from the integrated circuit to the coolant. Moreover, a movable portion may be provided to adjust a volume of a space associated with the microchannel (e.g., when the coolant freezes).

Abstract: An apparatus for using fluid laden with nanoparticles for application in electronic cooling is described. In one embodiment, an electromagnetic pump is used to circulate the nanoparticle laden fluid.

Abstract: Various forms of energy, such as mechanical, electrical, and/or heat energy are produced by an energy conversion mechanism which includes a spool, the spool including a shaft on which a compressor and turbine are mounted. A generator is operably connected to the energy conversion mechanism for converting mechanical energy thereof into electrical energy. Fuel and air are supplied separately to the compressor. A regenerator type heat exchanger has a cold side for conducting compressed air traveling from an outlet of a compressor to an inlet of the microturbine, a hot side for conducting hot waste gas from the energy conversion mechanism, and a rotary core movable sequentially through the cold and hot sides for absorbing heat in the hot side and giving up heat in the cold side. A catalytic combustor combusts the fuel at a location upstream of the turbine. During start-up, the catalytic combustor is preheated independently of the heat exchanger by an electric heater.

Abstract: An energy producing system includes a compressor side for compressing an air/fuel mixture, and a turbine side for producing mechanical, electrical, and/or heat energy, and driving the compressor side. A catalytic combustor is disposed upstream of the turbine side for combusting a steady state air/fuel mixture during a steady state operation of the apparatus. During start-up of the system, the catalytic combustor is preheated by being supplied with a preheat air/fuel mixture capable of lighting-off therein at ambient temperature, whereby oxidization of the preheat air/fuel mixture in the catalytic combustor produces heat. The preheat air/fuel mixture is produced on-site, preferably in a reformer which burns natural gas in the presence of insufficient oxygen for complete combustion, thereby producing hydrogen and carbon monoxide.

Abstract: A gas turbine system includes a compressor side for compressing an air/fuel mixture, and a turbine side for driving the compressor side. A heat exchanger transfers heat from turbine exhaust gases to the air/fuel mixture from the compressor side. A main catalytic combustor is disposed between the heat exchanger and the turbine side for combusting the air/fuel mixture and supplying the resultant products of combustion to the turbine side. The main catalytic combustor has a volume which is sufficient for oxidizing enough fuel to achieve a predetermined turbine inlet temperature, but insufficient for oxidizing all of the fuel. A secondary catalytic combustor is disposed downstream of the turbine side for combusting at least some of the fuel that was not combusted by the main catalytic combustor. The second catalytic combustor typically operates at a lower temperature than the main catalytic combustor.

Abstract: A multi-shaft reheat turbine mechanism includes multiple turbines mounted on respective compressor shafts, and catalytic reactors feeding respective ones of the turbines. Fuel is introduced into a low pressure compressor, whereby there is no need to pressurize the fuel. The compressor side of the mechanism emits a compressed air/fuel flow, portions of which are combusted in respective ones of the catalytic reactors. The air/fuel flow traveling from the compressor side to the turbine side passes through a regenerator in heat exchanging relationship with exhaust gas from a low pressure turbine.

Abstract: Various forms of energy, such as mechanical, electrical, and/or heat energy are produced by an energy conversion mechanism which includes a spool, the spool including a shaft on which a compressor and turbine are mounted. A generator is operably connected to the energy conversion mechanism for converting mechanical energy thereof into electrical energy. Fuel and air are supplied separately to the compressor. A regenerator type heat exchanger has a cold side for conducting compressed air traveling from an outlet of a compressor to an inlet of the microturbine, a hot side for conducting hot waste gas from the energy conversion mechanism, and a rotary core movable sequentially through the cold and hot sides for absorbing heat in the hot side and giving up heat in the cold side. A catalytic combustor combusts the fuel at a location upstream of the turbine. During start-up, the catalytic combustor is preheated independently of the heat exchanger by an electric heater.

Abstract: Heat is exchanged between high and low temperature gases in a regenerator type of heat exchanger, wherein the high temperature gas is conducted through a high temperature passage formed in a housing, and the low temperature gas is conducted through a low temperature passage formed in the housing. A porous heat transfer core is rotated such that portions of the core pass sequentially through the high and low temperature passages. The high temperature gas traveling in the high temperature passage is caused to flow through, and heat, a portion of the core disposed in the high temperature passage. The low temperature gas traveling in the low temperature passage is caused to flow through, and be heated by, a heated portion of the core disposed in the low temperature passage. A low pressure zone is established in a chamber situated at each location where the core travels from one of the passages to the other.