8328results about How to "Improve thermal efficiency" patented technology

A compound cycle engine (10) comprises a compressor and a turbine section (14, 18), and at least one cycle topping device (16) providing an energy input to the turbine section (18). The compressor section (14) compresses the air according to a pressure ratio PRgt. The cycle topping device (16) further compresses the air according to a volumetric compression ratio Rvc, and wherein PRgt×Rvc are selected, according to one aspect of the invention, to provide a cycle which permit a more compact and lighter compound cycle engine to be provided.

A power cogeneration system employing a partially-open gaseous fluid cycle method and apparatus devices for oxy-fuel combustion conversion of a given hydrocarbon composition fuel's heat-value energy into mechanical or electrical power energy, and transferred useful heat energy, with accompanying large reductions of consumed fuel and undesirable exhaust emissions.

A non-volatile memory element includes a recording layer that includes a phase change material, a lower electrode provided in contact with the recording layer, an upper electrode provided in contact with a portion of the upper surface of the recording layer, a protective insulation film provided in contact with the other portion of the upper surface of the recording layer, and an interlayer insulation film provided on the protective insulation film. High thermal efficiency can thereby be obtained because the size of the area of contact between the recording layer and the upper electrode is reduced. Providing the protective insulation film between the interlayer insulation film and the upper surface of the recording layer makes it possible to reduce damage sustained by the recording layer during patterning of the recording layer or during formation of the through-hole for exposing a portion of the recording layer.

A thermal interface material (40) includes a macromolecular material (32), and a plurality of carbon nanotubes (22) embedded in the macromolecular material uniformly. The thermal interface material includes a first surface (42) and an opposite second surface (44). Each carbon nanotube is open at both ends thereof, and extends from the first surface to the second surface of the thermal interface material. A method for manufacturing the thermal interface material includes the steps of: (a) forming an array of carbon nanotubes on a substrate; (b) submerging the carbon nanotubes in a liquid macromolecular material; (c) solidifying the liquid macromolecular material; and (d) cutting the solidified liquid macromolecular material to obtain the thermal interface material with the carbon nanotubes secured therein.

A turbine engine system and a method for using the turbine engine system that includes at least one low-pressure compressor, at least one high-pressure compressor, at least one low-pressure turbine, and at least one high-pressure turbine. In addition, the turbine engine system includes an absorption refrigeration system that is used to pre-cool an air-gas mixture before it enters the high-pressure compressor. As such, the pre-cooled mixture is easier to compress, thereby increasing the thermal efficiency of the turbine engine. Additionally, the exhaust heat from the air-gas mixture that is pre-cooled may be used to drive the absorption refrigeration system. Lastly, water, may be extracted from the evaporator of the absorption refrigeration cycle.

A low-temperature catalytic process for converting biomass (preferably glycerol recovered from the fabrication of bio-diesel) to synthesis gas (i.e., H2 / CO gas mixture) in an endothermic gasification reaction is described. The synthesis gas is used in exothermic carbon-carbon bond-forming reactions, such as Fischer-Tropsch, methanol, or dimethylether syntheses. The heat from the exothermic carbon-carbon bond-forming reaction is integrated with the endothermic gasification reaction, thus providing an energy-efficient route for producing fuels and chemicals from renewable biomass resources.

This invention discloses improvements that can be achieved in thermal or mechanical performance of aerogel composites via densification. Densified aerogels and aerogel composites can display higher compressive strength, modulus, flexural strength, and maintains or insubstantially increases the thermal conductivity relative to the pre-densified form. In the special case of fiber reinforced aerogel composites densification via mechanical compression can prove highly beneficial.

An apparatus including a reciprocating internal combustion engine and a thermochemical recuperator in which a fuel is reformed. The thermochemical recuperator is heated by exhaust gases from the reciprocating internal combustion engine and steam for the reforming process is produced by passing feed water through an engine lubricating oil heat exchanger, an engine cooling system heat recovery system and an exhaust gas heat recovery system arranged in series.

The gas engine with a gas fuel reforming device thermally decomposes CH4, a major component of natural gas, into a reformed fuel of CO and H2 to increase the heat produced and thereby reduce the CO2 content in the exhaust gas and prevent the formation of NOx. The gas engine mixes CH4 with CO2 and sends the gas mixture to the catalyst reactor installed in the exhaust passage where the gas mixture is thermally decomposed into a reformed fuel by using the thermal energy of the exhaust gas. CO2 is extracted from the exhaust gas by the CO2 supply device which in turn sends the CO2 to the catalyst reactor. The CO2 supply device comprises a CO2 dissolving device that accommodates a solution to dissolve CO2 of low-temperature exhaust gas and a CO2 delivery device installed in the exhaust passage through which high-temperature exhaust gas flows and adapted to release CO2 from the solution supplied from the CO2 dissolving device. The CO2 supply device can be formed of a CO2 separation membrane that separates CO2 from the exhaust gas.

A method for storing heat from a solar collector CSTC in Concentrating Solar Power plants and delivering the heat to the power plant PP when needed. The method uses a compressed gas such as carbon dioxide or air as a heat transfer medium in the collectors CSTC and transferring the heat by depositing it on a bed of heat-resistant solids and later, recovering the heat by a second circuit of the same compressed gas. The storage system HSS is designed to allow the heat to be recovered at a high efficiency with practically no reduction in temperature. Unlike liquid heat transfer media, our storage method itself can operate at very high temperatures, up to 3000° F., a capability which can lead to greater efficiency. Due to material constraints and cost considerations in the rest of the system the maximum temperature is presently limited to between 1700° F. and 2000° F. The method can be applied to all current solar collector designs. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

A method for storing heat from a solar collector CSTC in Concentrating Solar Power plants and delivering the heat to the power plant PP when needed. The method uses a compressed gas such as carbon dioxide or air as a heat transfer medium in the collectors CSTC and transferring the heat by depositing it on a bed of heat-resistant solids and later, recovering the heat by a second circuit of the same compressed gas. The storage system HSS is designed to allow the heat to be recovered at a high efficiency with practically no reduction in temperature. Unlike liquid heat transfer media, our storage method itself can operate at very high temperatures, up to 3000° F., a capability which can lead to greater efficiency. Due to material constraints and cost considerations in the rest of the system the maximum temperature is presently limited to between 1700° F. and 2000° F. The method can be applied to all current solar collector designs. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

A semiconductor chip package mainly includes a semiconductor chip, a first dielectric layer disposed on the semiconductor chip, a plurality of conductive traces electrically connected to the semiconductor chip, a second dielectric layer disposed on the conductive traces and the first dielectric layer wherein a portion of the conductive traces are exposed from the second dielectric layer, and a plurality of contacts for external connection formed on the exposed portion of the conductive traces. The semiconductor chip has a surface including an active area, a dummy area surrounding the active area, and a plurality of bonding pads disposed on the active area. The bonding pads are electrically connected to the contacts by the conductive traces. The present invention further provides methods for manufacturing the semiconductor chip package.