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7530235 |
Heat pump, heat pump system, method of pumping refrigerant, and rankine cycle system
A Rankine cycle system has a condenser, a heat pump connected to the condenser, a heat collecting device connected to the heat pump, and an expansion turbine connected to the heat collecting device...
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7401475 |
Thermodynamic systems operating with near-isothermal compression and expansion cycles
A thermodynamic system that can approximate the Ericsson or Brayton cycles and operated in reverse or forward modes to implement a cooler or engine, respectively. The thermodynamic system includes...
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7343965 |
Brazed plate high pressure heat exchanger
A brazed plate heat exchanger ( 30 ) is provided for transferring heat between a first fluid ( 32 ) and a second fluid ( 34 ), with the first fluid ( 32 ) being pressurized to a relatively high...
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7340918 |
Magnetostrictive drive of refrigeration systems
A liquid-phase cooling device of a refrigeration system has an outer tubular housing enclosing a heat exchanger through which a mixture gases and liquid constituting a working fluid media is heated...
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7308797 |
Cryogenic refrigerator
A cryogenic refrigerator includes a first refrigerant tube and a second refrigerant tube each comprising two tubes that are arranged on a cooling stage substantially parallel to each other and...
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7281383 |
Reciprocating four-stroke Brayton refrigerator or heat engine
A thermal machine that can function as either a refrigerator or an external combustion heat engine is disclosed. A working gas undergoes four thermodynamic processes that comprise a Brayton cycle....
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7260940 |
Heat pump using gas hydrate, and heat utilizing apparatus
The object of the present invention is to provide a heat pump having a high coefficient of performance (COP), and a heat utilizing apparatus that allows the obtaining of high energy efficiency by...
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6945066 |
Refrigeration cycle apparatus
A refrigeration cycle apparatus using carbon dioxide as a refrigerant has a compressor, an outdoor heat exchanger, an expander, an indoor heat exchanger and an auxiliary compressor. The auxiliary...
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6928389 |
Compressor performance calculator
A system and method for calculating the performance of a compressor wherein the user can select a compressor from a database or retrieve a list of compressors to select from based on application...
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6786059 |
Refrigeration system
Water is used as a refrigerant, and a humidification cooler ( 41 ) which evaporates the water to generate cold heat and a dehumidifier ( 42 ) are provided. A compressor ( 50 ) which compresses...
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6739137 |
Magnetic condensing system for cryogenic engines
A method and apparatus is provided for generating an artificial heat sink below ambient temperature for a cryogenic condenser by isothermally magnetizing a paramagnetic fluid and removing the...
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6734632 |
Electric discharge lamp device
An electric discharge lamp device prevents a temperature rise in the circuit device when an electric discharge lamp ( 30 ) is operated without the use of a high voltage wire and a high voltage...
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6684645 |
Cooling by resonator-induced coherent scattering of radiation
The invention relates to a method and apparatus for cooling multilevel entities such as atoms, ions or molecules as well as entities with no apparent internal structure. Cooling is achieved by...
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6672099 |
Refrigeration system
In a refrigeration system ( 10 ), an evaporator ( 11 ) and a condenser ( 15 ) are each formed of a container-like member ( 55 ). The inside of the container-like member ( 55 ) is divided into a...
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6668560 |
Rotating magnet magnetic refrigerator
A magnetic refrigeration apparatus has an annular container including a plurality of magnetic regenerator compartments containing magnetocaloric material, and a magnet mounted for rotation around...
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6644062 |
Transcritical turbine and method of operation
A process employing a rotary axial turbine, and a nozzle, that includes providing a working fluid expansible from a characteristic supercritical region into the wet region, expanding the fluid from...
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6604364 |
Thermoacoustic cogeneration system
A method for operating a thermoacoustic engine which produces acoustic energy which may be used to generate refrigeration wherein energy delivery fluid from a hot energy source, which provides heat...
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6591614 |
Kinetic cooling and heating
In heating and cooling apparatus, molecules of working gas are excited by light irradiation and thereby cooled as the gas flows through a mirrored cooling cell. In a closed loop embodiment, the gas...
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6588224 |
Integrated absorption heat pump thermoacoustic engine refrigeration system
A system for generating refrigeration wherein a hot process fluid is used to drive a thermoacoustic engine and residual heat from the process fluid is used to desorb refrigerant from a high...
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6568196 |
Air conditioner
An air conditioning/cooling system employs an elastic medium such as, for example, a rubber band, instead of the working fluid gases typically used in conventional air conditioners. The system is...
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6553771 |
Electrochemical heat pump system
An electrochemical heat pump system comprising an electrochemical pump, refrigerant-based cooling system, and gas-driven compressor. The electrochemical pump is capable of reversibly producing and...
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6508866 |
Passive purification in metal hydride storage apparatus
Heat exchangers, hydrogen gas compressors, hydrogen gas storage devices, hydrogen gas purifiers and metal hydride air conditioners utilizing a flow of a hydrogen gas stream which is absorbed and...
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6490882 |
Method and apparatus for maintaining compressor discharge vapor volume for starting with condensing unit ambient temperatures less than evaporator unit ambient temperatures
A method of preventing refrigerant condensation in a discharge volume or discharge line of a compressor is disclosed. The method involves the application of one or more heaters to a cooling circuit...
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6490881 |
Generating displacement and theroacoustic refrigerator
A displacement generator ( 10 ) has a housing ( 12 ) defining a chamber ( 14 ) containing an incompressible liquid ( 15 ). A port ( 22 ) of the housing ( 12 ) is closed by a movable member ( 24 )....
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6408644 |
Microwave home energy heating and cooling system
A heating system for applying heat to a heat input air conditioning system generator. The system teaches a wave converting system for transforming radio waves into heat. The wave converting system...
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6367281 |
Solid phase change refrigeration
A refrigeration cycle is disclosed whereby: straining a material results in a solid phase change of the material. This phase change is accompanied by an adiabatic and nearly reversible temperature...
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6349551 |
Thermodynamic power and cryogenic refrigeration system using low temperature heat source
A thermodynamic power and cryogenic refrigeration system using a first and second (binary) working fluid has a low-temperature closed bottoming cycle and an open or closed topping cycle. In the...
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6332323 |
Heat transfer apparatus and method employing active regenerative cycle
This application relates to a heat transfer apparatus and method employing an active regenerative cycle. The invention employs a working or "active" fluid and a heat transfer fluid which are...
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6314740 |
Thermo-acoustic system
A regenerative thermo-acoustic energy converter includes a regenerator assembly located within an acoustic resonator room filled with gas, the regenerator assembly includes a regenerator located...
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6307287 |
High-efficiency moving-magnet loudspeaker
A thermoacoustic driver incorporates a linear electrodynamic motor having electrical terminals and a moving part, a driver suspension housing, a piston, and a stiffness-enhancing device for raising...
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6282908 |
High efficiency Malone compressor
A high efficiency compressor and heat exchange assembly adapted for utilization in air-conditioning/refrigeration systems. The assembly includes an electromechanical compressor instead of a...
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6079214 |
Standing wave pump
A standing wave pump in which a standing compression wave is produced by a pair of diametrically opposing transducers. The vibrating surfaces of the transducers are oscillated at a frequency...
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6041610 |
Optical refrigerator using reflectivity tuned dielectric mirrors
Optical refrigerator using reflectivity-tuned dielectric mirrors. Selected working materials can be optically pumped using monochromatic radiation such that the resulting fluorescence has an...
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6041608 |
Low temperature refrigerating device having small refrigerating capacity change
There is provided a cryogenic refrigerating apparatus capable of reducing a fluctuation range of refrigerating capacity as far as possible with respect to a wide range of change in outdoor...
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5996345 |
Heat driven acoustic power source coupled to an electric generator
The electricity generating engine has modest efficiency, but may be attrave in remote applications where high-reliability or low cost or low environmental noise or solar powering is important. The...
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5987902 |
Additive for improving performance and cooling capacity of vapor compression systems
A performance enhancing additive is introduced into a vapor compression system used in cooling and the like. The additive is selected from a class of compounds, e.g. tetraglyme, and added in a...
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5953921 |
Torsionally resonant toroidal thermoacoustic refrigerator
This invention for the production of high amplitude acoustic standing wav which can be used for thermoacoustic heat transport purposes, describes the use of a rigid barrier in place of a piston,...
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5941079 |
Microminiature stirling cycle cryocoolers and engines
A microminiature Stirling cycle engine or cooler is formed utilizing semiconductor, planar processing techniques. Such a Stirling cycle thermomechanical transducer has silicon end plates and an...
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5934078 |
Reciprocating active magnetic regenerator refrigeration apparatus
An active magnetic regenerator refrigeration apparatus includes one or more reciprocating regenerator beds and a heat transfer fluid distribution valve that is activated as the bed is moved between...
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5924305 |
Thermodynamic system and process for producing heat, refrigeration, or work
An external combustion thermodynamic system includes a compression stage for substantially adiabatically compressing a working medium to raise the temperature of the medium and an expansion stage...
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5901556 |
High-efficiency heat-driven acoustic cooling engine with no moving parts
This invention describes a new geometry for a heat driven thermoacoustic me mover (i.e. acoustic motor) and its application to a thermoacoustic refrigerator and to an electricity generator. The...
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5878580 |
Method of operating a cryogenic cooling device, and a cryogenic cooling device suitable for operation by this method
This invention concerns a method of operating a cryogenic cooling device (1) with a cylinder (4, 5) in which a piston (6, 7) reciprocates and with a gas drive (8, 9) which produces the motion of...
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5867991 |
Ferroelectric Stirling-cycle refrigerator
A Stirling-cycle refrigerator has a three-pump configuration and pumping sequence, in which one pump serves as a compressor, one pump serves as an expander, and one pump serves as a displacer. The...
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5857340 |
Passive frequency stabilization in an acoustic resonator
The resonance frequency of a gas-filled acoustic resonator (12) is stabilized against changes in frequency due to changes in the temperature of the gas and resonator (12) by placing a gas mixture...
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5813234 |
Double acting pulse tube electroacoustic system
A electroacoustic cooling engine comprising a resonator pressure vessel for containing a compressible fluid, a double acting flexural disk centrally located in the resonant pressure vessel, an...
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5794450 |
Remotely located pulse tube for cooling electronics
An electrical component cooling system is described which achieves low cooling temperatures for densely packaged electrical components using environmentally friendly working fluids. The cooling...
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5711157 |
Cooling system having a plurality of cooling stages in which refrigerant-filled chamber type refrigerators are used
A superconducting magnet apparatus comprises a superconducting coil unit, and a refrigerant-filled chamber type refrigerator having a plurality of cooling stages. At least a final cooling stage of...
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5711156 |
Multistage type pulse tube refrigerator
A multistage type tube refrigerator comprising a regenerator-side pressure oscillation generator, first regenerator connected to the regenerator-side pressure oscillation generator, first cold head...
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5673561 |
Thermoacoustic refrigerator
A thermoacoustic device having a thermal stack made from a piece of porous material which provides a desirable ratio of thermoacoustic area to viscous area, which has a low resistance to flow,...
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5647216 |
High-power thermoacoustic refrigerator
A high-power thermoacoustic refrigerator including a half-wave length resonator, first and second drivers located in housings at first and second ends of said resonator, two pusher cones, a...
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