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9038390 Apparatuses and methods for thermodynamic energy transfer, storage and retrieval  
Systems and methods for transferring and optionally storing and/or retrieving thermal energy are disclosed. The systems and methods generally include a heat engine and a heat pump, the heat engine...
9019700 Method of operating an energy center  
Methods are provided for creating and operating data centers. A data center may include an information technology (IT) load and a fuel cell generator configured to provide power to the IT load.
8991196 Regenerator, GM refrigerator, and pulse tube refrigerator  
A helium-cooling type regenerator configured to retain cold temperatures of working gas includes a first section through which the working gas flows, a second section configured to accommodate...
8984898 Cryogenic refrigerator system with pressure wave generator  
A pressure wave generator (40) for driving one or more cryogenic refrigerator systems. The pressure wave generator (40) comprises a housing with one or more inlet/outlet ports (57,58) through...
8978400 Air cooled helium compressor  
This invention relates generally to oil lubricated helium compressor units for use in cryogenic refrigeration systems, operating on the Gifford McMahon (GM) cycle. The objective of this invention...
8973378 System and method for removing heat generated by a heat sink of magnetic resonance imaging system  
Systems and methods from removing heat generated by a heat sink of a magnetic resonance imaging (MRI) system are provided. One system includes a coldhead sleeve cooling arrangement for a coldhead...
8970158 High-efficiency-direct-drive cryocooler driver  
In one embodiment, a cryocooler drive circuit for a cryocooler motor is provided that includes: a first switching power converter configured to track a first sinusoidal input voltage signal to...
8959929 Miniaturized gas refrigeration device with two or more thermal regenerator sections  
The size of a miniature cryocooler (100) operating on the Stirling refrigeration cycle is further reduced by shortening a first thermal regenerator module (R) disposed on a cold side of a thermal...
8952635 Method for use in controlling free piston stirling coolers and heat pumps driven by a linear alternator  
A method for use in controlling a free piston Stirling machine having a cold end and a warm end and driven by a linear motor having an armature winding to which a drive voltage is applied. The...
8950193 Secondary pulse tubes and regenerators for coupling to room temperature phase shifters in multistage pulse tube cryocoolers  
Pulse tube refrigeration or cooling systems are described which utilize a secondary regenerator or a secondary pulse tube. Use of such a secondary regenerator or pulse tube enables a commercially...
8950489 Annular disposed stirling heat exchanger  
Apparatus and method for cooling internal components of a down-hole well drilling apparatus. Components of the well drilling apparatus are encased in an inner canister that is further encased in...
8938963 Thermoacoustic engine  
A thermoacoustic engine includes a first stack and a second stack disposed in a gas-filled looped tube. The first stack has a first end to which heat is inputted and a second end to which cooling...
8931286 Heat exchanger and thermoacoustic device using the same  
A thermoacoustic device 1 for improving heat exchange efficiency is provided which has a first stack 3a including stack constituent elements 3eL and 3eH laminated together, and a first...
8915719 Cryogenic reciprocating pump intermediate distance piece  
The present invention teaches providing heating elements into the nose of an intermediate distance piece of a cryogenic reciprocating pump in order to warm the piston packing seals of the pump....
8910486 Expander for stirling engines and cryogenic coolers  
The invention is directed to an improved cryogenic cooler with an expander where the regenerator matrix is decoupled from the displacer or piston, thereby allowing the design of each to be...
8908820 Stirling radioisotope generator and thermal management system  
A Stirling radioisotope generator is provided. The generator includes a first and second heat source assembly, each heat source assembly comprising two General Purpose Heat Source modules, each...
8899053 Cryogenic refrigerator  
A cryogenic refrigerator includes a cylinder configured to be fed with a refrigerant gas, a displacer configured to reciprocate in the cylinder, a drive unit configured to cause the displacer to...
8899037 Stirling engine  
The present invention provides a Stirling engine capable of effectively recovering heat from exhaust gas flowing through a flue, and connecting a heating portion 10 and a regeneration portion 5...
8850845 Portable cooling unit  
A portable cooling unit comprising a magnetic spiral vapor pump that utilizes a magnetic pulse between two electromagnets and spiral drive slots to pull a piston back-and-forth 180-degrees and...
8839634 Arrangement adapted for energy transformation  
An arrangement is disclosed for energy transformation under the utilization of an oscillating gas volume sustained by an energy supplying device. A gas compression creates an elevated temperature...
8833089 Plasma processing apparatus and maintenance method therefor  
In a plasma processing apparatus, a check valve is installed close to a refrigerant inlet of a compressor. When performing maintenance of a sample stage, refrigerant collected from a refrigerant...
8806875 Thermoacoustic device with suppressor  
There is provided a thermoacoustic device 1 which has in a loop tube 2, a first stack 3a between a first high-temperature side heat exchanger 4 and a first low-temperature side heat exchanger 5,...
8800302 Driving an active vibration balancer to minimize vibrations at the fundamental and harmonic frequencies  
Vibrations of a principal machine are reduced at the fundamental and harmonic frequencies by driving the drive motor of an active balancer with balancing signals at the fundamental and selected...
8783045 Reduced input power cryogenic refrigerator  
The present invention relates to valved cryogenic refrigerators, in particular, Gifford McMahon (GM) refrigerators, and GM type pulse tube refrigerators where gas is cycled between high and low...
8776534 Gas balanced cryogenic expansion engine  
An expansion engine operating on a Brayton cycle which is part of a system for producing refrigeration at cryogenic temperatures that includes a compressor, a counter-flow heat exchanger, and a...
8778859 Lubricant useful for improving the oil separation performance of a vapor compression system  
Polymeric additives are disclosed for compressor lubricants which can reduce the tendency of the lubricant to become entrained in compressed gases and be carried forward as fine dispersed droplets...
8752375 Free-piston stirling machine in an opposed piston gamma configuration having improved stability, efficiency and control  
An opposed piston gamma type Stirling machine has its displacer driven by a linear electromagnetic transducer that is drivingly linked to the displacer and is located on the opposite side of the...
8746008 Low vibration cryocooled system for low temperature microscopy and spectroscopy applications  
A vertical support rigidly mounted to a planar base positions and supports a cryocooler expander unit off axis and away from a sample to be examined. The sample support is likewise rigidly mounted...
8739555 Rotary type ultralow temperature refrigerant supply apparatus  
The rotary type ultralow temperature refrigerant supply apparatus includes a refrigerant introduction pipe coupled to the super conductive rotor for supplying a liquid-phase ultralow temperature...
8733112 Stirling cycle cryogenic cooler with dual coil single magnetic circuit motor  
Described herein is a Stirling cycle cryogenic cooler comprising: a first magnetic circuit and a second magnetic circuit for generating a field of magnetic flux; the first magnetic circuit and the...
8720198 System and method for electrically-coupled thermal cycle  
In one embodiment according to the invention, there is provided a method for generating electrical energy using a thermal cycle of a working gas. The method comprises using the motion of a piston...
8720210 Vibration-inhibiting reinforcement member for a cryocooler  
A regenerative cryocooler, the regenerative cryocooler being connected to a compressor configured to make coolant gas have a high pressure, send the high pressure coolant gas, and absorb coolant...
8701404 System and method for electrically-coupled thermal cycle  
In one embodiment according to the invention, there is provided a method for generating electrical energy using a thermal cycle of a working gas. The method comprises using the motion of a piston...
8695356 Pulse tube cryocooler modulating phase via inertance tube and acoustic power amplifier thereof  
A pulse tube cryocooler modulating phase via an inertance tube and an acoustic amplifier (A1, A2) provided in the pulse tube cryocooler are disclosed. The acoustic power amplifier (A1, A2) is made...
8690548 Mobile heat pump  
A heat pump system including a heat engine having a valve assembly positioned to divide the heat engine chamber into a first chamber and a second chamber. A piston is positioned within the heat...
8671698 Gas liquifier  
A cryocooler for liquefying gas in which the neck of the dewar or cryostat includes a cold end of a cryocooler with the first stage cooling station, the first stage regenerator, the second stage...
8671677 Gamma type free-piston stirling machine configuration  
An improved free piston Stirling machine having a gamma configuration. The displacer and each piston is reciprocatable within a cylinder having an unobstructed opening at its inner end into a...
8640467 Acoustic power transmitting unit for thermoacoustic systems  
An acoustic power transmitting unit for thermoacoustic systems includes at least one stage provided with at least two thermoacoustic units each of which includes a regenerator or a stack and two...
8640468 Isothermal gas supply and method for minimizing the temperature excursion of a gas mixture released therefrom  
Embodiments of a pressurized gas supply are provided. In one embodiment, the pressurized gas supply includes a pressurized gas reservoir and a pressure reducer fluidly coupled to the pressurized...
8639388 Time domain vibration reduction and control  
A vibration control system includes a mechanical system which generates vibration; a sensor configured to measure the vibration and generate a vibration signal thereof, and a processor configured:...
8621876 Ruggedized integrated detector cooler assembly  
Provided for an embodiment is a support member for a cryogenic cooler's expander. The support member provides stiffness to the expander to reduce movements at the expander's distal end and may...
8590302 Thermodynamic cycle and heat engine  
A method and arrangement are for heat exchanging in and work exchanging with a working fluid in a heat engine, or a heat pump if the method and its sub-processes are substantially reversed. A...
8590318 Pulse-tube refrigerating machine  
A pulse-tube refrigerating machine includes: a compressor that pressurizes a refrigerant gas; a regenerator tube accommodating a regenerator material therein; a pulse-tube having of a hollow...
8590319 Pulse tube refrigerator  
A multi-stage pulse tube refrigerator includes a first stage regenerator tube including a heat exchanger; a second stage regenerator tube; a first stage pulse tube; a second stage pulse tube; a...
8584472 Water vapor distillation apparatus, method and system  
A fluid vapor distillation apparatus. The apparatus includes a source fluid input, and an evaporator condenser apparatus. The evaporator condenser apparatus includes a substantially cylindrical...
8584471 Thermoacoustic apparatus with series-connected stages  
A thermoacoustic apparatus includes multiple thermoacoustic device stages, such as individual thermoacoustic refrigerators, connected in a looped series such that excess acoustic energy from a...
8544281 Cooling system and method for superconducting magnets  
A method for cooling a superconducting magnet enclosed in a cryostat includes introducing a gas into a cooling path in the cryostat from an input portion into a cooling path cooled by a...
8516833 4-valve pulse tube cryocooler  
A 4-valve pulse tube cryocooler has, on a high-pressure end of a compressor, first and second coolant supply channels respectively connected to high-temperature ends of a regenerator and a pulse...
8511100 Cooling of superconducting devices by liquid storage and refrigeration unit  
A system is disclosed for cooling superconducting devices. The system includes a cryogen cooling system configured to be coupled to the superconducting device and to supply cryogen to the device....
8508057 Power generator  
The present invention provides a power generator for generating electricity comprising a high pressure core having an interior chamber. The interior chamber is filled with a volume of one or more...