A GM cryocooler includes a first cold head including a first displacer that is reciprocable in an axial direction, a first drive piston that drives the first displacer in the axial direction, and a first drive chamber that houses the first drive piston; a second cold head including a second displacer that is reciprocable in the axial direction, and a second cylinder that houses the second displacer; a first intake valve that is connected to both the first drive chamber and the second cylinder so as to supply working gas in parallel to the first drive chamber and the second cylinder; and a first exhaust valve that is connected to both the first drive chamber and the second cylinder so as to collect the working gas in parallel from the first drive chamber and the second cylinder.

A gas compressor system includes a compression liquid holding tank in fluid communication with a combustion tank. A combustible fluid is directed to the combustion tank. An ignition system is provided for igniting the combustible fluid. A compression liquid flows between the liquid holding tank, the combustion tank, and a compression tank. A compressible gas is provided in the compression tank. The ignition of the combustible fluid drives the compression liquid from the combustion tank to the compression tank, compressing the compressible liquid. An HVAC&R system and a method of compressing gas are also disclosed.

An apparatus and method of compressing a gas is provided. The system includes a gas storage tank and a liquid holding tank and a hollow cylinder. A piston is disposed in the hollow cylinder dividing the hollow cylinder into a first compartment and a second compartment. A gas collector tank is in fluid connection with the first compartment by an outline line. A radiator is provided in fluid connection with the second compartment and the liquid holding tank. The system also contains a pump. The apparatus system may also be coupled to a reactor system oxidizes a hydrocarbon-containing gas.

A portable hydraulic-powered air compressor system detachably connected to a hydraulic power system of a vehicle may include a reciprocating compressor. The reciprocating compressor may include a compression cylinder, and a compressor piston assembly that may be movably disposed within the compression cylinder. Opposite sides of the compressor piston assembly may respectively define a rod chamber and a front chamber in an interior of the compression cylinder. The front chamber may include an air intake port. The compressor piston assembly may include a one-way valve that may be configured to fluidically connect the rod chamber and the front chamber in response to an air pressure in the front chamber being higher than an air pressure in the rod chamber. The hydraulic-powered air compressor system may further include a hydraulic actuating mechanism detachably connected to the hydraulic power system. The hydraulic actuating mechanism may be coupled to a piston rod of the compressor piston and may be configured to drive a reciprocating motion of the compressor piston within the compression cylinder.

Systems are provided comprising at least one driving cylinder comprising a driving chamber and a driving piston within the driving chamber. The driving piston separates the driving chamber into a driving fluid zone for receiving a driving fluid and a buffer zone for receiving a buffer fluid. The driving piston is movable in the driving chamber by the driving fluid. The systems may also comprise a driven cylinder comprising a driven chamber and a driven piston moveable in the driven chamber. The driven piston is connected to and driven by the driving piston to move within the driven chamber. The driven chamber comprises an input port configured to receive a driven fluid at a first, lower pressure into the driven chamber and an output port configured to expel the driven fluid at a second, higher pressure from the driven chamber when the driven fluid is pressurized by the driven piston. The buffer fluid is different from the driving fluid and the driven fluid, and the buffer fluid in the buffer zone separates the driving fluid from the driven fluid.

An internal return pump is disclosed for a heat engine converting energy from a vapor source to an output device. The heat engine comprises a heat engine body having a sealed first and a second heat engine body end with a heat engine piston is located in the heat engine bore. A heat engine piston rod is connected to the heat engine piston and extending from the second heat engine body end. A first valve and a second valve assembly communicating with the heat engine bore for reciprocating the heat engine piston within the heat engine bore. A condensate pump operated by the heat engine piston rod extending from the second heat engine body end for pumping low pressure vapor to the low pressure vapor return of the vapor source. An output section connecting said heat engine piston rod extending from said second heat engine body end to the output device.

A hydraulically operated compressor has a fixed piston and a fixed compression or outer cylinder. A drive or intermediate cylinder is located between the piston and outer cylinder. A compression chamber is formed between the drive cylinder and the outer cylinder. Drive fluid is pumped into and released from an interior chamber in the drive cylinder to reciprocate the drive cylinder. The drive fluid also provides cooling to the interior of the compressor.

The invention relates to the special configuration of a compression device of a refrigeration system and to its actuation method. The device consists of a pair of dual-action cylinders (8-9) connected together by means of the movable rod (11) thereof, such that the first cylinder (8) acts as an element for compressing coolant fluid, for which purpose the rod is moved through the second cylinder (9), being fed by a pressurised fluid which, by means of a series of branches and valves controlled using limit switches of the rod (11), allow the flow of coolant fluid in the first cylinder and the flow of pressurised fluid of the second cylinder at the outlet of both devices to be constant. Thus, a completely autonomous device that does not need electricity or any type of fuel is obtained.

There is provided a method of transporting fluid produced from a fluid source having a source pressure to a fluid destination having a destination pressure rating. The method has the steps of determining a compressor power requirement based on the destination pressure rating and an estimated rate of flow. A compressor having a power rating that is less than the determined compressor power requirement is provided. An input of the compressor is connected to the fluid source and connecting an output of the compressor to the fluid destination. The compressor is operated in a high volume mode for a first portion of a compression stroke path and in a low volume move for a remainder of the compression stroke path such that the compressor simulates the output from a compressor with higher power rating.

A gas transfer and depressurization system that is configured to transfer gas from a first location to a second location wherein during the transfer of gas the pressure of the first location is reduced. The gas transfer and depressurization system includes a drive chamber having an interior volume with a drive assembly movably disposed therein. A first cylinder and a second cylinder are operably coupled to the drive chamber on opposing sides thereof. The drive assembly includes a drive rod having portions extending into the first cylinder and second cylinder wherein the drive rod has pistons formed on opposing ends thereof. A controller is operably coupled to a compressed air source and is configured to provide compressed air into said drive chamber so as to reciprocally move the drive assembly. Gas blocks and coupling block are additionally present and facilitate flow of gas intermediate the first and second cylinders.