Abstract: A system for compressing hydrogen gas may include a compression stage with a water lubricated and sealed compressor, a gas-liquid separation stage, and a drying stage with an adsorption-type gas dryer. The system receives hydrogen gas via an inlet and discharges dry compressed hydrogen gas via an outlet. The system has an encapsulating vessel defining a cavity within which the separation stage and drying stage are located.

Abstract: A method of operating a solar energy plant and a solar plant are disclosed. Thermal energy produced in the plant is used to heat a first volume of water and charge a hot store in the plant. Electricity produced in the plant operates a heat engine or other device, such as a refrigeration unit, to extract heat and consequently cool a second volume of water and charge a cold store. As desired, energy is transferred from the hot store to a heat engine and energy is transferred from the heat engine to the cold store to operate the heat engine to produce power in the plant.

Abstract: An apparatus and a method for compressing and drying a gas and for delivering dried gas at a high pressure greater than 10 bar and a flow rate greater than 1 m3/min and up to 100 m3/min.

Abstract: An apparatus and a method for compressing and drying a gas and for delivering dried gas at a high pressure greater than 10 bar and a flow rate greater than 1 m3/min and up to 100 m3/min.

Abstract: A rotary adsorbent dryer is provided which includes a stationary outer housing having spaced stationary end walls, and a rotor mounted for rotation within the outer housing. A plurality of compressed gas passages pass through the end walls to provide compressed gas flow to or from a respective substantially open end of the rotor. A drive arrangement is provided which is cooperable with an outer circumferential region of the rotor so that it is not necessary to provide a drive shaft which extends axially through desiccant material within the rotor.

Abstract: A rotary adsorbent dryer is provided which includes a stationary outer housing having spaced stationary end walls, and a rotor mounted for rotation within the outer housing. A plurality of compressed gas passages pass through the end walls to provide compressed gas flow to or from a respective substantially open end of the rotor. A drive arrangement is provided which is cooperable with an outer circumferential region of the rotor so that it is not necessary to provide a drive shaft which extends axially through desiccant material within the rotor.

Abstract: A multistage reciprocating air compressor compresses air to an elevated pressure level discharge with an intermediate pressure level discharge for use in blow molding of PET bottles and similar products. The air compressor has a first, second and third reciprocating piston stages with first, second and third actuators operable in response to respective sensed discharge pressure levels from the discharges to actuate inlet unloading elements.

Abstract: A multistage reciprocating air compressor compresses air to an elevated pressure level discharge with an intermediate pressure level discharge for use in blow moulding of PET bottles and similar products. The air compressor has a first, second and third reciprocating piston stages, including respective inlet unloading means, with first, second and third actuating means operable in response to respective sensed discharge pressure levels from the discharges to actuate inlet unloading means. The elevated pressure level discharge being from the third stage and the intermediate pressure level discharge being from an interstage region between at least one of the first and second stages or the second and third stages.

Abstract: A system for delivering dry compressed gas is provided, the gas being separated from any entrained liquid lubricant and then passed through a moisture absorber column to interact with a moisture-removing fluid. The fluid is a liquid lubricant or is maintained in a separate closed circuit relative to the liquid lubricant. A moisture stripping device receives some of the gas from the absorber column, which is passed in moisture exchange relation with the fluid before the fluid enters the column. The column has a housing defining a vertical absorption zone, and partition plates each defining gas flow holes. The plates have at least one tube passing therethrough, with an open upper end above one plate, and a lower end adjacent the next lower plate. The fluid passes down the tubes and across a top surface of each plate, with the gas flow passing upwardly through the holes in the plates.

Abstract: A rotary compressor system having a drive rotary compressor unit, a separator vessel (13) receiving compressed gas and entrained liquid from said compressor for collecting the liquid therein and for returning the liquid to a lower pressure zone of the compressor and a moisture absorber receiving compressed gas flow leaving a separation zone of the separator vessel and passing the compressed gas flow relative to a flow of said liquid such that moisture in the compressed gas flow is transferred to said liquid.

Abstract: The present invention discloses a gas compressor system capable of delivering dry clean compressed gas, the system including a driven compressor unit (8) typically including a rotary compressor (10) driven by a motor 11 with the compressed gas being separated from any entrained liquid lubricant in a separator vessel (13), the compressed gas being thereafter passed through a moisture absorber column (22) in moisture absorbing relationship with a fluid capable of removing moisture from said compressed gas, said fluid either also acting as said liquid lubricant or being maintained in a separate closed circuit relative to said liquid lubricant, and a moisture stripping device (32) preferably provided to receive a portion of the dry compressed gas discharged from the absorber column (22) and being passed in moisture exchange relationship with the fluid prior to the fluid being introduced into said absorber column (22), the moisture absorber column (22) having an outer housing (36) defining a vertically disposed ab

Abstract: A rotary compressor system having a driven rotary compressor unit (10, 11), a separator vessel (13) receiving compressed gas and entrained liquid from said compressor (10) for collecting the liquid therein and for returning the liquid to a lower pressure zone of the compressor (10) and a moisture absorber (22) receiving compressed gas flow leaving a separation zone of the separator vessel (13) and passing the compressed gas flow relative to a flow of said liquid such that moisture in the compressed gas flow is transferred to said liquid.

Abstract: A flooded compressor control system that comprises a flooded compressor (11), an inlet throttle valve (14) and a final filter (25) mounted separately from a separator vessel (23) wherein the inlet throttle valve (14) and the final filter (25) form a combined assembly, the final filter (25) further incorporates a minimum pressure valve (28) that controls the discharge of clean compressed gas from the final filter (25) resulting in a reduction in the number of pipe joints in the system.