Abstract: Torches are automatically refilled with a liquid fuel from a central reservoir pumped via a plumbing system, without directly monitoring local torch fuel levels. Instead, each torch includes a passive fuel overfill prevention valve. When refueling, the pump operates until all torches are filled. Refueling can cease after a set time, or when sensors report a backpressure and/or cessation of fuel flow. Pre-calibration establishes torch burning rates and/or maximum refill time. Time between refueling is predicted, based upon total burning time, which can be measured by torch heat sensors or determined according to a usage schedule or direct control of torch ignition and extinguishing by the controller. Reverse pumping can extinguish the torches, and wick ignitors can relight them sequentially. A service provider can monitor fuel consumption, establish a pattern of usage, and supply fuel in time to replenish the central reservoir, and/or other provide maintenance as needed.

Abstract: A method, system, and apparatus for managing variable, multi-phase fluid conversion to output fuel and energy for providing customizable management for processing a volume of natural gas including a volume of methane and a volume of other alkanes that may be cleaned of the other alkanes using a conversion system to create synthesis gas and other fuel products to be used in onsite or combined heat and power or cogeneration applications. In particular, the method, system, and apparatus provide for automated feedback and control directing various gas constituents to different application units with allocations according to settings system parameters to quickly and efficiently meet the demand for various products while making adjustments in real-time.

Abstract: A fuel level circuit for dual tank configuration includes fuel level sensors in each of two tanks and a fuel level display that can display the fuel level in one tank. The tank to be displayed on the fuel level display is selected by a flow diverting valve that selects the tank from which fuel will be delivered to a prime mover. A magnetic element moves with the flow diverting valve to actuate a magnetic switch to open or close a circuit element. A fuel selection relay places the fuel level display in communication with the fuel level sensor of the selected fuel tank in response to the magnetic switch opening and closing the circuit element.

Abstract: Disclosed herein are microfluidic systems with recirculation of fluid and computer-implemented methods of calculating conditions within the microfluidic systems. The microfluidic systems include a computing device and a microfluidic device having first and second reservoirs, at least one chamber, and a fluid path connecting the first reservoir, the chamber, and the second reservoir. The methods for calculating conditions include receiving a first reservoir fluid volume, a second reservoir fluid volume, a first concentration, and a second concentration. The methods further include receiving a time-dependent imposed pressure difference between the first reservoir and the second reservoir, then determining a hydraulic pressure difference and an effective pressure difference. The effective pressure difference is used to account for reactions occurring within the microfluidic device and to determine the value of the condition within the microfluidic device.

Abstract: Methods and electroplating systems for controlling plating electrolyte concentration on an electrochemical plating apparatus for substrates are disclosed. A method involves: (a) providing an electroplating solution to an electroplating system; (b) electroplating the metal onto the substrate while the substrate is held in a cathode chamber of an electroplating cell of electroplating system; (c) supplying the make-up solution to the electroplating system via a make-up solution inlet; and (d) supplying the secondary electroplating solution to the electroplating system via a secondary electroplating solution inlet. The secondary electroplating solution includes some or all components of the electroplating solution. At least one component of the secondary electroplating solution has a concentration that significantly deviates from its target concentration.

Abstract: A device and related method for producing a ready-to-use solution from a concentrate and a diluent includes an inlet for the diluent; an inlet for the concentrate; an outlet for the solution; a line extending from the inlet for the diluent via a confluence where diluent and concentrate meet, to the outlet; a mixing container arranged in the line between the confluence and the outlet and having a larger cross-section than parts of the line, which are arranged upstream and downstream of the mixing container; and a metering pump for the concentrate, which is connected on the suction side to the inlet for the concentrate and on the pressure side to the confluence and which operates in a pulsed manner. The metering pump works with a clock frequency, in which a plurality of pump surges are attributable to the dwell time of the liquid in the mixing container.

Abstract: Tube management structures for an automatic compounder system are provided. A tube management structure may be implemented as a backpack attached to a pump cartridge of the compounder system. Flexible tubing may extend from an output port of the pump cartridge into an internal recess of the backpack. A connector may be provided on an end of the tubing that extends out of the backpack through an opening in the backpack. An additional opening may be provided in the backpack in which the connector may be stored when the cartridge is not in use by the system. The compounder system may include a sensor configured to view the connector through an opening in the cartridge when the connector is disposed in the additional opening. The tubing may be pulled from within the backpack so that the connector can be connected to a receiving container.

Abstract: A hydraulic controller for a vehicle gearbox is provided. The controller includes a hydraulic actuator which has an oil supply port, a high-pressure hydraulic pump for providing a feed to a high-pressure line, a low-pressure hydraulic pump for providing a feed to a low-pressure line, a hydraulic reservoir for receiving the hydraulic medium from a return line, and a hydraulic control valve. The control valve includes at least three control positions and at least four valve ports. In a first control position, the high-pressure line is fluidly connected to the oil supply port for the regulation of the actuating force of the hydraulic actuator. In a second control position, the low-pressure line is fluidly connected to the oil supply port for the pre-charging of the hydraulic actuator. In a third control position, the hydraulic actuator is fluidly connected to the return line for the return of the hydraulic medium.

Abstract: A multiple pump system is disclosed. The multiple pump system may include a fluid tank and a multiple pump vessel connected to the fluid tank. The multiple pump vessel may include at least one first pump and at least one second pump located therein. In addition, the at least one first pump may be configured to dispense a fluid from the fluid tank at a first pressure, and the at least one second pump may be configured to dispense the fluid from the fluid tank at a second pressure. The first pressure may be different from the second pressure, such that the at least one first pump may be configured to dispense liquefied natural gas, and the at least one second pump may be configured to dispense compressed natural gas.

Abstract: Embodiments relate generally to a pump control system for a pressure sewer installation. The system comprises a controller arranged to control supply of power to a pump of the pressure sewer installation. The controller is arranged to receive an output signal from a sensor in a fluid reservoir of the pressure sewer installation, the output signal being indicative of a measured fluid level in the fluid reservoir. A memory is accessible to the controller and is arranged to store operation information pertaining to operation of the pressure sewer installation. A wireless transceiver is in communication with the controller to allow the controller to communicate with a remote server over a communications network.

Abstract: A system for blending polymers and other chemicals in an aqueous liquid is provided. Static mixers and tubes, preferably in one or more tube bundles, provide a volume sufficient to allow a residence time in the system to hydrate a polymer. Static mixers may be integrated with a tube bundle. The system may be mounted on a portable base such as a trailer. The concentration of polymer and chemicals in water may be controlled by a controller. A variable speed electric pump may be utilized to precisely control the amount of polymers or other chemicals added to the aqueous liquid.

Abstract: The invention relates to a device for draining and rinsing containers filled with fluid, comprising an accommodating unit for accommodating the container and comprising a removal unit, which has a removal line, a coupling connected to the removal line for connecting the a removal opening of the container, and a pumping apparatus by means of which the fluid in the container can be pumped out of the container, and comprising a rinsing unit, which has a rinsing pin, a rinsing line connected to the rinsing pin, and a control apparatus, wherein the rinsing pin can be moved by means of the control apparatus in such a way that the rinsing pin automatically pierces a wall of the container and rinses out the container after the container has been drained.

Abstract: The controller of the plural component proportioner (10) dispenses both components (or all three if a three component material) as necessary to maintain the correct mix ratio. The fluid displacement measuring technique described allows this proportioning to take place with the “A” or main component pump always able to supply fluid to the spray gun without being stopped. The “B” component, at a higher pressure, is added as necessary to control ratio. The control can determine whether the pumps were properly loaded with fluid, and the fluid was properly compressed for accurate measurement. This technique allows for the proportioned fluids to be provided to the spray gun(s) at high flow rates and consistent spray pressure without interruption.

Abstract: A chassis includes a base, a number of fans mounted in the base, and an air guiding member. The base includes a bottom wall and a sidewall perpendicularly connected to a side of the bottom wall. The fans are mounted on the bottom wall. The air guiding member includes a fixing portion slidably mounted to the sidewall and a guiding portion pivotably connected to the fixing portion. The guiding portion is pivotable to adjust the direction of airflow from the fans.

Abstract: The invention relates to a method for realizing a vacuum in at least one vacuum chamber. The method comprises providing an arrangement comprising a plurality of vacuum chambers, wherein each vacuum chamber is connected to a shared vacuum system. The shared vacuum system comprises a plurality of turbo molecular pumps, at least one common fore pump, and a piping system comprising one or more pipes for connecting the at least one common fore pump to each of the plurality of turbo molecular pumps. Each turbo molecular pump is separately connected to a corresponding vacuum chamber. The piping system further comprises flow regulators for controlling a flow within the piping system. The method further comprises selecting at least one vacuum chamber for pump-down, and separately pumping down the at least one selected vacuum chamber by means of the shared vacuum system.

Abstract: A multi-phase pump system and method that directs incoming two-phase flow into a fixed cylinder that contains a vortical flow. The system includes a momentum-driven, vortex phase separator, the phase separator accepting liquid-gas flows at any ratio from all liquid to all gas. The pump system also includes a liquid prime mover; a gas prime mover; and a control system. The vortical flow is driven by injecting the two-phase or another fluid stream tangent or approximately tangent to the curved surface of the cylindrical chamber. Inertial forces generated within the vortical flow drive a buoyancy-driven separation process within the cylindrical chamber. Single-phase prime movers are then used to pump the separated phases to a higher pressure.

Abstract: The present invention provides a water supply apparatus capable of performing a backup operation, without lowering water supply capability, when a failure has occurred in one control substrate due to surge or noise caused by lightning or due to lifetimes of various sensors, by switching to the other control substrate, and capable of reliably performing the backup operation by means of devices that prevent failure of the control substrates. The water supply apparatus (1) includes: a plurality of pumps (3); a plurality of inverters (INV) each configured to change and control a rotational frequency of a corresponding one of the plurality of pumps (3); and a plurality of control substrates (CN) configured to control the plurality of inverters (INV). When an abnormality occurs in one control substrate, other control substrate backs up the one control substrate to thereby allow the water supply apparatus to continue its operations.

Abstract: A first inlet port extends radially through a valve sleeve into an internal bore. A first outlet port extends radially outwardly through an outer periphery of the valve sleeve. A second inlet port on an opposed side of the first outlet port from the first inlet port, extends radially through a wall of the valve sleeve. A valve spool is received in the internal bore and has a first channel at an outer peripheral surface selectively communicating the first inlet port to the first outlet port. The valve spool has a second channel at the outer peripheral surface that communicates the second inlet port to an axial vent formed in an internal surface of the valve sleeve. The axial vent extends axially to communicate the second channel to the first outlet port. A pumping system is also disclosed.

Abstract: An improved system, apparatus and method for injecting a chemical from a storage tank into a natural gas or liquefied petroleum gas pipeline at a flow-controlled injection rate is provided. The system, apparatus and method including a pair of positive-displacement pumps driven in substantially complementary fashion by a single driver, a controller controlling the driver, and each pump being fed from the storage tank and discharging chemical into the pipeline. The system, apparatus and method may also include a second pair of positive-displacement pumps having substantially similar displacement and operatively connected to the first pair of positive-displacement pumps, the first pair of positive-displacement pumps being driven in a substantially complementary fashion with the second pair of pumps by a single driver or a pair of drivers.

Abstract: A multiple pump system is disclosed. The multiple pump system may include a fluid tank and a multiple pump vessel connected to the fluid tank. The multiple pump vessel may include at least one first pump and at least one second pump located therein. In addition, the at least one first pump may be configured to dispense a fluid from the fluid tank at a first pressure, and the at least one second pump may be configured to dispense the fluid from the fluid tank at a second pressure. The first pressure may be different from the second pressure, such that the at least one first pump may be configured to dispense liquefied natural gas, and the at least one second pump may be configured to dispense compressed natural gas.

Abstract: Disclosed is an apparatus for improving excavating operation characteristic and grading operation characteristic of an excavator. The apparatus includes a solenoid valve group and a hydraulically controlled selector valve. An oil controlling output A1 of the solenoid valve group is configured in series with oil controlling input a1 of the hydraulic control valve. An oil controlling output A2 of the solenoid valve group is configured in series with a pilot control end XBa2 of a multi-port valve group. An oil return port T1 of the solenoid valve group is connected to the hydraulic oil tank. An oil controlling output b1 of the hydraulically controlled selector valve is connected to a pilot control end XAb2 of the multiplexer valve group, and an oil return port T2 of the hydraulically controlled selector valve is connected with the hydraulic oil tank. The apparatus improves operational efficiency and control comfortability.

Abstract: The cart comprises a lateral face by which it is adapted to be juxtaposed against another cart. It further comprises a first pump, a second pump disposed below said first pump and laterally offset relative thereto, and a tank adapted to receive a feed container provided to contain said biological liquid, said tank being disposed above said first pump and offset laterally relative thereto. The installation comprises one said cart, a filter and a second cart, juxtaposed against said first cart and of which the upper face supports said filter such that an outlet point of said first pump is situated substantially facing an inlet/outlet aperture of said filter.

Abstract: A freezer for a product includes a housing having a sidewall defining a chamber in the housing, and an inlet and an outlet in communication with the chamber; and a pair of pistons operatively associated with the housing and in communication with the chamber, the pair of pistons operable out of phase with each other for oscillating a gas flow within the chamber. A method is also provided for reducing a temperature of a product in a freezer.

Abstract: A portable vegetation treatment system includes a primary pump, a secondary pump, an intake-port assembly, a distribution assembly, and a control assembly. The primary pump is configured to couple with a diluent source while the secondary pump is configured to couple with a reservoir, containing a chemically-based fluid. The chemically-based fluid may be a concentrate, pre-mixed concentrate or other fluid(s), requiring dilution or combination with another fluid before application. The secondary pump includes components that meter one or more chemically-based fluids, during active operation. These components also substantially restrict migration or inappropriate flow of the chemically-based fluid when the system is inactive or in a passive state.

Abstract: A delivery unit for a liquid additive includes a first pump with a first suction port and a first pressure port, a second pump with a second suction port and a second pressure port, and a feed device. The feed device is connected to the first pressure port through a first line system and the first suction port is connected to a tank for the liquid additive through a second line system. The second pressure port is connected to the tank through a third line system and the second line system and the third line system are separated from one another. A method for operating a delivery unit and a motor vehicle having a delivery unit are also provided.

Abstract: A compressor is provided for pressurizing carbon dioxide produced by a carbon dioxide production plant and introducing the pressurized carbon dioxide to a carbon dioxide sequestration system. The compressor has a measuring system which determines the amount of carbon dioxide produced by the production plant. It also has a control system which varies the power of the compressor depending on the determined amount of produced carbon dioxide.

Abstract: An insulation gas recovery and charge apparatus is provided comprising a pump, a connect, an inflatable collection device and at least one valve.

Abstract: A fluid compression system is disclosed. The fluid compression system may include a first compressor disposed in a first fluid conduit, a first valve disposed in the first fluid conduit upstream of the first compressor, a second valve disposed in the first fluid conduit downstream of the first compressor, a second compressor in fluid communication with the first compressor and configured to selectively pump fluid from the first compressor.

Abstract: A fuel supply system includes a plurality of fuel pumps, and one suction filter. The suction filter includes connection portions that are connected to pump inlets of the fuel pumps, and an interval adjusting member that adjusts the interval between the connection portions in accordance with the interval between the fuel pumps. Thus, it is possible to fit the suction filter to the fuel pumps without changing the interval between the fuel pumps. Because the interval between pump outlets is not changed, it is possible to minimize the problems that are likely to occur when the suction filter is fitted to the fuel pumps.

Abstract: The invention relates to a method for realizing a vacuum in at least one vacuum chamber. The method comprises providing an arrangement comprising a plurality of vacuum chambers, wherein each vacuum chamber is connected to a shared vacuum system. The shared vacuum system comprises a plurality of turbo molecular pumps, at least one common fore pump, and a piping system comprising one or more pipes for connecting the at least one common fore pump to each of the plurality of turbo molecular pumps. Each turbo molecular pump is separately connected to a corresponding vacuum chamber. The piping system further comprises flow regulators for controlling a flow within the piping system. The method further comprises selecting at least one vacuum chamber for pump-down, and separately pumping down the at least one selected vacuum chamber by means of the shared vacuum system.

Abstract: A hydraulic system for a hybrid module which is located between an engine and a transmission includes a parallel arrangement of a mechanical pump and an electric pump. Each pump is constructed and arranged to deliver oil to other portions of the hydraulic system depending on the operational mode. Three operational modes are described including an electric mode, a transition mode, and a cruise mode. Various monitoring and control features are incorporated into the hydraulic system.

Abstract: A powder delivery apparatus for transporting powder from one or more hoppers to one or more powder applicators. A cross feed network of multi-directional valves and fluid connections is interposed between transfer pumps coupled to the outlets of the hoppers to provide alternately selectable flow paths for the powder from each hopper to selected one of the powder applicators.

Abstract: Disclosed is an exemplary hydraulic system including a first fluid circuit and a second fluid circuit. The hydraulic system further includes a first pump fluidly connected to the first fluid circuit and fluidly connectable to the second fluid circuit, and a second pump fluidly connectable to the first and second fluid circuits. The hydraulic system includes a first valve that may be arranged in a first position for fluidly disconnecting the first and second pumps from the second fluid circuit, a second position for fluidly connecting the second pump to the second fluid circuit and fluidly disconnecting the first pump from the second fluid circuit, and a third position for fluidly connecting the first and second pumps to the second fluid circuit.

Abstract: A portable, refrigerant recovery unit for transferring refrigerant from a refrigeration system to a storage tank. The unit includes two, opposed piston heads rigidly attached to respective piston rods that extend along a common fixed axis and are rigidly attached to a scotch yoke arrangement. In operation, incoming refrigerant is simultaneously and continuously directed to the opposing piston heads wherein the forces of the pressurized refrigerant on them counterbalance one another. The flow path of the refrigerant is designed to be isolated from the piston rods and drive mechanism to avoid any exposure to any contaminants in the refrigerant. However, to the extent the undersides of the piston heads and portions of the piston rods may be so exposed, a chamber is provided adjacent each piston underside to capture or collect any contaminants and direct them harmlessly back through one-way exhaust lines into the incoming refrigerant lines.

Abstract: A system for delivering frac water at high pressure is provided, including a first pump positionable within a tank, the first pump configured to receive water from within the tank and output the water at pressure to a first pressure tank; a second pump positionable above the first pressure tank, the second pump configured to receive water from the first pressure tank and output the water at pressure to a second pressure tank; and a third pump positionable above the second pressure tank, the third pump configured to receive water from the second pressure tank and output pressurized water to a discharge piping, the discharge piping leading said pressurized water over a wall of said tank.

Abstract: An apparatus is disclosed for supplying fluid to a continuously variable transmission which has a lubrication system and at least one transmission control system. The apparatus comprises first and second pumps (120, 122). The first pump has an output which is connectable to the lubrication system through a supply control valve arrangement (132). The second pump has an output which is connectable to the transmission control system. The apparatus has a transfer passage (128) through which the first pump can be connected to the transmission control system. The supply control valve arrangement is adapted to selectively throttle supply of fluid from the output of the first pump to the lubrication system in order to cause fluid output from the first pump to be diverted through the transfer passage to the transmission control system.

Abstract: An apparatus and method is provided for establishing a constant flow rate of a fluid, such as a gas or a liquid, into a process system. The apparatus typically includes a fluid pressure regulator, a rotameter, and a back pressure regulator. The system may also include a throttle valve. Establishing a constant flow rate involves established a fixed pressure drop across a fixed flow resistance device, such as a rotameter. The pressure of the output of the rotameter is adjusted to be higher than the backpressure from the process system.

Abstract: A system for delivering water is provided, including: a structure placeable within a water tank, the structure defining at least first and second compartments, the compartments separated by a baffle; and a bottom panel, said bottom panel having padding between the panel and a floor of the tank; first and second pumps, each of the first and second pumps placeable within the respective first and second compartments; the first and second pumps in fluid communication with a first end of respective first and second water transportation systems; and the first and second water transportation systems each having a second end, the second ends in fluid communication to a manifold.

Abstract: A system includes a high pressure accumulator; a low pressure reservoir; and a plurality of pumps configured to control the flow of fluid between the high pressure accumulator and the low pressure reservoir, a battery; an electric motor powered by the battery; a management unit in communication with the electric motor and the plurality of pumps.

Abstract: A method and device for controlling an extracorporeal blood treatment apparatus, which can be operated as a hemodialysis apparatus, hemofiltration apparatus or hemodiafiltration apparatus, are disclosed. The method and device make provision, apart from balancing the fluids as a function of the weights of the containers, for the measurement of the weight reduction or increase of at least one of the containers in the time interval in which the pump assigned to the respective container performs a preset number of revolutions or pump strokes. The change in the weight of the container for a half or one pump revolution can be determined. The delivery rate of the respective pump is ascertained from the measured weight reduction or increase in the specific time interval, thereby permitting the precise determination of the actual delivery rate of one or more pumps. The actual delivery rates of all the pumps are preferably monitored.

Abstract: A power pack unit includes a first hydraulic pump including a first pump enclosure accommodating a first pump cartridge. A second hydraulic pump includes a second pump enclosure accommodating a second pump cartridge. A hydraulic fluid reservoir is positioned between the first and second hydraulic pumps. A first end of the reservoir is secured to the first pump enclosure and a second end of the reservoir is secured to the second pump enclosure. The first and second hydraulic pumps and the reservoir can extend along a common axis. First and second motors can be connected to the first and second pumps. The entire structure can extend along a common axis.

Abstract: The present application provides a gas compression system for use with a gas stream. The gas compression system may include a number of compressors for compressing the gas stream, one or more ejectors for further compressing the gas stream, a condenser positioned downstream of the ejectors, and a waste heat source. A return portion of the gas stream may be in communication with the ejectors via the waste heat source.

Abstract: A closed nebulizing system for removing bubbles includes a first pump, a nebulizing module and a second pump. The first pump is for providing a fluid. The nebulizing module includes an outlet channel, an inlet channel connected with the first pump, and a plurality of nozzles for nebulizing and ejecting part of the fluid. The second pump is connected with the outlet channel for outputting non-nebulized fluid. The first pump, the nebulizing module and the second pump form a closed fluid loop, so that the fluid continuously contacts with the plurality of nozzles and bubbles generated during nebulization process are evacuated from the nebulizing module.

Abstract: A sluice system for a vacuum coating facility for coating substrates that can be moved through the vacuum coating in a direction of conveyance comprises a prevacuum slice chamber and a transfer chamber adjoining a coating chamber, wherein a fine vacuum can be regulated before the transfer chamber on the input side in the direction of conveyance and after the transfer device on the output side in the direction of conveyance. The prevacuum sluice chamber is directly adjacent to the transfer chamber and the fine vacuum can be regulated in the prevacuum sluice chamber. A high-vacuum pump system can also alternatively and selectively be connected to the prevacuum sluice chamber.

Abstract: A working vehicle, wherein flows of hydraulic oil delivered under pressure from two or more hydraulic pumps are joined together and the joined hydraulic oil can be taken out. A working vehicle is provided with two hydraulic pumps independent of each other and adapted to deliver hydraulic oil under pressure, a mode switching valve (230) capable of being switched to a flow joining position (K) at which flows of the hydraulic oil delivered under pressure by the two hydraulic pumps are joined together, PTO ports (260, 261) out of which the hydraulic oil is taken, and a PTO switching valve (240) provided downstream of the mode switching valve (230) and switching flow of the hydraulic oil so that the oil can be delivered under pressure to the PTO ports (260, 261).

Abstract: An apparatus energizes a consumer of a pressurized fluid using a high pressure source and a low pressure source. The apparatus may include a fluid circuit in fluid communication with the consumer. The fluid circuit may have a first and a second reservoir. In one arrangement, the fluid circuit may have a flow control device in pressure communication with the first pressure source and the second pressure source, the flow control device being configured to cycle a pressure applied to the first and the second reservoirs using the first pressure source and the second pressure source. In some arrangements, the fluid circuit may include a flow device configured to flow fluid from a second branch to a first branch of the reservoir, and a flow control device in fluid communication with the flow device, the flow control device being configured to cycle a pressure applied to the flow device.

Abstract: A fluid compression system is disclosed. The fluid compression system may include a first compressor disposed in a first fluid conduit, a first valve disposed in the first fluid conduit upstream of the first compressor, a second valve disposed in the first fluid conduit downstream of the first compressor, a second compressor in fluid communication with the first compressor and configured to selectively pump fluid from the first compressor.

Abstract: The present invention provides novel motor-compressor systems and methods useful for handling acid gas, by-produced produced in large quantities from natural gas refining. In one embodiment, a novel motor-compressor system comprises first compressor; a pressure vessel configured to receive a compressed gas from the first compressor; a heat exchanger coupled to the pressure vessel configured to cool the compressed gas and provide a cooled compressed gas; and an electric motor housed within the pressure vessel, wherein the electric motor is mechanically coupled to the first compressor, and wherein the pressure vessel is configured to receive at least a portion of the cooled compressed gas from the heat exchanger and contact the electric motor. The methods and systems described herein are particularly useful in acid gas re-injection operations where large quantities of acid gas are subjected to compression at high pressure and leakage prevention is critical.

Abstract: A fuel delivery system is provided including one or more pump assemblies and one or more controllers configured to control the one or more pump assemblies. The fuel delivery system may conserve energy by selectively activating the one or more pump assemblies and the one or more controllers.

Abstract: A fuel system for use in a fuel tank having first and second tank portions includes first and second fuel pumps in the first and second tank portions, respectively. A first fuel reservoir is provided in the first tank portion and a second fuel reservoir is provided in the second tank portion. A first crossover fuel line extends between the first and second tank portions, and a second crossover fuel line extends between the first and second tank portions. A first jet pump in the first tank portion communicates with the first crossover fuel line for transferring fuel through the first crossover fuel line to the second tank portion, and a second jet pump in the second tank portion communicates with the second crossover fuel line for transferring fuel through the second crossover fuel line to the first tank portion.