A hydrogen pressurization system includes: an electrochemical hydrogen pump being configured to transfer hydrogen in a hydrogen-containing gas to be supplied to an anode to a cathode through an electrolyte membrane, and pressurize the hydrogen; and a first removal unit through which an off-gas discharged from the cathode of the electrochemical hydrogen pump and the hydrogen-containing gas to be supplied to the anode flow with a water permeable membrane interposed therebetween, the first removal unit being configured to remove at least one of water vapor and water liquid contained in the off-gas.

A manufacturing method of micro channel structure is disclosed and includes steps of: providing a substrate; depositing and etching to form a first insulation layer; depositing and etching to form a supporting layer; depositing and etching to form a valve layer; depositing and etching to form a second insulation layer; depositing and etching to form a vibration layer, a lower electrode layer and a piezoelectric actuating layer; providing a photoresist layer and depositing and etching to form a plurality of bonding pads; depositing and etching to from a mask layer; etching to form a first chamber; and etching to form a second chamber.

A system and method of using a source of low-pressure refrigerant for a cryotherapy procedure. The system may generally include a fluid reservoir and a fluid flow path in thermal exchange with the fluid reservoir, the fluid flow path including a thermal exchange device in thermal exchange with the fluid reservoir, a compressor in fluid communication with the thermal exchange device, a condenser, a reversing valve located between the compressor and the condenser, and an expansion valve located between the condenser and the thermal exchange device. The method may include transferring a low-pressure refrigerant to a first fluid reservoir, reducing the temperature of the refrigerant within the first fluid reservoir, increasing the temperature of the refrigerant within the first fluid reservoir, and transferring the pressurized refrigerant from the first fluid reservoir to a second fluid reservoir.

A system for mounting at least one cylindrical electrolytic capacitor on a heat sink, the heat sink having at least one bore for at least partially receiving a cylindrical electrolytic capacitor, and the bore partially or fully encompassing the cylindrical electrolytic capacitor once it has been received, wherein lateral surfaces of the cylindrical electrolytic capacitor are mechanically and thermally connected to surfaces forming the bore. The system providing thermal cooling of the electrolytic capacitor and enabling substantially uniform thermal cooling of the capacitor. A method for producing a connection between the at least one cylindrical electrolytic capacitor and the heat sink, and to a connection, obtainable by the method, between the at least one electrolytic capacitor and the heat sink.

The present disclosure provides a system and method for removing a residual pressure of compressed air in a motor driven air compressor management system applied to an eco-friendly vehicle. That is, the present disclosure provides a system and a method for removing a residual pressure in a motor driven air compressor management system, which allow a continuous smooth operation of a motor driven air compressor by easily removing a residual pressure of compressed air before a subsequent operation of the motor driven air compressor even though the residual pressure of the compressed air, which fills in an air tank during an operation of the motor driven air compressor, remains according to a tuning off of the motor driven air compressor.

The present disclosure provides a system and method for removing a residual pressure of compressed air in a motor driven air compressor management system applied to an eco-friendly vehicle. That is, the present disclosure provides a system and a method for removing a residual pressure in a motor driven air compressor management system, which allow a continuous smooth operation of a motor driven air compressor by easily removing a residual pressure of compressed air before a subsequent operation of the motor driven air compressor even though the residual pressure of the compressed air, which fills in an air tank during an operation of the motor driven air compressor, remains according to a tuning off of the motor driven air compressor.

A blower including a duct configured to allow air to flow in and out and a plurality of blades disposed to be parallel to the duct. Each of the blades including a first part, a second part, and an airflow generator configured to generate airflow in a direction from the inlet to the outlet by applying a voltage between the first electrode and the second electrode which are disposed between a first electrode on a side of the inlet, a second electrode on a side of the outlet, and a dielectric. In a cross section of the blade in the airflow direction when cut in a cross section perpendicular to each of the blades, the first part has a thickness decreasing in a direction toward the inlet and the second part has a thickness decreasing in a direction toward the outlet.

A system and method of using a source of low-pressure refrigerant for a cryotherapy procedure. The system may generally include a fluid reservoir and a fluid flow path in thermal exchange with the fluid reservoir, the fluid flow path including a thermal exchange device in thermal exchange with the fluid reservoir, a compressor in fluid communication with the thermal exchange device, a condenser, a reversing valve located between the compressor and the condenser, and an expansion valve located between the condenser and the thermal exchange device. The method may include transferring a low-pressure refrigerant to a first fluid reservoir, reducing the temperature of the refrigerant within the first fluid reservoir, increasing the temperature of the refrigerant within the first fluid reservoir, and transferring the pressurized refrigerant from the first fluid reservoir to a second fluid reservoir.

A drive system for a fluid end of a reciprocating pump assembly including a drive member and a power end housing having a crankshaft rotatably disposed therein. The assembly includes a gearbox secured to the power end housing, the gearbox operatively connecting the drive member to the crankshaft for rotation thereof. The assembly further includes at least one arm member extending between the gearbox and the power end housing, the at least one arm member positioned to resist relative movement between the gearbox and the power end housing.

A drive system for a fluid end of a reciprocating pump assembly including a drive member and a power end housing having a crankshaft rotatably disposed therein. The assembly includes a gearbox secured to the power end housing, the gearbox operatively connecting the drive member to the crankshaft for rotation thereof. The assembly further includes at least one arm member extending between the gearbox and the power end housing, the at least one arm member positioned to resist relative movement between the gearbox and the power end housing.