Abstract: A reinforcement bar corrosion evaluation device capable of efficiently and quantitatively evaluating a degree of corrosion of reinforcement bar in a reinforced concrete (RC) deck bridge.

Abstract: An acquisition section (12) acquires a reflected wave intensity image in which a reflected wave intensity of an electromagnetic wave that has been radiated in a direction through a surface of a reinforced concrete structure toward an interior of the reinforced concrete structure at respective positions on the surface of the reinforced concrete structure is expressed by pixel values of pixels corresponding to each of the respective positions. A setting section (14) sets an evaluation target range in the acquired reflected wave intensity image. A computation section (16) computes a statistical indicator of a type set according to the set range for pixel values in the reflected wave intensity image. An evaluation section (18) evaluates a degree of deterioration of the reinforced concrete structure using the computed values.

Abstract: A closed loop cooling system for electronic equipment. The system includes a cabinet having a top panel, walls, and a door defining an enclosure. A rack is within the enclosure, and the electronic equipment is mounted thereto. An evaporator is within the enclosure below the electronic equipment. Recirculated cabinet airflow warmed by the electronic equipment is directed to the evaporator, cooled by the evaporator, and directed back to the electronic equipment to cool the electronic equipment. A condenser is in fluid communication with the evaporator to circulate coolant therebetween. Ambient airflow from outside the cabinet flows across the condenser to cool coolant flowing therethrough. The recirculated cabinet airflow is maintained independent of the ambient airflow, thereby preventing introduction of added heat or contaminates into the recirculated cabinet airflow, and not affecting air pressure of the ambient airflow.

Abstract: A closed loop cooling system for electronic equipment. The system includes a cabinet having a top panel, walls, and a door defining an enclosure. A rack is within the enclosure, and the electronic equipment is mounted thereto. An evaporator is within the enclosure below the electronic equipment. Recirculated cabinet airflow warmed by the electronic equipment is directed to the evaporator, cooled by the evaporator, and directed back to the electronic equipment to cool the electronic equipment. A condenser is in fluid communication with the evaporator to circulate coolant therebetween. Ambient airflow from outside the cabinet flows across the condenser to cool coolant flowing therethrough. The recirculated cabinet airflow is maintained independent of the ambient airflow, thereby preventing introduction of added heat or contaminates into the recirculated cabinet airflow, and not affecting air pressure of the ambient airflow.

Abstract: A cooling system for electronic equipment including an evaporator, a rack to which the electronic equipment can be mounted above the evaporator, and a condenser spaced apart from the evaporator. Air warmed by the electronic equipment is directed to the evaporator, cooled at the evaporator, and directed back to the electronic equipment to cool the electronic equipment.

Abstract: A cooling system for electronic equipment including an evaporator, a rack to which the electronic equipment can be mounted above the evaporator, and a condenser spaced apart from the evaporator. Air warmed by the electronic equipment is directed to the evaporator, cooled at the evaporator, and directed back to the electronic equipment to cool the electronic equipment.

Abstract: A rotary valve (1) includes a valve body (2) formed with a chamber communication passage (24) for flowing a main fluid and a vent communication passage (25) for discharging the main fluid and a cylindrical valve member (3) rotatably held in the valve body (2) and formed with a main passage (31) for flowing the main fluid. The cylindrical valve member (3) is rotated to switch the connection of the main passage (31) between the chamber communication passage (24) and the vent communication passage (25). The rotary switching valve (1) further includes a purge gas passage for passing purge gas in a clearance (11) between the valve body (2) and the cylindrical valve member (3), the purge gas being supplied to the clearance (11) to prevent the main fluid from leaking out of the main passage (31).

Abstract: A rotary valve (1) includes a valve body (2) formed with a chamber communication passage (24) for flowing a main fluid and a vent communication passage (25) for discharging the main fluid and a cylindrical valve member (3) rotatably held in the valve body (2) and formed with a main passage (31) for flowing the main fluid. The cylindrical valve member (3) is rotated to switch the connection of the main passage (31) between the chamber communication passage (24) and the vent communication passage (25). The rotary switching valve (1) further includes a purge gas passage for passing purge gas in a clearance (11) between the valve body (2) and the cylindrical valve member (3), the purge gas being supplied to the clearance (11) to prevent the main fluid from leaking out of the main passage (31).

Abstract: A gas flow rate verification unit capable of enhancing reliability of gas flow rate verification. The gas flow rate verification unit has a first cutoff valve that is connected to a flow rate control device and to which gas is inputted, a second cutoff valve for discharging the gas, a communication member for allowing the first cutoff valve and the second cutoff valve to communicate with each other, a pressure sensor for detecting the pressure of the gas supplied between the first cutoff valve and the second cutoff valve, a temperature detector for detecting the temperature of the gas supplied between the first cutoff valve and the second cutoff valve, and a control means for verifying the flow of the gas flowing in the flow control device, the verification being performed by using both the result of the pressure detected by the pressure sensor and the result of the temperatures detected by the temperature detector.

Abstract: A gas flow rate verification unit capable of enhancing reliability of gas flow rate verification. The gas flow rate verification unit has a first cutoff valve that is connected to a flow rate control device and to which gas is inputted, a second cutoff valve for discharging the gas, a communication member for allowing the first cutoff valve and the second cutoff valve to communicate with each other, a pressure sensor for detecting the pressure of the gas supplied between the first cutoff valve and the second cutoff valve, a temperature detector for detecting the temperature of the gas supplied between the first cutoff valve and the second cutoff valve, and a control means for verifying the flow of the gas flowing in the flow control device, the verification being performed by using both the result of the pressure detected by the pressure sensor and the result of the temperatures detected by the temperature detector.

Abstract: A solenoid valve capable of handling a corrosive control fluid and developing an increased attraction force. The solenoid valve 1 is adapted such that a fixed core is located in a wound coil 29 and protruding through the lower surface of the coil, a plunger 16 holding a valve sheet 17 is supported by a plate spring 18 under the fixed core, the valve sheet 17 is normally retained in contact with a valve seat 13 by spring force of the plate spring 18, and the valve sheet 17 is separated from the valve seat against the spring force of the plate spring 18 when the coil 29 is energized.

Abstract: A solenoid valve capable of handling a corrosive control fluid and developing an increased attraction force. The solenoid valve 1 is adapted such that a fixed core is located in a wound coil 29 and protruding through the lower surface of the coil, a plunger 16 holding a valve sheet 17 is supported by a plate spring 18 under the fixed core, the valve sheet 17 is normally retained in contact with a valve seat 13 by spring force of the plate spring 18, and the valve sheet 17 is separated from the valve seat against the spring force of the plate spring 18 when the coil 29 is energized.

Abstract: A sealing device for a ship's propeller shaft installed around the propeller shaft in which longitudinally spaced annular iron pole blocks, and circularly spaced permanent magnets fixed between the blocks are mounted in a cylindrical housing surrounding the propeller shaft, and a magnetic fluid fills gaps between the magnets and the annular iron pole blocks and either a liner mounted about the shaft or the shaft itself. The magnetic fluid serves as a sealant and completes a magnetic circuit which maintains a well defined thickness of magnetic fluid sealant and a high pressure seal even under great mechanical stress, thereby minimizing frictional power loss and wear to the propeller shaft or sleeves which are conventionally shrink-fitted thereto.

Abstract: An intraoffice trunk switching system wherein a connecting path between the called subscriber and the intraoffice trunk is established first; the connecting path between the calling subscriber and the intraoffice trunk to which the called subscriber is connected is then selected so that if no idle channel is available the first connecting path is released and simultaneously therewith the connecting operation between the calling subscriber and the intraoffice trunk is stopped and an idle intraoffice trunk is selected. The connecting path between the called subscriber and the selected intraoffice trunk is established and then the connecting path between the calling subscriber and the selected intraoffice trunk is set to improve the link block ratio of the intraoffice connection.