Abstract: An ejector cycle device includes a gas-liquid separator for separating a refrigerant flowing out of an ejector into gas-phase refrigerant and liquid-phase refrigerant. The gas-liquid separator further separates refrigeration oil from the refrigerant. The refrigeration oil used by the ejector cycle device is less compatible to the refrigerant on the low-pressure side than the compatibility of the refrigeration oil with the refrigerant on a high-pressure side.

Abstract: An ejector includes a nozzle and a needle valve formed in a tapered shape. The needle valve controls a throttle opening degree of the nozzle from a minimum degree to a maximum degree while an end section of the needle valve is positioned on a downstream side with respect to a throat section of the nozzle. Besides, a cross-sectional area of a nozzle diffuser is formed to be substantially constant, downstream of the throat section. Thus, a cross-sectional area of a substantial refrigerant passage defined by an inner surface of the nozzle and the needle valve is gradually widened in accordance with the tapered shape of the needle valve. Therefore, pressure loss accompanied with a rapid expanding can be suppressed. As a result, the throttle opening degree of the nozzle can be controlled while improving nozzle efficiency and ejector efficiency.

Abstract: This is a construction process of a client-server system which can manage the display screen and operating conditions of each client in a concentrated manner, display the history that a client used if necessary, and have a dialog with a specific client using a character, a figure, etc. A server keeps the screen definition information of all screens and screen transition information that a client displays, and a server transmits screen definition information to a client according to a demand from the screen display program arranged at a client. By saving the screen identifier of the screen that a client shows at this moment, a server can grasp the screen that each client is using, manage a client, and have a dialog with a client.

Abstract: An ejector includes a nozzle and a needle valve formed in a tapered shape. The needle valve controls a throttle opening degree of the nozzle from a minimum degree to a maximum degree while an end section of the needle valve is positioned on a downstream side with respect to a throat section of the nozzle. Besides, a cross-sectional area of a nozzle diffuser is formed to be substantially constant, downstream of the throat section. Thus, a cross-sectional area of a substantial refrigerant passage defined by an inner surface of the nozzle and the needle valve is gradually widened in accordance with the tapered shape of the needle valve. Therefore, pressure loss accompanied with a rapid expanding can be suppressed. As a result, the throttle opening degree of the nozzle can be controlled while improving nozzle efficiency and ejector efficiency.

Abstract: An ejector cycle device includes a gas-liquid separator for separating a refrigerant flowing out of an ejector into gas-phase refrigerant and liquid-phase refrigerant. The gas-liquid separator further separates refrigeration oil from the refrigerant. The refrigeration oil used by the ejector cycle device is less compatible to the refrigerant on the low-pressure side than the compatibility of the refrigeration oil with the refrigerant on a high-pressure side.

Abstract: A flocculation system for water treatment facilities comprises a flocculation tank having a plurality of baffles which divide the interior of the flocculation tank into a plurality of compartments. The baffles are arranged to provide intercompartmental openings between adjacent upstream and downstream compartments, which, in turn, are arranged to provide a serpentine flow path through the flocculation tank. A mechanical mixer is mounted in each compartment for supplementing the mixing energy provided by the serpentine flow, particularly during periods of low water flow rates.

Abstract: A hydraulic jet flash mixer in a system for treating waste water jets a secondary flow of water through a high-velocity nozzle towards a deflector assembly. In one embodiment, the deflector assembly is formed by a tip and a body, and the tip is spaced from, but spring biased toward, the body. The space between the tip and body acts as a nozzle for radially injecting a coagulant fed to the body by a pressurized supply line. In another embodiment, the deflector assembly is one piece, and the supply line is inside of and extends through the high-velocity nozzle such that coagulant is injected from a point between the nozzle and the deflector assembly.