HIGH-EFFICIENCY OCEAN THERMAL ENERGY CONVERSION POWER SYSTEM USING LIQUID-VAPOR EJECTOR AND MOTIVE PUMP

    公开(公告)号:EP3236066A4

    公开(公告)日:2018-02-14

    申请号:EP15797829

    申请日:2015-03-05

    CPC classification number: F03G7/05 F01K5/00 F01K7/16 Y02E10/34

    Abstract: There is provided a high efficiency ocean thermal difference power generating system by using liquid-vapor ejector and motive pump comprising: an evaporator for changing transferred refrigerant liquid into refrigerant vapor with high temperature and high pressure by the thermal exchange with surface seawater; a vapor-liquid divider which is installed at the outlet part of the evaporator and divides the refrigerants to liquid-state refrigerant and vapor-state refrigerant respectively; a distributor which is installed at the inlet of the evaporator and distributes the refrigerants flowed into the evaporator to multi-paths; a turbine for generating electric power by using the high pressure refrigerant vapor transferred from the liquid-vapor divider or the evaporator; a motive pump for increasing the pressure of the refrigerant liquid distributed from the distributor or the liquid-vapor divider; a liquid-vapor ejector for mixing the low pressure refrigerant vapor which passed the turbine and the high pressure refrigerant liquid which passed a motive pump, thereby proceeding expansion and compression; a condenser for condensing the refrigerants which was mixed in the liquid-vapor ejector by the thermal exchange with deep seawater; and a refrigerant circulation pump for increasing the pressure of the refrigerants which was condensed in the condenser up to the evaporation pressure and for circulating.

    COMBINED PROPELLER CAP FOR REDUCING ROTATING FLOW AND HUB VORTEX AND ENHANCING PROPULSION EFFICIENCY

    公开(公告)号:EP3150482A4

    公开(公告)日:2018-01-17

    申请号:EP15799494

    申请日:2015-05-22

    CPC classification number: B63H1/14 B63H1/20 B63H1/28

    Abstract: The present invention relates to the structure of a propeller cap. According to the present invention, in order to solve the problem with the existing PBCF (Propeller Boss Cap Fin) whereby manufacturing is difficult expensive due to precise machining, there is provided a combined propeller cap for reducing rotational flow and hub vortex and improving propulsive efficiency, the combined propeller cap being capable of reducing hub vortex cavitation that is generated behind a propeller by using a structure in which a diffusion type propeller cap is coupled to the end of a contraction type propeller cap, and being capable of additionally reducing the hub vortex cavitation by attaching guide fins at a contractive section or between the contractive section and a diffusive section of the propeller cap.

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