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    Fluid transfer apparatus
    1.
    发明授权
    Fluid transfer apparatus 有权

    公开(公告)号：US12158149B2

    公开(公告)日：2024-12-03

    申请号：US17427440

    申请日：2019-10-04

    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

    Inventor： Yongkwon Koh ,  Jangsoon Kwon ,  Kijong Jang

    IPC: F04C2/22 ,  F01C21/10 ,  F02B53/00 ,  F04C2/344 ,  F04C11/00 ,  F04C15/00 ,  F04C18/22 ,  F04C23/00 ,  F04C25/02 ,  F04C29/00

    Abstract: The present invention provides a fluid transfer apparatus comprising: a rotating shaft comprising a rotation unit extending along an axial direction and a first eccentric unit and a second eccentric unit disposed to be spaced apart from each other along the axial direction; a first rotor housing forming a first fluid compression space in the shape of an epitrochoid curved surface; a second rotor housing forming a second fluid compression space in the shape of an epitrochoid curved surface, and positioned to be spaced apart from the first rotor housing along the axial direction; a first rotor disposed in the first fluid compression space so as to delimit the first fluid compression space into multiple variable-displacement spaces, and coupled to the first eccentric unit while surrounding the first eccentric unit in the radial direction of the first eccentric unit; and a second rotor disposed in the second fluid compression space so as to delimit the second fluid compression space into multiple variable-displacement spaces, and coupled to the second eccentric unit while surrounding the second eccentric unit in the radial direction of the second eccentric unit.

    PASSIVE COOLING SYSTEM FOR NUCLEAR REACTOR AND METHOD FOR OPERATING THE SAME
    2.
    发明公开
    PASSIVE COOLING SYSTEM FOR NUCLEAR REACTOR AND METHOD FOR OPERATING THE SAME 审中-公开

    公开(公告)号：US20240304346A1

    公开(公告)日：2024-09-12

    申请号：US18264291

    申请日：2021-09-24

    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

    Inventor： Sung Jae YI ,  Hyun Sik PARK

    IPC: G21C15/18 ,  G21C15/12 ,  G21C15/243

    CPC classification number: G21C15/18 ,  G21C15/12 ,  G21C15/243

    Abstract: Passive cooling systems and methods, in which an infinite cooling circulation occurs by itself while cooling water is passively circulated without separate operation and control of an operator and supply of an external power source in the event of an abnormality in a nuclear reactor. The passive cooling system includes an energy release space; an energy absorbing space to which a pressure in the energy release space is transferred; an energy transfer space which absorbs and cools heat transferred from the nuclear reactor vessel as the cooling water; an emergency cooling flow passage for transferring heat to the energy transfer space; a reactor thermal insulation vessel; a pressure equalization pipe to transfer water vapor and pressure in the reactor thermal insulation vessel to the energy absorbing space; and a coolant spray pipe for flowing pressurized cooling water by the pressure equalization pipe to the energy transfer space.

    Method for simultaneous analysis of radiocarbon and tritium
    3.
    发明授权
    Method for simultaneous analysis of radiocarbon and tritium 有权

    公开(公告)号：US12013499B2

    公开(公告)日：2024-06-18

    申请号：US17959811

    申请日：2022-10-04

    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

    Inventor： Hong Joo Ahn ,  Hwan Seo Park ,  Jong Kwang Lee ,  Ki Rak Lee ,  Kwang Jae Son

    IPC: B01D53/00 ,  B01D53/04 ,  G01N1/40 ,  G01N23/2202 ,  G01T1/167

    CPC classification number: G01T1/167 ,  B01D53/04 ,  G01N1/4022 ,  G01N23/2202

    Abstract: The present invention relates to a method for simultaneous analysis of radiocarbon and tritium, the method including (i) mixing a radioactive waste sample containing a radiocarbon nuclide and tritiated water, and an oxidizing agent; (ii) oxidizing the radiocarbon nuclide in the radioactive waste sample to a gas containing an oxide of the radiocarbon nuclide by the oxidizing agent while suppressing volatilization of compounds containing gamma radionuclides other than the radiocarbon nuclide and tritium; (iii) discharging the gas containing an oxide of the radiocarbon nuclide by injecting an inert gas to the mixture; (iv) vaporizing and discharging the tritiated water in the mixture; and (v) analyzing radioactivity of radiocarbon and tritium from the discharged gas containing an oxide of the radiocarbon nuclide and tritiated water, and an apparatus for analysis of the same.

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