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    Mechanical system for generating mechanical energy from liquid nitrogen, and corresponding method
    3.
    发明授权
    Mechanical system for generating mechanical energy from liquid nitrogen, and corresponding method 有权

    公开(公告)号：US11187114B2

    公开(公告)日：2021-11-30

    申请号：US16332208

    申请日：2017-08-30

    申请人： Eric Dupont

    发明人： Eric Dupont

    IPC分类号： F01K25/10 ,  F17C9/04 ,  F01K13/00 ,  F17C7/04

    摘要： The invention relates to a system for generating mechanical energy, comprising at least: a compressor; an expander; a heat exchanger; said system having a motor operative mode in which said system additionally comprises: means for the intake of pressurised liquid nitrogen in a liquid nitrogen intake inlet of said exchanger, means for the intake of air or gaseous nitrogen in an air or gaseous nitrogen intake inlet of said exchanger, means for discharging vaporised nitrogen at a vaporised nitrogen outlet of said exchanger, and means for discharging air or cooled nitrogen at another outlet of said exchanger for air or cooled gaseous nitrogen; means for the intake of said vaporised nitrogen into the interior of said expander in order to expand same; means for the intake of the air or cooled gaseous nitrogen into said compressor so as to produce compressed air or gaseous nitrogen therein.

    Ship
    4.
    发明授权
    Ship 有权

    公开(公告)号：US11136104B2

    公开(公告)日：2021-10-05

    申请号：US16090077

    申请日：2016-10-21

    申请人： DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.

    发明人： Seung Chul Lee ,  Yoon Kee Kim

    IPC分类号： B63J2/14 ,  B63B25/16 ,  F17C6/00 ,  F17C9/04 ,  F17C9/02 ,  F02M21/02

    摘要： A ship comprises: a tank; a multistage compressor for compressing a boil-off gas discharged from a storage tank and comprising a plurality of compression cylinders; a first heat exchanger for heat exchanging a fluid, which has been compressed by the multistage compressor, with the boil-off gas discharged from the storage tank and thus cooling the same; a first decompressing device for expanding a flow (“flow a1”) partially branched from the flow (“flow a”) that has been cooled by the first heat exchanger; a third heat exchanger for heat exchanging, by “flow a1” which has been expanded by the first decompressing device as a refrigerant, the remaining flow (“flow a2”) of “flow a” after excluding “flow a1” that has been branched and thus cooling the same; and a second decompressing device for expanding “flow a2” which has been cooled by the third heat exchanger.

    BOIL-OFF GAS RE-LIQUEFYING DEVICE AND METHOD FOR SHIP
    7.
    发明申请
    BOIL-OFF GAS RE-LIQUEFYING DEVICE AND METHOD FOR SHIP 有权

    公开(公告)号：US20210061434A1

    公开(公告)日：2021-03-04

    申请号：US17084359

    申请日：2020-10-29

    申请人： DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.

    发明人： Hyun Jun SHIN ,  Su Kyung AN ,  Seung Chul LEE

    IPC分类号： B63J2/14 ,  B63B25/16 ,  F17C6/00 ,  F17C9/02 ,  F17C9/04 ,  F02M21/02

    摘要： Disclosed is a re-liquefying device using a boil-off gas as a cooling fluid so as to re-liquefy the boil-off gas generated from a liquefied gas storage tank provided in a ship. A boil-off gas re-liquefying device for a ship comprises: a multi-stage compression unit for compressing boil-off gas generated from a liquefied gas storage tank; a heat exchanger in which the boil-off gas generated from the storage tank and the boil-off gas compressed exchange heat; a vaporizer for heat exchanging the boil-off gas cooled by the heat exchanger and a separate liquefied gas supplied to a fuel demand source of a ship, and thus cooling the boil-off gas; an intermediate cooler for cooling the boil-off gas that has been cooled by the heat exchanger; and an expansion means for branching a part of the boil-off gas, which is supplied to the intermediate cooler, and expanding the same.

    ELECTRIC FLUID PUMPING SYSTEM
    9.
    发明申请
    ELECTRIC FLUID PUMPING SYSTEM 审中-公开

    公开(公告)号：US20200256327A1

    公开(公告)日：2020-08-13

    申请号：US16788050

    申请日：2020-02-11

    申请人： Applied Cryo Technologies, Inc.

    发明人： Adam G. Van de Mortel ,  Randy L. Black ,  Jack A. Smith

    IPC分类号： F04B17/03 ,  F04B15/08 ,  F17C9/04

    摘要： A fluid pumping system may include an engine, an electric generator, an electrically driven pump, and a first electrical resistance heating element. The engine may drive the generator, and the generator may supply power to the electrically driven pump and the electrical resistance heating element. The first electrical resistance heating element may be positioned to apply heat to fluid pumped by the electrically driven pump.

    Method of purging a dual purpose LNG/LIN storage tank
    10.
    发明授权
    Method of purging a dual purpose LNG/LIN storage tank 有权

    公开(公告)号：US10663115B2

    公开(公告)日：2020-05-26

    申请号：US15873624

    申请日：2018-01-17

    申请人： Robert D. Kaminsky ,  Fritz Pierre, Jr.

    发明人： Robert D. Kaminsky ,  Fritz Pierre, Jr.

    IPC分类号： F17C5/02 ,  F17C7/02 ,  F17C9/02 ,  F17C9/04

    摘要： A method for loading liquefied nitrogen (LIN) into a cryogenic storage tank initially containing liquid natural gas (LNG) and a vapor space above the LNG. First and second nitrogen gas streams are provided. The first nitrogen stream has a lower temperature than the second nitrogen gas stream. While the LNG is offloaded from the storage tank, the first nitrogen gas stream is injected into the vapor space. The storage tank is then purged by injecting the second nitrogen gas stream into the storage tank to thereby reduce a natural gas content of the vapor space to less than 5 mol %. After purging the storage tank, the storage tank is loaded with LIN.