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236 条记录 (耗时 0.038 秒)

    VORTEX TUBE INCLUDING SECONDARY INLET WITH SWIRL GENERATOR
    1.
    发明公开
    VORTEX TUBE INCLUDING SECONDARY INLET WITH SWIRL GENERATOR 审中-公开

    公开(公告)号：US20240353153A1

    公开(公告)日：2024-10-24

    申请号：US18569170

    申请日：2021-06-15

    申请人： Khalifa University of Science and Technology

    发明人： Yacine Addad ,  Omar Sharief Ibrahim Alyahia

    IPC分类号： F25B9/04

    CPC分类号： F25B9/04

    摘要： Vortex Tubes and related methods of separating an airflow into a hot airflow and a cold airflow employ a secondary airflow inlet. A Vortex Tube includes a secondary airflow inlet that injects a swirling airflow aligned with a central region of the lumen of a circulating tube. The secondary airflow inlet includes a swirl generator that generates the vorticity of the swirling airflow. The injected swirling airflow increase the inner vortex strength thereby increasing the temperature difference between the hot airflow and the cold airflow.

    Downhole core plug apparatuses and related methods
    2.
    发明授权
    Downhole core plug apparatuses and related methods 有权

    公开(公告)号：US12098625B2

    公开(公告)日：2024-09-24

    申请号：US17640900

    申请日：2020-09-03

    申请人： Khalifa University of Science and Technology ,  Abu Dhabi National Oil Company

    发明人： James McElhinney ,  Ayesha Almarzooqi ,  Jorge Salgado Gomes

    IPC分类号： E21B43/12 ,  E21B23/03 ,  E21B49/08

    CPC分类号： E21B43/122 ,  E21B23/03 ,  E21B49/08

    摘要： Embodiments include a core plug holding apparatus including a tubular member configured to be inserted into a side pocket of a mandrel, the tubular member having an uphole end, a downhole end, and a core plug section located between the uphole end and the downhole end, wherein the core plug section is used for housing of one or more core plug samples and wherein tubular member includes one or more orifices formed in the core plug section. Embodiments include a method of sampling a well including deploying one or more core plug holding apparatuses into one or more side pocket mandrels of a completion; holding the one or more core plug holding apparatuses in the one or more side pocket mandrels for an incubation period; and retrieving the one or more core plug holding apparatuses from the one or more side pocket mandrels after the passage of the incubation period.

    METHODS AND SYSTEMS FOR VALIDATING LOCATIONS
    7.
    发明公开
    METHODS AND SYSTEMS FOR VALIDATING LOCATIONS 审中-公开

    公开(公告)号：US20240118369A1

    公开(公告)日：2024-04-11

    申请号：US18256247

    申请日：2020-12-07

    申请人： KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  BRITISH TELECOMMUNICATIONS PLC ,  EMIRATES TELECOMMUNICATIONS CORPORATION

    发明人： James AWEYA ,  Nawaf ALMOOSA

    IPC分类号： G01S5/02

    CPC分类号： G01S5/0242 ,  G01S5/0278

    摘要： This invention relates to methods and systems for determining whether a reference point in a location system has changed used measurement residuals determined from an exchange of messages between reference points. In one embodiment a method of determining whether the location of a first one of a plurality of reference points used in a location system has changed is provided. The reference points each have a known initial position and the method includes the steps of: sending a wireless message between a second reference point and the first reference point and recording the times of sending and receipt of the wireless message; estimating, from the recorded times, an estimated distance between the first reference point and the second reference point; comparing the estimated distance to the actual distance between the known initial positions of the first and second reference points to determine a measurement residual; and determining, using the measurement residual, whether the location of the first reference point has changed.

    BUS INERTIA FOR ENHANCING DYNAMIC FLEXIBILITY OF HYBRID POWER SYSTEMS
    8.
    发明公开
    BUS INERTIA FOR ENHANCING DYNAMIC FLEXIBILITY OF HYBRID POWER SYSTEMS 审中-公开

    公开(公告)号：US20240072570A1

    公开(公告)日：2024-02-29

    申请号：US18455296

    申请日：2023-08-24

    申请人： Khalifa University of Science and Technology

    发明人： Mohamed Shawky EL MOURSI ,  Sudipta GHOSH

    IPC分类号： H02J13/00 ,  H02J3/38

    CPC分类号： H02J13/00002 ,  H02J3/381 ,  H02J2203/20 ,  H02J2300/20

    摘要： The integration of renewable energy resources and employment of multi-terminal dc links have dramatically transformed the structure of traditional power systems into hybrid networks with reduced inertia levels. A novel approach is proposed for determining bus inertia that captures power system dynamics and facilitates the real-time computation of grid flexibility. The bus inertia is defined as the distribution of the total inertia across all of the system buses, located in different geographical regions. The computation of bus inertia can use augmented admittance matrix, bus voltages, line parameters, inertia constants, and internal voltage setpoints of synchronous machines. The determination of bus inertia can be used during planning and operation phases that span long and short-time horizons to enhance system flexibility.