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    TURBINES AND ASSOCIATED COMPONENTS, SYSTEMS AND METHODS
    43.
    发明申请
    TURBINES AND ASSOCIATED COMPONENTS, SYSTEMS AND METHODS 有权

    公开(公告)号：US20220341328A1

    公开(公告)日：2022-10-27

    申请号：US17744923

    申请日：2022-05-16

    Applicant: Gradiant Corporation

    Inventor： Prakash Narayan Govindan ,  Maximus G. St. John ,  Swati Maini

    IPC: F01D5/14

    Abstract: Turbines and associated components, systems, and methods are described. In some embodiments, the turbine blades and turbines are configured to convert kinetic energy present in fluid (e.g., water) to other forms of energy (e.g., in a hydrokinetic energy system in a river or ocean) relatively efficiently and/or at relatively low cut-in speeds. The turbine blades may have a shape and/or include structural features that contribute at least in part to relatively high efficiency and/or relatively low cut-in speeds. In some embodiments, the turbine blades have a geometry similar to the geometry of a maple seed.

    TURBINES AND ASSOCIATED COMPONENTS, SYSTEMS AND METHODS
    44.
    发明申请
    TURBINES AND ASSOCIATED COMPONENTS, SYSTEMS AND METHODS 有权

    公开(公告)号：US20210363887A1

    公开(公告)日：2021-11-25

    申请号：US17394730

    申请日：2021-08-05

    Applicant: Gradiant Corporation

    Inventor： Prakash Narayan Govindan ,  Maximus G. St. John ,  Swati Maini

    IPC: F01D5/14

    Abstract: Turbines and associated components, systems, and methods are described. In some embodiments, the turbine blades and turbines are configured to convert kinetic energy present in fluid (e.g., water) to other forms of energy (e.g., in a hydrokinetic energy system in a river or ocean) relatively efficiently and/or at relatively low cut-in speeds. The turbine blades may have a shape and/or include structural features that contribute at least in part to relatively high efficiency and/or relatively low cut-in speeds. In some embodiments, the turbine blades have a geometry similar to the geometry of a maple seed.

    Production of ultra-high-density brines using transiently-operated desalination systems
    45.
    发明授权
    Production of ultra-high-density brines using transiently-operated desalination systems 有权

    公开(公告)号：US11084736B2

    公开(公告)日：2021-08-10

    申请号：US16596975

    申请日：2019-10-09

    Applicant: Gradiant Corporation

    Inventor： Prakash Narayan Govindan ,  Maximus G. St. John ,  Steven Lam ,  Mark Zaloudek ,  Karim M. Chehayeb ,  Samar Shah

    IPC: C02F1/10 ,  C02F1/08 ,  C02F5/02 ,  C02F1/66 ,  B01D3/34 ,  B01D17/02 ,  C02F1/52 ,  B01D3/16 ,  C02F103/08 ,  C02F103/10 ,  C02F101/10 ,  C02F101/32 ,  C02F101/12 ,  C02F1/00

    Abstract: Systems and methods related to desalination systems are described herein. According to some embodiments, the desalination systems are transiently operated and/or configured to facilitate transient operation. In some embodiments, a liquid stream comprising water and at least one dissolved salt is circulated through a fluidic circuit comprising a desalination system. In some embodiments, a portion of the desalination system (e.g., a humidifier) is configured to remove at least a portion of the water from the liquid stream to produce a concentrated brine stream enriched in the dissolved salt. In certain cases, the concentrated brine stream is recirculated through the fluidic circuit until the concentrated brine stream reaches a relatively high density (e.g., at least about 10 pounds per gallon) and/or a relatively high salinity (e.g., a total dissolved salt concentration of at least about 25 wt %). In certain embodiments, additional salt is added to the concentrated brine stream to produce an ultra-high-density brine stream (e.g., a brine stream having a density of at least about 11.7 pounds per gallon). Some aspects relate to a system that is configured to promote energy efficiency by recovering heat from the recirculated concentrated brine stream upon discharge from the fluidic circuit.

    Hybrid desalination systems and associated methods
    47.
    发明授权
    Hybrid desalination systems and associated methods 有权

    公开(公告)号：US10689264B2

    公开(公告)日：2020-06-23

    申请号：US16078704

    申请日：2017-02-22

    Applicant: Gradiant Corporation

    Inventor： Maximus G. St. John ,  Steven Lam ,  Prakash Narayan Govindan

    IPC: C02F1/10 ,  B01D3/34 ,  B01D5/00 ,  C02F1/04 ,  B01D3/00 ,  B01D3/14 ,  B01D1/14 ,  C02F103/08 ,  C02F103/18 ,  C02F103/30 ,  C02F103/06 ,  B01D1/28 ,  C02F103/28 ,  C02F103/10

    Abstract: Systems and methods related to desalination systems are described herein. According to some embodiments, the desalination systems are hybrid systems comprising one or more first desalination units and one or more second desalination units. In some embodiments, the one or more second desalination units, which may form a fluidic circuit that is located downstream from the one or more first desalination units, may be configured to desalinate higher salinity liquid streams than the one or more first desalination units. In certain embodiments, the one or more first desalination units are operated under steady-state conditions and/or configured to operate under steady-state conditions. In certain embodiments, the one or more second desalination units are transiently operated and/or configured to facilitate transient operation. In some embodiments, a liquid stream comprising water and at least one dissolved salt is flowed through the one or more first desalination units, which are configured to remove at least a portion of the water from the liquid stream to form a first concentrated brine stream enriched in the dissolved salt. In some embodiments, at least a portion of the first concentrated brine stream is fed to a fluidic circuit comprising the one or more second desalination units. In some embodiments, the one or more second desalination units are configured to remove at least a portion of the water from the first concentrated brine stream to produce a second concentrated brine stream further enriched in the dissolved salt. In certain cases, the second concentrated brine stream is recirculated through at least a portion of the fluidic circuit until the second concentrated brine stream reaches a relatively high density (e.g., at least about 10 pounds per gallon) and/or a relatively high salinity (e.g., a total dissolved salt concentration of at least about 25 wt %).

    OSMOTIC DESALINATION METHODS AND ASSOCIATED SYSTEMS
    48.
    发明申请
    OSMOTIC DESALINATION METHODS AND ASSOCIATED SYSTEMS 审中-公开

    公开(公告)号：US20200147554A1

    公开(公告)日：2020-05-14

    申请号：US16681533

    申请日：2019-11-12

    Applicant: Gradiant Corporation

    Inventor： Looh Tchuin Choong ,  Prakash Narayan Govindan ,  Maximus G. St. John ,  Steven Lam ,  Jonn-Ross Andrews ,  Karim M. Chehayeb

    IPC: B01D61/58 ,  C02F1/44 ,  B01D61/02 ,  B01D61/00

    Abstract: Provided herein are osmotic desalination methods and associated systems. According to certain embodiments, multiple osmotic membranes may be used to perform a series of osmosis steps, such that an output stream having a relatively high water purity—compared to a water purity of an aqueous feed stream—is produced. In some embodiments, multiple draw streams can be used to produce aqueous product streams having sequentially higher purities of water. Certain embodiments are related to osmotic desalination systems and methods in which forward osmosis is used to produce a first product stream having a relatively high water purity relative to an aqueous feed stream, and reverse osmosis is used to perform a second step (and/or additional steps) on the first product stream. In some embodiments, multiple reverse osmosis steps can be used in series to perform a net desalination process.

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