COMPRESSED GAS STORAGE AND RECOVERY SYSTEM AND METHOD OF OPERATION SYSTEMS
    11.
    发明公开
    COMPRESSED GAS STORAGE AND RECOVERY SYSTEM AND METHOD OF OPERATION SYSTEMS 审中-公开
    高压气体储存和回收系统及其操作方法系统

    公开(公告)号:EP2663758A1

    公开(公告)日:2013-11-20

    申请号:EP12701594.9

    申请日:2012-01-13

    CPC classification number: F02C6/16 H02J15/006 Y02E60/15

    Abstract: Systems, devices and methods for the compression, expansion, and/or storage of a gas are described herein. An apparatus suitable for use in a compressed gas-based energy storage and recovery system includes a pneumatic cylinder having a working piston disposed therein for reciprocating movement in the pneumatic cylinder, a hydraulic actuator coupled to the working piston, and a hydraulic controller fluidically coupleable to the hydraulic actuator. The apparatus is fluidically coupleable to a compressed gas storage chamber which includes a first storage chamber fluidically coupleable to the pneumatic chamber, and a second storage chamber is fluidically coupleable to the first storage chamber. The first storage chamber is disposed at a first elevation and is configured to contain a liquid and a gas. The second storage chamber is disposed at a second elevation greater than the first elevation, and is configured to contain a volume of liquid.

    SYSTEM AND METHODS FOR OPTIMIZING EFFICIENCY OF A HYDRAULICALLY ACTUATED SYSTEM
    12.
    发明公开
    SYSTEM AND METHODS FOR OPTIMIZING EFFICIENCY OF A HYDRAULICALLY ACTUATED SYSTEM 审中-公开
    系统和用于优化运营的液压系统效率

    公开(公告)号:EP2516874A1

    公开(公告)日:2012-10-31

    申请号:EP10840163.9

    申请日:2010-12-23

    CPC classification number: F02C6/16 Y02E60/15 Y02T50/671

    Abstract: Systems and methods for efficiently operating a hydraulically actuated device/system are described herein. For example, systems and methods for efficiently operating a gas compression and expansion energy storage system are disclosed herein. Systems and methods are provided for controlling and operating the hydraulic actuators used within a hydraulically actuated device/system, such as, for example, a gas compression and/or expansion energy system, within a desired efficiency range of the hydraulic pump(s)/motor(s) used to supply or receive pressurized hydraulic fluid to or from the hydraulic actuators. In such a system, a variety of different operating regimes can be used depending on the desired output gas pressure and the desired stored pressure of the compressed gas. Hydraulic cylinders used to drive working pistons within the system can be selectively actuated to achieve varying force outputs to incrementally increase the gas pressure within the system for a given cycle.

    COMPRESSOR AND/OR EXPANDER DEVICE WITH ROLLING PISTON SEAL
    13.
    发明公开
    COMPRESSOR AND/OR EXPANDER DEVICE WITH ROLLING PISTON SEAL 审中-公开
    压缩机和/或膨胀具有滚动活塞密封件

    公开(公告)号:EP2649326A1

    公开(公告)日:2013-10-16

    申请号:EP11808406.0

    申请日:2011-12-06

    Abstract: An apparatus can include a piston movably disposed within a pressure vessel and defines a first interior region and a second interior region. The piston has a first position in which the first interior contains a gas having a first pressure and has a volume greater than the second interior region, and a second position in which the second interior region contains a gas having a second pressure and has a volume greater than the first interior region. A seal member is attached to the piston and to the pressure vessel. The seal member has a first configuration in which at least a portion of the seal member is disposed at a first position when the piston is in its first position, and a second configuration in which the portion of the seal member is disposed at a second position when the piston is in its second position.

    METHODS AND DEVICES FOR OPTIMIZING HEAT TRANSFER WITHIN A COMPRESSION AND/OR EXPANSION DEVICE
    15.
    发明公开
    METHODS AND DEVICES FOR OPTIMIZING HEAT TRANSFER WITHIN A COMPRESSION AND/OR EXPANSION DEVICE 审中-公开
    方法和设备OPTMIERTE传热内压缩和/或扩展设备

    公开(公告)号:EP2516952A2

    公开(公告)日:2012-10-31

    申请号:EP10840167.0

    申请日:2010-12-23

    CPC classification number: F02C6/16 Y02E60/15 Y02T50/671

    Abstract: Systems, methods and devices for optimizing heat transfer within a device or system used to compress and/or expand a gas, such as air, are described herein. For example, systems, methods and devices for optimizing the heat transfer within an air compression and expansion energy storage system are described herein. A compressor and/or expander device can include one or more of various embodiments of a heat transfer element that can be disposed within an interior of a cylinder or pressure vessel used in the compression and/or expansion of a gas, such as air. Such devices can include hydraulic and/or pneumatic actuators to move a fluid (e.g., liquid or gas) within the cylinder or pressure vessel. The heat transfer element can be used to remove heat energy generated during a compression and/or expansion process.

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