Reinforced thermal energy storage pressure vessel for an adiabatic compressed air energy storage system
A technology for thermal energy storage and pressure vessels, applied in pressure vessels, regenerative heat exchangers, gas/liquid distribution and storage, etc., can solve the problems of reducing the feasibility, high cost, and low efficiency of ACAES systems
Active Publication Date: 2012-07-25
GENERAL ELECTRIC CO
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Problems solved by technology
However, the construction of such thick concrete walls leads to considerable construction difficulty and high cost, thereby reducing the feasibility of implementing ACAES systems, as opposed to less efficient heat transfer CAES systems
Method used
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[0021] According to an embodiment of the present invention, there is provided a system comprising a TES unit having at least one reinforcing structure attached thereto to allow the TES unit to withstand high pressure and temperature fluctuations.
[0022] First, refer to figure 1 , showing a schematic arrangement of the main elements of a conventional ACAES system. ACAES system 100 includes an electric motor 102 coupled to a low pressure compressor 104 . The electric motor 102 may be driven electrically via conventional means, ie, the utility grid, during off-peak utility hours. Alternatively, electric motor 102 may be driven by electricity provided via a wind farm, solar array, or other renewable source. Electric motor 102 drives low pressure compressor 104 such that low pressure compressor 104 pressurizes intake air 106 . Pressurized air 108 from low pressure compressor 104 is then provided to high pressure compressor 112 to enable the air to undergo further compression. ...
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A thermal energy storage system comprises a pressure vessel configured to withstand a first pressure, wherein the pressure vessel has a wall comprising an outer surface and an inner surface surrounding an interior volume of the pressure vessel. The interior volume of the pressure vessel has a first end in fluid communication with one or more compressors and one or more turbines, and a second end in fluid communication with at least one compressed air storage component. A thermal storage medium is positioned in the interior volume, and at least one reinforcement structure is affixed to the outer surface of the wall, wherein the at least one reinforcement structure configured to reinforce the wall to withstand a second pressure greater than the first pressure.
Description
technical field [0001] Embodiments of the present invention relate generally to compressed air energy storage (CAES) systems, and more particularly to thermal energy storage (TES) pressure vessels in adiabatic CAES systems. Background technique [0002] CAES systems allow electricity to be generated without generating large emissions and / or consuming large amounts of natural resources. CAES systems typically include a compression train with one or more compressors. One or more compressors compress intake air in a compression stage for storage in caverns, porous rock formations, abandoned gas / oil fields, or other compressed air storage structures. The compressed air is then later used to drive a turbine to generate electricity in the energy generation phase, which in turn can be supplied to the utility grid. Typically, the compression chain operates during off-peak hours of the utility plant if utility energy is used to drive the compression chain during the compression pha...
Claims
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IPC IPC(8): F02C1/00F02C7/10F17C1/00F28D17/02
CPCF02C7/10F17C2223/035F17C2227/0157F17C2203/0678F17C2203/012Y02E60/15F17C2270/0155F02C1/005F28D17/02F17C2221/031F17C1/007F17C2223/0123F02C6/16F17C2201/0104Y10T29/49632Y10T29/4935Y10T29/49357Y02E60/16
Inventor S·W·弗罗伊恩德M·芬肯拉思C·博特罗C·S·k·贝罗尼M·A·冈萨雷斯萨拉扎S·M·霍夫曼
Owner GENERAL ELECTRIC CO